llmfit

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Hundreds of models & providers. One command to find what runs on your hardware.

A terminal tool that right-sizes LLM models to your system's RAM, CPU, and GPU. Detects your hardware, scores each model across quality, speed, fit, and context dimensions, and tells you which ones will actually run well on your machine.

Ships with an interactive TUI (default) and a classic CLI mode. Supports multi-GPU setups, MoE architectures, dynamic quantization selection, speed estimation, and local runtime providers (Ollama, llama.cpp, MLX, Docker Model Runner, LM Studio).

New: Download Manager (D), Advanced Configuration (A), and Hardware Simulation — Press D to manage downloads, view history, delete models, and configure the download directory. Press A to tune TPS efficiency, run mode factors, and scoring weights. Press S to simulate different hardware.

Sister projects:

• sympozium — managing agents in Kubernetes.
• llmserve — a simple TUI for serving local LLM models. Pick a model, pick a backend, serve it.
• llama-panel — a native macOS app for managing local llama-server instances.

---

Install

Windows

scoop install llmfit

If Scoop is not installed, follow the Scoop installation guide.

macOS / Linux

Homebrew

brew install llmfit

MacPorts

port install llmfit

Quick install

curl -fsSL https://llmfit.axjns.dev/install.sh | sh

Downloads the latest release binary from GitHub and installs it to /usr/local/bin (or ~/.local/bin if no sudo).

Install to ~/.local/bin without sudo:

curl -fsSL https://llmfit.axjns.dev/install.sh | sh -s -- --local

Docker / Podman

docker run ghcr.io/alexsjones/llmfit

This prints JSON from llmfit recommend command. The JSON could be further queried with jq.

podman run ghcr.io/alexsjones/llmfit recommend --use-case coding | jq '.models[].name'

From source

git clone https://github.com/AlexsJones/llmfit.git
cd llmfit
cargo build --release
# binary is at target/release/llmfit

---

Usage

TUI (default)

llmfit

Launches the interactive terminal UI. Your system specs (CPU, RAM, GPU name, VRAM, backend) are shown at the top. Models are listed in a scrollable table sorted by composite score. Each row shows the model's score, estimated tok/s, best quantization for your hardware, run mode, memory usage, and use-case category.

Key	Action
Up / Down or j / k	Navigate models
/	Enter search mode (partial match on name, provider, params, use case)
Esc or Enter	Exit search mode
Ctrl-U	Clear search
f	Cycle fit filter: All, Runnable, Perfect, Good, Marginal
a	Cycle availability filter: All, GGUF Avail, Installed
s	Cycle sort column: Score, Params, Mem%, Ctx, Date, Use Case
v	Enter Visual mode (select multiple models)
V	Enter Select mode (column-based filtering)
t	Cycle color theme (saved automatically)
p	Open Plan mode for selected model (hardware planning)
P	Open provider filter popup
U	Open use-case filter popup
C	Open capability filter popup
L	Open license filter popup
R	Open runtime/backend filter popup (llama.cpp, MLX, vLLM)
S	Open hardware simulation popup (override RAM/VRAM/CPU)
A	Open advanced configuration popup (tune efficiency, run mode factors)
h	Open help popup (all key bindings)
m	Mark selected model for compare
c	Open compare view (marked vs selected)
x	Clear compare mark
i	Toggle installed-first sorting (any detected runtime provider)
d	Download selected model (provider picker when multiple are available)
D	Open Download Manager (history, deletion, config)
r	Refresh installed models from runtime providers
Enter	Toggle detail view for selected model
PgUp / PgDn	Scroll by 10
g / G	Jump to top / bottom
q	Quit

Vim-like modes

The TUI uses Vim-inspired modes shown in the bottom-left status bar. The current mode determines which keys are active.

Normal mode

The default mode. Navigate, search, filter, and open views. All keys in the table above apply here.

Visual mode (v)

Select a contiguous range of models for bulk comparison. Press v to anchor at the current row, then navigate with j/k or arrow keys to extend the selection. Selected rows are highlighted.

Key	Action
j / k or arrows	Extend selection up/down
c	Compare all selected models (opens multi-compare view)
m	Mark current model for two-model compare
Esc or v	Exit Visual mode

The multi-compare view displays a table where rows are attributes (Score, tok/s, Fit, Mem%, Params, Mode, Context, Quant, etc.) and columns are models. Best values are highlighted. Use h/l or arrow keys to scroll horizontally if more models are selected than fit on screen.

Select mode (V)

Column-based actions. Press V (shift-v) to enter Select mode, then use h/l or arrow keys to move between column headers. The active column is visually highlighted. Press Enter or Space to trigger that column's current action.

Column	Filter action
Inst	Cycle availability filter
Model	Enter search mode
Provider	Open provider popup
Params	Open parameter-size bucket popup (<3B, 3-7B, 7-14B, 14-30B, 30-70B, 70B+)
Score, tok/s, Mem%, Ctx, Date	Sort by that column
Quant	Open quantization popup
Mode	Open run-mode popup (GPU, MoE, CPU+GPU, CPU)
Fit	Cycle fit filter
Use Case	Open use-case popup

Row navigation still works in Select mode so you can see the effect of actions as you apply them: j/k, arrow keys, Ctrl-U, Ctrl-D, PageUp, PageDown, Home, and End. Press Esc to return to Normal mode.

TUI Plan mode (p)

Plan mode inverts normal fit analysis: instead of asking "what fits my hardware?", it estimates "what hardware is needed for this model config?".

Use p on a selected row, then:

Key	Action
Tab / j / k	Move between editable fields (Context, Quant, Target TPS)
Left / Right	Move cursor in current field
Type	Edit current field
Backspace / Delete	Remove characters
Ctrl-U	Clear current field
Esc or q	Exit Plan mode

Plan mode shows estimates for:

• minimum and recommended VRAM/RAM/CPU cores
• feasible run paths (GPU, CPU offload, CPU-only)
• upgrade deltas to reach better fit targets

Hardware Simulation (S)

Press S to open the hardware simulation popup. Override RAM, VRAM, and CPU core count to see which models would fit on different target hardware. All model scores, fit levels, and speed estimates are recalculated instantly against the simulated specs.

Key	Action
Tab / j / k	Switch between RAM, VRAM, CPU fields
Type digits	Edit the selected field
Enter	Apply simulation
Ctrl-R	Reset to real detected hardware
Esc	Cancel and close

When simulation is active, a SIM badge appears in the system bar and status bar. The entire model table reflects the simulated hardware until you reset.

Advanced Configuration (A)

Press A to open the Advanced Configuration popup. This panel lets you tune the parameters behind TPS estimation, run mode penalties, and composite scoring — addressing issue #449 where tok/s was overestimated for certain models (e.g., Qwen3 30B).

All changes are applied immediately and the model table is recalculated. Close with Esc to accept or Ctrl-R to reset to defaults.

Field	Description	Default
Efficiency	Global efficiency factor for bandwidth-based TPS. Accounts for overhead	0.55
GPU factor	Speed multiplier for pure GPU inference	1.0
CPU Offload	Speed multiplier when weights spill to system RAM	0.5
MoE Offload	Speed multiplier for Mixture-of-Experts expert switching	0.8
Tensor Par	Speed multiplier for tensor-parallel inference	0.9
CPU Only	Speed multiplier for CPU-only execution	0.3
Context cap	Max context length used for memory estimation (leave blank for default)	auto

Key	Action
Tab / j / k	Switch between fields
Type digits / .	Edit the selected field
Left / Right	Move cursor within the field
Backspace / Delete	Remove characters
Ctrl-U	Clear the current field
Enter	Apply changes and recalculate all scores
Esc / q	Close without applying

Download Manager (D)

Press D to open the Download Manager view. This full-screen view replaces the main model table and provides three sections:

• Active Download — shows the current download in progress with a progress bar, model name, and status message.
• Config — displays (and allows editing) the GGUF models directory. The configured path persists across sessions.
• History — a navigable list of past downloads (newest first) with model name, provider, status, and date. Failed downloads can be removed from history, and successful downloads can be deleted from the provider.

Use Tab / Shift-Tab to cycle focus between sections.

Key	Action
Tab / Shift-Tab	Cycle focus: Active → Config → History
j / k or arrows	Navigate the history list (when History focused)
x	Delete selected model (prompts for confirmation)
y / n	Confirm or cancel deletion
e	Edit download directory (when Config focused)
Enter	Confirm directory edit
Esc / D / q	Close and return to the model table

For failed downloads (e.g. 404 errors), x removes the entry from history. For successful downloads, it deletes the model from the provider (supported for Ollama and llama.cpp).

Themes

Press t to cycle through 10 built-in color themes. Your selection is saved automatically to ~/.config/llmfit/theme and restored on next launch.

Theme	Description
Default	Original llmfit colors
Dracula	Dark purple background with pastel accents
Solarized	Ethan Schoonover's Solarized Dark palette
Nord	Arctic, cool blue-gray tones
Monokai	Monokai Pro warm syntax colors
Gruvbox	Retro groove palette with warm earth tones
Catppuccin Latte	🌻 Light theme — harmonious pastel inversion
Catppuccin Frappé	🪴 Low-contrast dark — muted, subdued aesthetic
Catppuccin Macchiato	🌺 Medium-contrast dark — gentle, soothing tones
Catppuccin Mocha	🌿 Darkest variant — cozy with color-rich accents

Web dashboard

When you run llmfit in non-JSON mode, it automatically starts a background web dashboard on 0.0.0.0:8787. Open it in any browser on the same network:

http://<your-machine-ip>:8787

Override the host or port with environment variables:

LLMFIT_DASHBOARD_HOST=0.0.0.0 LLMFIT_DASHBOARD_PORT=9000 llmfit

Variable	Default	Description
LLMFIT_DASHBOARD_HOST	0.0.0.0	Interface to bind the dashboard server
LLMFIT_DASHBOARD_PORT	8787	Port to bind the dashboard server

To disable the auto-started dashboard, pass --no-dashboard:

llmfit --no-dashboard

CLI mode

Use --cli or any subcommand to get classic table output:

# Table of all models ranked by fit
llmfit --cli

# Only perfectly fitting models, top 5
llmfit fit --perfect -n 5

# Show detected system specs
llmfit system

# List all models in the database
llmfit list

# Search by name, provider, or size
llmfit search "llama 8b"

# Detailed view of a single model
llmfit info "Mistral-7B"

# Top 5 recommendations (JSON, for agent/script consumption)
llmfit recommend --json --limit 5

# Recommendations filtered by use case
llmfit recommend --json --use-case coding --limit 3

# Force a specific runtime (bypass automatic MLX selection on Apple Silicon)
llmfit recommend --force-runtime llamacpp
llmfit recommend --force-runtime llamacpp --use-case coding --limit 3

# Plan required hardware for a specific model configuration
llmfit plan "Qwen/Qwen3-4B-MLX-4bit" --context 8192
llmfit plan "Qwen/Qwen3-4B-MLX-4bit" --context 8192 --quant mlx-4bit
llmfit plan "Qwen/Qwen3-4B-MLX-4bit" --context 8192 --target-tps 25 --json

# Run as a node-level REST API (for cluster schedulers / aggregators)
llmfit serve --host 0.0.0.0 --port 8787

REST API (llmfit serve)

llmfit serve starts an HTTP API that exposes the same fit/scoring data used by TUI/CLI, including filtering and top-model selection for a node.

# Liveness
curl http://localhost:8787/health

# Node hardware info
curl http://localhost:8787/api/v1/system

# Full fit list with filters
curl "http://localhost:8787/api/v1/models?min_fit=marginal&runtime=llamacpp&sort=score&limit=20"

# Key scheduling endpoint: top runnable models for this node
curl "http://localhost:8787/api/v1/models/top?limit=5&min_fit=good&use_case=coding"

# Search by model name/provider text
curl "http://localhost:8787/api/v1/models/Mistral?runtime=any"

Supported query params for models/models/top:

• limit (or n): max number of rows returned
• perfect: true|false (forces perfect-only when true)
• min_fit: perfect|good|marginal|too_tight
• runtime: any|mlx|llamacpp
• use_case: general|coding|reasoning|chat|multimodal|embedding
• provider: provider text filter (substring)
• search: free-text filter across name/provider/size/use-case
• sort: score|tps|params|mem|ctx|date|use_case
• include_too_tight: include non-runnable rows (default false on /top, true on /models)
• max_context: per-request context cap for memory estimation
• force_runtime: mlx|llamacpp|vllm — override automatic runtime selection during analysis

Validate API behavior locally:

# spawn server automatically and run endpoint/schema/filter assertions
python3 scripts/test_api.py --spawn

# or test an already-running server
python3 scripts/test_api.py --base-url http://127.0.0.1:8787

Hardware overrides

Hardware autodetection can fail on some systems (e.g. broken nvidia-smi, VMs, passthrough setups), or you may want to evaluate model fit against different target hardware. Use --memory, --ram, and --cpu-cores to override detected values:

# Override GPU VRAM
llmfit --memory=32G

# Override system RAM
llmfit --ram=128G

# Override CPU core count
llmfit --cpu-cores=16

# Combine overrides to simulate target hardware
llmfit --memory=24G --ram=64G --cpu-cores=8 fit
llmfit --memory=24G --ram=64G system --json

# Works with all modes: TUI, CLI, and subcommands
llmfit --memory=24G --cli
llmfit --memory=24G fit --perfect -n 5
llmfit --ram=64G recommend --json

Accepted suffixes for --memory and --ram: G/GB/GiB (gigabytes), M/MB/MiB (megabytes), T/TB/TiB (terabytes). Case-insensitive. If no GPU was detected, --memory creates a synthetic GPU entry so models are scored for GPU inference. On unified-memory systems (Apple Silicon), --ram also updates VRAM; use --memory to override VRAM independently.

Context-length cap for estimation

Use --max-context to cap context length used for memory estimation (without changing each model's advertised maximum context):

# Estimate memory fit at 4K context
llmfit --max-context 4096 --cli

# Works with subcommands
llmfit --max-context 8192 fit --perfect -n 5
llmfit --max-context 16384 recommend --json --limit 5

If --max-context is not set, llmfit will use OLLAMA_CONTEXT_LENGTH when available.

JSON output

Add --json to any subcommand for machine-readable output:

llmfit --json system     # Hardware specs as JSON
llmfit --json fit -n 10  # Top 10 fits as JSON
llmfit recommend --json  # Top 5 recommendations (JSON is default for recommend)
llmfit plan "Qwen/Qwen2.5-Coder-0.5B-Instruct" --context 8192 --json

plan JSON includes stable fields for:

• request (context, quantization, target_tps)
• estimated minimum/recommended hardware
• per-path feasibility (gpu, cpu_offload, cpu_only)
• upgrade deltas

---

How it works

1. Hardware detection -- Reads total/available RAM via sysinfo, counts CPU cores, and probes for GPUs:

   • NVIDIA -- Multi-GPU support via nvidia-smi. Aggregates VRAM across all detected GPUs. Falls back to VRAM estimation from GPU model name if reporting fails.
   • AMD -- Detected via rocm-smi.
   • Intel Arc -- Discrete VRAM via sysfs, integrated via lspci.
   • Apple Silicon -- Unified memory via system_profiler. VRAM = system RAM.
   • Ascend -- Detected via npu-smi.
   • Backend detection -- Automatically identifies the acceleration backend (CUDA, Metal, ROCm, SYCL, CPU ARM, CPU x86, Ascend) for speed estimation.

2. Model database -- Hundreds models sourced from the HuggingFace API, stored in data/hf_models.json and embedded at compile time. Memory requirements are computed from parameter counts across a quantization hierarchy (Q8_0 through Q2_K). VRAM is the primary constraint for GPU inference; system RAM is the fallback for CPU-only execution.

   MoE support -- Models with Mixture-of-Experts architectures (Mixtral, DeepSeek-V2/V3) are detected automatically. Only a subset of experts is active per token, so the effective VRAM requirement is much lower than total parameter count suggests. For example, Mixtral 8x7B has 46.7B total parameters but only activates ~12.9B per token, reducing VRAM from 23.9 GB to ~6.6 GB with expert offloading.

3. Dynamic quantization -- Instead of assuming a fixed quantization, llmfit tries the best quality quantization that fits your hardware. It walks a hierarchy from Q8_0 (best quality) down to Q2_K (most compressed), picking the highest quality that fits in available memory. If nothing fits at full context, it tries again at half context.

4. Multi-dimensional scoring -- Each model is scored across four dimensions (0–100 each):

   Dimension	What it measures
   Quality	Parameter count, model family reputation, quantization penalty, task alignment
   Speed	Estimated tokens/sec based on backend, params, and quantization
   Fit	Memory utilization efficiency (sweet spot: 50–80% of available memory)
   Context	Context window capability vs target for the use case

   Dimensions are combined into a weighted composite score. Weights vary by use-case category (General, Coding, Reasoning, Chat, Multimodal, Embedding). For example, Chat weights Speed higher (0.35) while Reasoning weights Quality higher (0.55). Models are ranked by composite score, with unrunnable models (Too Tight) always at the bottom.

5. Speed estimation -- Token generation in LLM inference is memory-bandwidth-bound: each token requires reading the full model weights once from VRAM. When the GPU model is recognized, llmfit uses its actual memory bandwidth to estimate throughput:

   Formula: (bandwidth_GB_s / model_size_GB) × efficiency_factor

   The efficiency factor (0.55) and per-mode speed multipliers are tunable via the Advanced Configuration popup (A in the TUI). The defaults account for kernel overhead, KV-cache reads, and memory controller effects. This approach is validated against published benchmarks from llama.cpp (Apple Silicon, NVIDIA T4) and real-world measurements.

   The bandwidth lookup table covers ~80 GPUs across NVIDIA (consumer + datacenter), AMD (RDNA + CDNA), and Apple Silicon families.

   For unrecognized GPUs, llmfit falls back to per-backend speed constants:

   Backend	Speed constant
   CUDA	220
   Metal	160
   ROCm	180
   SYCL	100
   CPU (ARM)	90
   CPU (x86)	70
   NPU (Ascend)	390

   Fallback formula: K / params_b × quant_speed_multiplier, with per-mode penalties tunable via the Advanced Configuration popup (A in the TUI).

6. Fit analysis -- Each model is evaluated for memory compatibility:

   Run modes:

   • GPU -- Model fits in VRAM. Fast inference.
   • MoE -- Mixture-of-Experts with expert offloading. Active experts in VRAM, inactive in RAM.
   • CPU+GPU -- VRAM insufficient, spills to system RAM with partial GPU offload.
   • CPU -- No GPU. Model loaded entirely into system RAM.

   Fit levels:

   • Perfect -- Recommended memory met on GPU. Requires GPU acceleration.
   • Good -- Fits with headroom. Best achievable for MoE offload or CPU+GPU.
   • Marginal -- Tight fit, or CPU-only (CPU-only always caps here).
   • Too Tight -- Not enough VRAM or system RAM anywhere.

---

Model database

The model list is generated by scripts/scrape_hf_models.py, a standalone Python script (stdlib only, no pip dependencies) that queries the HuggingFace REST API. Hundreds models & providers including Meta Llama, Mistral, Qwen, Google Gemma, Microsoft Phi, DeepSeek, IBM Granite, Allen Institute OLMo, xAI Grok, Cohere, BigCode, 01.ai, Upstage, TII Falcon, HuggingFace, Zhipu GLM, Moonshot Kimi, Baidu ERNIE, and more. The scraper automatically detects MoE architectures via model config (num_local_experts, num_experts_per_tok) and known architecture mappings.

Model categories span general purpose, coding (CodeLlama, StarCoder2, WizardCoder, Qwen2.5-Coder, Qwen3-Coder), reasoning (DeepSeek-R1, Orca-2), multimodal/vision (Llama 3.2 Vision, Llama 4 Scout/Maverick, Qwen2.5-VL), chat, enterprise (IBM Granite), and embedding (nomic-embed, bge).

See MODELS.md for the full list.

The model database is embedded at compile time, so end users get updates by upgrading llmfit itself (brew upgrade llmfit, scoop update llmfit, or downloading a newer release). The commands below are for contributors refreshing the database from source:

To refresh the model database:

# Automated update (recommended)
make update-models

# Or run the script directly
./scripts/update_models.sh

# Or manually
python3 scripts/scrape_hf_models.py
cargo build --release

The scraper writes data/hf_models.json, which is baked into the binary via include_str!. The automated update script backs up existing data, validates JSON output, and rebuilds the binary.

By default, the scraper enriches models with known GGUF download sources from providers like unsloth and bartowski. Results are cached in data/gguf_sources_cache.json (7-day TTL) to avoid repeated API calls. Use --no-gguf-sources to skip enrichment for a faster scrape.

---

Project structure

src/
  main.rs         -- CLI argument parsing, entrypoint, TUI launch
  hardware.rs     -- System RAM/CPU/GPU detection (multi-GPU, backend identification)
  models.rs       -- Model database, quantization hierarchy, dynamic quant selection
  fit.rs          -- Multi-dimensional scoring (Q/S/F/C), speed estimation, MoE offloading
  providers.rs    -- Runtime provider integration (Ollama, llama.cpp, MLX, Docker Model Runner, LM Studio), install detection, pull/download
  display.rs      -- Classic CLI table rendering + JSON output
  tui_app.rs      -- TUI application state, filters, navigation
  tui_ui.rs       -- TUI rendering (ratatui)
  tui_events.rs   -- TUI keyboard event handling (crossterm)
data/
  hf_models.json  -- Model database (206 models)
skills/
  llmfit-advisor/ -- OpenClaw skill for hardware-aware model recommendations
scripts/
  scrape_hf_models.py        -- HuggingFace API scraper
  update_models.sh            -- Automated database update script
  install-openclaw-skill.sh   -- Install the OpenClaw skill
Makefile           -- Build and maintenance commands

---

Publishing to crates.io

The Cargo.toml already includes the required metadata (description, license, repository). To publish:

# Dry run first to catch issues
cargo publish --dry-run

# Publish for real (requires a crates.io API token)
cargo login
cargo publish

Before publishing, make sure:

• The version in Cargo.toml is correct (bump with each release).
• A LICENSE file exists in the repo root. Create one if missing:

# For MIT license:
curl -sL https://opensource.org/license/MIT -o LICENSE
# Or write your own. The Cargo.toml declares license = "MIT".

• data/hf_models.json is committed. It is embedded at compile time and must be present in the published crate.
• The exclude list in Cargo.toml keeps target/, scripts/, and demo.gif out of the published crate to keep the download small.

To publish updates:

# Bump version
# Edit Cargo.toml: version = "0.2.0"
cargo publish

---

Dependencies

Crate	Purpose
clap	CLI argument parsing with derive macros
sysinfo	Cross-platform RAM and CPU detection
serde / serde_json	JSON deserialization for model database
tabled	CLI table formatting
colored	CLI colored output
ureq	HTTP client for runtime/provider API integration
ratatui	Terminal UI framework
crossterm	Terminal input/output backend for ratatui

---

Runtime provider integration

llmfit supports multiple local runtime providers:

• Ollama (daemon/API based pulls)
• llama.cpp (direct GGUF downloads from Hugging Face + local cache detection)
• MLX (Apple Silicon / mlx-community model cache + optional server) — MLX downloads map to mlx-community/* repos on HuggingFace, not the original model publisher
• Docker Model Runner (Docker Desktop's built-in model serving)
• LM Studio (local model server with REST API for model management + downloads)

When more than one compatible provider is available for a model, pressing d in the TUI opens a provider picker modal.

Ollama integration

llmfit integrates with Ollama to detect which models you already have installed and to download new ones directly from the TUI.

Requirements

• Ollama must be installed and running (ollama serve or the Ollama desktop app)
• llmfit connects to http://localhost:11434 (Ollama's default API port)
• No configuration needed — if Ollama is running, llmfit detects it automatically

Remote Ollama instances

To connect to Ollama running on a different machine or port, set the OLLAMA_HOST environment variable:

# Connect to Ollama on a specific IP and port
OLLAMA_HOST="http://192.168.1.100:11434" llmfit

# Connect via hostname  
OLLAMA_HOST="http://ollama-server:666" llmfit

# Works with all TUI and CLI commands
OLLAMA_HOST="http://192.168.1.100:11434" llmfit --cli
OLLAMA_HOST="http://192.168.1.100:11434" llmfit fit --perfect -n 5

This is useful for:

• Running llmfit on one machine while Ollama serves from another (e.g., GPU server + laptop client)
• Connecting to Ollama running in Docker containers with custom ports
• Using Ollama behind reverse proxies or load balancers

How it works

On startup, llmfit queries GET /api/tags to list your installed Ollama models. Each installed model gets a green ✓ in the Inst column of the TUI. The system bar shows Ollama: ✓ (N installed).

When you press d on a model, llmfit sends POST /api/pull to Ollama to download it. The row highlights with an animated progress indicator showing download progress in real-time. Once complete, the model is immediately available for use with Ollama.

If Ollama is not running, Ollama-specific operations are skipped; the TUI still supports other providers like llama.cpp where available.

llama.cpp integration

llmfit integrates with llama.cpp as a runtime/download provider in both TUI and CLI.

Requirements:

• llama-cli or llama-server available in PATH (for runtime detection)
• network access to Hugging Face for GGUF downloads

How it works:

• llmfit maps HF models to known GGUF repos (with heuristic fallbacks)
• downloads GGUF files into the local llama.cpp model cache
• marks models installed when matching GGUF files are present locally

Environment variables

Variable	Default	Description
LLAMA_CPP_PATH	(none)	Directory containing llama.cpp binaries (llama-cli, llama-server). Checked before PATH lookup.
LLAMA_SERVER_PORT	8080	Port used when probing a running llama-server health endpoint for runtime detection.

If llama.cpp is installed in a non-standard location, set LLAMA_CPP_PATH so llmfit can find it without requiring it in your PATH.

Docker Model Runner integration

llmfit integrates with Docker Model Runner, Docker Desktop's built-in model serving feature.

Requirements:

• Docker Desktop with Model Runner enabled
• Default endpoint: http://localhost:12434

How it works:

• llmfit queries GET /engines to list models available in Docker Model Runner
• models are matched to the HF database using Ollama-style tag mapping (Docker Model Runner uses ai/<tag> naming)
• pressing d in the TUI pulls via docker model pull

Remote Docker Model Runner instances

To connect to Docker Model Runner on a different host or port, set the DOCKER_MODEL_RUNNER_HOST environment variable:

DOCKER_MODEL_RUNNER_HOST="http://192.168.1.100:12434" llmfit

LM Studio integration

llmfit integrates with LM Studio as a local model server with built-in model download capabilities.

Requirements:

• LM Studio must be running with its local server enabled
• Default endpoint: http://127.0.0.1:1234

How it works:

• llmfit queries GET /v1/models to list models available in LM Studio
• pressing d in the TUI triggers a download via POST /api/v1/models/download
• download progress is tracked by polling GET /api/v1/models/download-status
• LM Studio accepts HuggingFace model names directly, so no name mapping is needed

Remote LM Studio instances

To connect to LM Studio on a different host or port, set the LMSTUDIO_HOST environment variable:

LMSTUDIO_HOST="http://192.168.1.100:1234" llmfit

Model name mapping

llmfit's database uses HuggingFace model names (e.g. Qwen/Qwen2.5-Coder-14B-Instruct) while Ollama uses its own naming scheme (e.g. qwen2.5-coder:14b). llmfit maintains an accurate mapping table between the two so that install detection and pulls resolve to the correct model. Each mapping is exact — qwen2.5-coder:14b maps to the Coder model, not the base qwen2.5:14b.

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Platform support

• Linux -- Full support. GPU detection via nvidia-smi (NVIDIA), rocm-smi (AMD), sysfs/lspci (Intel Arc) and npu-smi (Ascend).
• macOS (Apple Silicon) -- Full support. Detects unified memory via system_profiler. VRAM = system RAM (shared pool). Models run via Metal GPU acceleration.
• macOS (Intel) -- RAM and CPU detection works. Discrete GPU detection if nvidia-smi available.
• Windows -- RAM and CPU detection works. NVIDIA GPU detection via nvidia-smi if installed.
• Android / Termux / PRoot -- CPU and RAM detection usually work, but GPU autodetection is not currently supported. Mobile GPUs such as Adreno typically are not visible through the desktop/server probing interfaces llmfit uses.

GPU support

Vendor	Detection method	VRAM reporting
NVIDIA	nvidia-smi	Exact dedicated VRAM
AMD	rocm-smi	Detected (VRAM may be unknown)
Intel Arc (discrete)	sysfs (mem_info_vram_total)	Exact dedicated VRAM
Intel Arc (integrated)	lspci	Shared system memory
Apple Silicon	system_profiler	Unified memory (= system RAM)
Ascend	npu-smi	Detected (VRAM may be unknown)

If autodetection fails or reports incorrect values, use --memory, --ram, or --cpu-cores to override (see Hardware overrides above).

Android / Termux note

On Android setups such as Termux + PRoot, llmfit usually cannot see mobile GPUs through the standard Linux detection paths (nvidia-smi, rocm-smi, DRM/sysfs, lspci, etc.). In those environments, "no GPU detected" is expected with the current implementation.

If you still want GPU-style recommendations on a unified-memory phone or tablet, use a manual memory override:

llmfit --memory=8G fit -n 20
llmfit recommend --json --memory=8G --limit 10

This is a workaround for recommendation/scoring only; it does not provide true Android GPU runtime detection.

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Contributing

Contributions are welcome, especially new models.

Before submitting a PR

Please run cargo fmt before pushing your changes. Most CI check failures are caused by unformatted code:

cargo fmt

Adding a model

1. Add the model's HuggingFace repo ID (e.g., meta-llama/Llama-3.1-8B) to the TARGET_MODELS list in scripts/scrape_hf_models.py.
2. If the model is gated (requires HuggingFace authentication to access metadata), add a fallback entry to the FALLBACKS list in the same script with the parameter count and context length.
3. Run the automated update script:

   make update-models
   # or: ./scripts/update_models.sh
   

4. Verify the updated model list: ./target/release/llmfit list
5. Update MODELS.md by running: python3 << 'EOF' < scripts/... (see commit history for the generator script)
6. Open a pull request.

See MODELS.md for the current list and AGENTS.md for architecture details.

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OpenClaw integration

llmfit ships as an OpenClaw skill that lets the agent recommend hardware-appropriate local models and auto-configure Ollama/vLLM/LM Studio providers.

Install the skill

# From the llmfit repo
./scripts/install-openclaw-skill.sh

# Or manually
cp -r skills/llmfit-advisor ~/.openclaw/skills/

Once installed, ask your OpenClaw agent things like:

• "What local models can I run?"
• "Recommend a coding model for my hardware"
• "Set up Ollama with the best models for my GPU"

The agent will call llmfit recommend --json under the hood, interpret the results, and offer to configure your openclaw.json with optimal model choices.

How it works

The skill teaches the OpenClaw agent to:

1. Detect your hardware via llmfit --json system
2. Get ranked recommendations via llmfit recommend --json
3. Map HuggingFace model names to Ollama/vLLM/LM Studio tags
4. Configure models.providers.ollama.models in openclaw.json

See skills/llmfit-advisor/SKILL.md for the full skill definition.

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Alternatives

If you're looking for a different approach, check out llm-checker -- a Node.js CLI tool with Ollama integration that can pull and benchmark models directly. It takes a more hands-on approach by actually running models on your hardware via Ollama, rather than estimating from specs. Good if you already have Ollama installed and want to test real-world performance. Note that it doesn't support MoE (Mixture-of-Experts) architectures -- all models are treated as dense, so memory estimates for models like Mixtral or DeepSeek-V3 will reflect total parameter count rather than the smaller active subset.

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License

MIT