# LLM Model Intelligence

Compare AI model prices, context and capabilities, estimate costs, and check open-model licenses and activity.

## How to pay

Machine-payable over x402. USDC on: Base (eip155:8453), Solana (solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp), Polygon (eip155:137), Arbitrum One (eip155:42161).
No accounts. No API keys. No signup. The paying wallet is the account.

## Machine-readable

- OpenAPI: https://llm-models.x402tookit.com/openapi.json
- x402 manifest: https://llm-models.x402tookit.com/.well-known/x402
- Catalog (free): https://llm-models.x402tookit.com/catalog
- Health (free): https://llm-models.x402tookit.com/health
- Uptime (free): https://llm-models.x402tookit.com/uptime

## Endpoints (8)

### GET /hf-license-check — $0.02
Can you use this Hugging Face model commercially? License class, the reason, and what to read before you ship.
Params: id: string
Example: https://llm-models.x402tookit.com/hf-license-check?id=Qwen%2FQwen2.5-7B-Instruct

### GET /hf-model — $0.02
Hugging Face model check: downloads, likes, license class, parameter count, gating and last update, with a verdict.
Params: id: string
Example: https://llm-models.x402tookit.com/hf-model?id=Qwen%2FQwen2.5-7B-Instruct

### GET /hf-trending — $0.02
Trending or most-downloaded open models on Hugging Face, optionally for one task such as text-generation.
Params: task?: string, sort?: string, n?: integer
Example: https://llm-models.x402tookit.com/hf-trending?task=text-generation&sort=trending&n=10

### GET /llm-compare — $0.02
Compare up to 4 AI models side by side: price per million tokens, context, tools, reasoning, inputs, who is cheapest.
Params: ids: string
Example: https://llm-models.x402tookit.com/llm-compare?ids=stepfun%2Fstep-5-preview%2Copenai%2Fgpt-4o-mini

### GET /llm-cost — $0.02
Estimate AI model cost for a workload: per call and per month from token counts, plus the cheapest alternative.
Params: model: string, input_tokens: integer, output_tokens: integer, calls_per_day?: integer
Example: https://llm-models.x402tookit.com/llm-cost?model=stepfun%2Fstep-5-preview&input_tokens=2000&output_tokens=500&calls_per_day=1000

### GET /llm-find — $0.02
Find the cheapest AI models that meet your needs: minimum context, tool calling, image input, price ceiling.
Params: min_context?: integer, tools?: string, image_input?: string, max_output_price_per_m?: number, include_free?: string, n?: integer
Example: https://llm-models.x402tookit.com/llm-find?min_context=128000&tools=true&max_output_price_per_m=5&n=8

### GET /llm-model — $0.02
Spec sheet for one AI model: price, context, max output, supported features, inputs and age, with expiry warning.
Params: id: string
Example: https://llm-models.x402tookit.com/llm-model?id=stepfun%2Fstep-5-preview

### GET /llm-newest — $0.02
The newest AI models listed on OpenRouter in the last 1-90 days, with price, context and capabilities.
Params: days?: integer, n?: integer
Example: https://llm-models.x402tookit.com/llm-newest?days=30&n=10

## Terms

Model prices and capabilities come from OpenRouter's public model list and Hugging Face's public API, provided as is and changing frequently. License classes are simplified summaries, not legal advice; read the actual license before commercial use. Not affiliated with OpenRouter, Hugging Face or any model provider.