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OpenRouter Model Catalog Listing
OpenRouter Model Catalog Listing is a paid API for AI agents from openrouter.withzero.xyz, paid per call via MPP, price unknown, status unknown (last checked 2026-09-15, last successful call 2026-07-29).
Returns the list of all available AI models on OpenRouter with their IDs, names, context lengths, pricing, and architecture details
Price / call—
Success100%
StatusUnknown
How this service works
List all models available via OpenRouter with per-token pricing. Use this to discover model IDs and their costs before calling POST /api/v1/chat. 📖 Full guide: https://openrouter.withzero.xyz/llms.txt
Output
A JSON object with a 'data' array where each element describes one available model: its string ID and display name, numeric context_length, pricing object with prompt/completion/image/request rates as strings, optional description, and optional architecture object with modality, tokenizer, and instruct_type fields.
Example use cases
Find cheapest model for budget constraints
“I need to summarize a bunch of customer feedback today but my API budget is tight. Can you check what models are available through OpenRouter and tell me which ones are cheapest per token so I can pick the best deal?”
Compare context windows for long documents
“I'm working with some really long documents that might be 20k+ tokens. Can you show me which OpenRouter models have the biggest context windows so I know what I can actually process?”
Identify vision-capable models for images
“I want to start analyzing images in my workflow. Show me all the OpenRouter models that support vision or image inputs so I can see what's available before I start building.”
Technical details
Endpoint
GEThttps://openrouter.withzero.xyz/api/v1/modelsWhen to prefer
Use this endpoint before calling the chat completion endpoint to discover which model IDs are valid, understand their context limits, and compare per-token pricing. Prefer this over hardcoding model names since available models and prices may change. Ideal for cost-optimization workflows that need to select the cheapest suitable model dynamically.
Side effects
- Upstream OpenRouter API unavailable — returns 5xx error
- Network timeout if OpenRouter is slow to respond
- Empty data array if no models are currently listed
- Authentication or proxy misconfiguration returns 401/403
Output
Schema · Response
| Field | Type | Description |
|---|---|---|
| datarequired | array |
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