OpenRouter Model Catalog

Overview

Query the GET /api/v1/models endpoint to browse 400+ models, filter by capabilities, compare pricing, and check provider endpoints. No API key required for the models endpoint.

Prerequisites

• curl and jq for the command-line catalog queries — GET /api/v1/models itself requires no auth
• An OpenRouter API key exported as OPENROUTER_API_KEY only for the Special Routers completion example — see the openrouter-install-auth skill for setup
• Python 3.8+ with requests for filtering, plus the OpenAI SDK for the openrouter/auto example (pip install requests openai)

Instructions

1. List the catalog per List All Models: curl -s https://openrouter.ai/api/v1/models | jq '.data | length'; add ?supported_parameters=tools to filter to tool-calling models.
2. Read Model Object Shape to interpret each entry — pricing.prompt/pricing.completion are per token (multiply by 1M for readable rates), plus context_length, top_provider.max_completion_tokens, and architecture.modality.
3. Filter programmatically per Python: Query and Filter — free models, tool-calling models, cheapest paid models sorted by prompt price, and 128K+ context models.
4. Compare per-provider pricing and quantization for a single model via GET /api/v1/models/{id}/endpoints per List Providers for a Model.
5. Pick behavior with a suffix per Model Variants (:free, :nitro, :floor, :extended, :thinking), or delegate selection entirely to openrouter/auto per Special Routers.
6. Sanity-check choices against the Popular Model Quick Reference, but always verify live pricing via /api/v1/models — prices change frequently.