A agentindex
Comparison

Anthropic vs OpenRouter

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

Anthropic

The Claude model API.

  • + Top-tier coding and reasoning models
  • + Very large context windows
  • − Proprietary, usage-based pricing
  • − Claude-only

OpenRouter

One API routing to hundreds of models across providers.

  • + Single API key across most frontier and open models
  • + Automatic provider fallback and price/latency routing
  • − A middleman layer on top of underlying providers
  • − Per-token pricing varies by model
Spec Anthropic OpenRouter
Role LLM provider LLM provider
Tags llm-provider llm-provider
License Proprietary Proprietary
Open source No No
Self-hostable No No
MCP support No No
Pricing usage usage
Price Per-token Per-token
Usage cost Metered Metered
Models claude multi
Languages
GitHub stars — —
Last activity — —