OpenRouter
One API for many LLMs
Multi-model API access through one key, with fallback routing across providers. Swap models by changing a string, set a fallback so one provider's outage doesn't take your feature down, and compare cost and quality before committing to one in production.
Best for
- Multi-model API access
- Model fallback routing
- One key, many providers
- Cost comparison across models
How builders use it
- →Point the app at one API key and swap models by changing a string instead of rewriting a provider SDK.
- →Set a fallback model so one provider's outage does not take your whole feature down with it.
- →Use it to compare cost and quality across models before you commit to one provider in production.
Related tools
Copy-paste skills
Prompt chains you can drop into OpenRouter. Browse the library — we don't split skills by tool yet.
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