OpenRouter aggregates access to 200+ LLMs — GPT-4o, Claude 3.5, Gemini, Mistral, LLaMA, and many more — behind a single, OpenAI-compatible API endpoint with transparent, competitive pricing and automatic failover when a provider goes down. Developers use it to switch models with a one-line change, benchmark models against each other, or hedge against rate limits by routing traffic dynamically. It is the fastest way to experiment with new models without managing multiple API keys and SDK versions.

Pros

api
multi-model
llm

Considerations

—May require learning curve

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