OpenRouter
One OpenAI-compatible API in front of hundreds of models, with routing, fallbacks and price transparency.

Best for
Developers who want to compare and switch models without signing up for a dozen provider accounts.
Why it deserves attention
OpenRouter exposes a single OpenAI-compatible endpoint that routes to models from Anthropic, OpenAI, Google, Meta, Mistral, DeepSeek and many more, including free community models. You can pin a provider, set fallbacks for when one is rate-limited, cap spending per key, and see per-model pricing and uptime before you commit. Usage shows up in one dashboard with per-key and per-model breakdowns, and the same API key works from scripts, IDEs and agent frameworks. It charges a small fee on purchased credits. The trade-off: an intermediary now sees your prompts, latency can vary by provider, and the catalogue changes quickly, so pin models in production.
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Can replace
- Together AI
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