LLM APIs and model providers · ranked 03
OpenRouter
One API key for many models, including labs and open weights.
Best for Switching models without switching SDKs
OpenRouter is a unified API in front of many model providers. You use one key and switch model IDs. Use it when you do not want to bake a single lab into the product, or when you want to price-shop models without new accounts. You still pay usage. Rates: check site.
Best use cases
- Fallback across providers
- Trying several models on one key
- An OpenAI-compatible endpoint in an existing SDK
Pros
- + One account instead of five provider consoles
- + Model choice stays a config change
- + Useful as a hedge when a provider rate-limits you
Cons
- − A middleman means another status page and another markup
- − Per-model rates: check site
Pricing
Usage-based pass-through with OpenRouter's own pricing. Rates: check site.
Alternatives
LLM APIs and model providers
7.7
Groq
Fast inference API for open models.
Best for Low-latency calls to open models
LLM APIs and model providers
8.0
OpenAI API
The default model API. GPT models, tools, and a platform console.
Best for The model API most libraries already speak
LLM APIs and model providers
8.3
Anthropic API
Claude models via API. The pair to Claude Code.
Best for Calling Claude from your own product