OpenRouter
OpenRouter is an aggregator: a single key gives you access to hundreds of models (OpenAI, Anthropic, Meta, Google, Mistral, …) with transparent per-model pricing.
1. Create an OpenRouter account
Open the link below, then click Sign In → Sign Up.
2. Open API Keys
After login, go to the API Keys page in settings.
3. Create and copy the key
Click Create API Key, give it a name and optionally set a credit limit. The key is shown only once — copy it immediately!
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With a single OpenRouter key you can access hundreds of models. Transparent per-model pricing.