The hardest version of "we added more models" is the boring one: a marketplace adds providers because more is more. A control plane adds providers because each one earns its slot in the routing table by being measurably the right pick for some class of request. The first version is easy. The second is the only one worth shipping.
This week we shipped v1.7-A. Prism now routes across 23 models on 8 providers, all direct integrations, no marketplace markup. The seven incumbent models (Claude Opus/Sonnet/Haiku, GPT-4o/4o-mini, Gemini 2.5 Pro/Flash) are joined by 16 new models from five new providers: Groq, DeepSeek, Fireworks, Cerebras, and Mistral. Eight model architectures total — Claude, GPT, Gemini, Llama, Qwen, DeepSeek, Mistral, GLM, Kimi, GPT-OSS — span the catalog.
This is the post that explains why each one, and what changed in the auto-router because of it.
The wedge it sharpens
Prism's positioning is "the gateway that picks the model for you." Every other gateway makes the developer pick. We classify the request, look at the mode header (eco / balanced / sport), and route. That's been true since v1.0. What's been less true, until this week, is that we had enough models for the picking to be interesting.
