Policy

Include a model id when all of the following hold:

1. It appears in the OpenRouter models API (resource above).[^openrouter-models]
2. pricing.prompt and pricing.completion are both numeric 0 (not missing).
3. It is chat-oriented — same idea as isChatModel() in the app: drop ids whose lowercase form contains non-chat patterns such as embed, tts, transcribe, realtime, moderation, ocr, guard, safety, reward, whisper, lyria, imagen, image, veo, and similar.

Prefer :free suffix ids and known routers such as openrouter/free.

Store ids lowercase. Free-ness applies only to the OpenRouter service instance, never as global model metadata.

Current set

Snapshot mirrored into FreeTierModels.openRouterFree (runtime). Replace this list only via the refresh playbook.

• cohere/north-mini-code:free
• google/gemma-4-26b-a4b-it:free
• google/gemma-4-31b-it:free
• inclusionai/ling-3.0-tiny:free
• nvidia/nemotron-3-nano-30b-a3b:free
• nvidia/nemotron-3-nano-omni-30b-a3b-reasoning:free
• nvidia/nemotron-3-super-120b-a12b:free
• nvidia/nemotron-3-ultra-550b-a55b:free
• nvidia/nemotron-3.5-lightning:free
• nvidia/nemotron-nano-12b-v2-vl:free
• nvidia/nemotron-nano-9b-v2:free
• openai/gpt-oss-20b:free
• openrouter/free
• poolside/laguna-s-2.1:free
• poolside/laguna-xs-2.1:free

Notes

• Runtime lookup is exact string match on the lowercase model id (no alias normalization for OpenRouter).
• When unsure, leave the id out (conservative).

[^openrouter-models]: OpenRouter models API