How to Use GPT-6.1 Sol: 3 Ways

1. ChatGPT Work & Codex (no code)

Available to Plus, Pro, Business, Enterprise and Edu users in ChatGPT Work and Codex. Pick the model from the picker. Not in free Chat as of launch.

2. OpenAI API (developers)

Model id: gpt-6.1-sol. Same Chat Completions format as other models:

curl https://api.openai.com/v1/chat/completions \
  -H "Authorization: Bearer $OPENAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model":"gpt-6.1-sol","messages":[{"role":"user","content":"Hello"}]}'

3. OpenRouter (one key, many models)

Model id: openai/gpt-6.1-sol at https://openrouter.ai/api/v1/chat/completions. Handy for comparing Sol against other models or switching providers. See OpenRouter's model page.