# GPT-6.1 Sol: near-Astra performance at one-fifth the API price



OpenAI



GPT-6.1 Sol targets agentic coding, computer use and professional work with near-Astra performance. Standard API pricing is $2 per million input tokens and $10 per million output tokens—one-fifth of Astra’s rates. Cached input is $0.10 per million tokens, a 95% discount. These rates apply to prompts up to 272K input tokens; longer context and other processing tiers cost more.


## Availability

Available through the API and in Work/Codex on Plus, Pro, Business, Enterprise and Edu. It is not yet in regular Chat. OpenCode can use it through OpenAI, subject to account access; this does not mean Go or Zen includes it. Sol Ultrafast is still upcoming.
- Model released: Sep 29, 2026 · Date only
- Review updated: Sep 30, 2026 09:19 Wed · Beijing Time (UTC+8)

## Sources

- GPT-6.1 Sol API model reference — evidence summary: https://developers.openai.com/api/docs/models/gpt-6.1-sol
- Introducing GPT-6.1 Sol — evidence summary: https://openai.com/index/introducing-gpt-6-1-sol/
- OpenCode OpenAI provider — evidence summary: https://opencode.ai/docs/providers/

Canonical entry: https://www.ailyre.com/source/?id=openai-gpt-6.1-sol&lang=en