GPT-6.1 Sol: OpenAI brings GPT-6 Astra-level power at a lower price
Quick facts
- What happened
- At DevDay OpenAI introduced GPT-6.1 Sol, a model the company says nearly matches GPT-6 Astra on coding and professional work for a fifth of the price.
- What changes for you
- If you pay for ChatGPT Plus or higher, you can use it in ChatGPT Work and Codex. It isn’t available in regular chat yet, according to OpenAI.
- Who can try it today
- In ChatGPT on a Plus, Pro, Business, Enterprise or Edu plan, look for it in ChatGPT Work or Codex. Developers have it in the API as gpt-6.1-sol.
- Official source
- Introducing GPT-6.1 Sol (anuncio oficial)
- Verification date
- Related guide
- How to use ChatGPT: the complete guide (2026)
What it is
GPT-6.1 Sol is an upgrade to GPT-6 Sol that OpenAI introduced on 29 September 2026 at its DevDay event. According to the company, it nearly matches GPT-6 Astra—its most powerful model—on coding, computer use and professional work, with API prices that are one fifth of Astra’s.
Where it’s available
- ChatGPT: on Plus, Pro, Business, Enterprise and Edu plans in ChatGPT Work and Codex. OpenAI says it’s not yet in regular chat.
- API: as
gpt-6.1-sol. On 8 October OpenAI added an Ultrafast mode that speeds up text generation.
Why it matters
The trend repeats across all the big companies: near-frontier models at a much lower price. In the chat most people use, the Free and Go plans stay on GPT-6 Luna, as we covered in the GPT-6 radar entry.
Official links
Plain-language summary based on the official sources linked. Cognenza has no commercial relationship with the companies mentioned.