OpenAI announced GPT-6.1 Sol on September 29 as an upgrade to GPT-6 Sol. The company says the new generation approaches GPT-6 Astra on coding, computer use, and professional-work evaluations at a fraction of Astra’s standard token prices.
A new generation at a lower stated price
OpenAI reports that GPT-6.1 Sol improves on GPT-6 Sol across coding, document work, computer use, scientific workflows, and factuality. Its announcement lists API rates of $2 per million input tokens, $0.10 per million cached input tokens, and $10 per million output tokens. These capability and benchmark comparisons are OpenAI-reported results, not independent reproductions.
Availability is product-specific
OpenAI says GPT-6.1 Sol is available through the API as gpt-6.1-sol and is rolling out to eligible Plus, Pro, Business, Enterprise, and Edu users in ChatGPT Work and Codex. The company explicitly says it is not yet available in Chat. OpenAI also says an Ultrafast variant is coming in the following days.
This canonical article continues to use OpenAI’s original GPT-6 Sol and Luna family launch artwork as contextual family art; it is not a new GPT-6.1-specific image.