OpenAI Prices GPT-6.1 Sol at One Fifth of Astra, Matching Anthropic's Sonnet Rate

OpenAI used its DevDay keynote on Monday to reprice the middle of its model lineup. GPT-6.1 Sol is positioned as offering near-Astra intelligence for agentic coding, computer use and professional work, at one-fifth of GPT-6 Astra's standard input and output token prices. The published rates are $2 per million input tokens, $0.10 per million cached input tokens and $10 per million output tokens, with a 1,050,000-token context window and a maximum output of 128,000 tokens. The cached-input rate is half what GPT-6 Sol charged a week earlier.

The more important comparison is external. Anthropic released Claude Sonnet 5.5 the day before at the same $2 and $10 per million tokens, so the two most heavily used mid-tier coding models now carry identical list prices. VentureBeat also reports an ultrafast serving tier running at about 300 tokens per second, which is likely where competition will shift once the two vendors' prices converge.

"Near-Astra" is OpenAI's own characterization of the model. The company has not published a third-party replication, and independent reference points, such as agentic-coding and computer-use test suites run by outside evaluators, will take days to appear. The model is available now for Plus, Pro, Business, Enterprise and Edu users in ChatGPT Work and Codex, and in the API as gpt-6.1-sol, alongside more than twenty other DevDay announcements. OpenAI told the audience that ChatGPT now reaches 1.2 billion weekly users, a distribution base large enough that a list-price cut directly reduces gross margin rather than functioning mainly as a marketing move.