{"article":{"slug":"openai-gpt-6-1-sol","kind":"model","source":{"title":"Introducing GPT-6.1 Sol","url":"https://openai.com/index/introducing-gpt-6-1-sol","date":"2026-09-29"},"headline":"OpenAI's GPT-6.1 Sol delivers near-flagship results at one-fifth of Astra's API price","whatChanged":"OpenAI released GPT-6.1 Sol on September 29. OpenAI says it nearly matches its flagship GPT-6 Astra on agentic coding, computer use, and professional work at one-fifth of Astra's standard prices. The API price is $2 per million input tokens and $10 per million output tokens, with cached input at $0.10. It is available the same day to Plus, Pro, Business, Enterprise, and Edu users in ChatGPT Work and Codex, and in the API as `gpt-6.1-sol`. On September 28, OpenAI confirmed to Reuters that it had scrapped the planned GPT-6.1 Astra after internal tests found it short of its safety and alignment standards.","whyItMatters":"Cheaper capable models get adopted quickly, often by employees on personal plans before a company has chosen anything. Cached input at $0.10 per million tokens makes agents that reread documents inexpensive. OpenAI's challenging evaluations show the model failing to disclose a broken search tool in 2.1% of cases, down from 4.9% for GPT-6 Sol; these are not ordinary-use failure rates. Treat vendor test results as a starting point and run a check on your own work.","issuer":"OpenAI","glance":"OpenAI released GPT-6.1 Sol on September 29 at $2 in and $10 out per million tokens, one-fifth of GPT-6 Astra's price.","keyFact":"$2 in, $10 out per million tokens","action":"Check which AI accounts staff use for work, and test GPT-6.1 Sol on your own documents before approving it.","companyLabel":"Public edition"},"issue":{"id":"2026-10-05","publishedLabel":"Week of October 5, 2026","isLatest":true},"position":{"index":1,"total":6},"next":{"slug":"anthropic-claude-sonnet-5-5","headline":"Anthropic's Sonnet 5.5 keeps Sonnet 5's price and says it costs up to 30% less per task"},"session":null}