{"version":1,"type":"story","url":"https://digestai.news/story/openai-launches-gpt-6-1-sol-with-astra-level-coding-at-one-fifth-the-c","json":"https://digestai.news/story/openai-launches-gpt-6-1-sol-with-astra-level-coding-at-one-fifth-the-c.json","markdown":"https://digestai.news/story/openai-launches-gpt-6-1-sol-with-astra-level-coding-at-one-fifth-the-c.md","slug":"openai-launches-gpt-6-1-sol-with-astra-level-coding-at-one-fifth-the-c","headline":"OpenAI launches GPT-6.1 Sol with Astra-level coding at one-fifth the cost","summary":"OpenAI announced GPT-6.1 Sol on September 29, 2026, during its DevDay event. The model is an upgraded version of GPT-6 Sol, released about a week earlier, and OpenAI says it delivers performance approaching the flagship GPT-6 Astra at one-fifth the standard input/output token cost. In the DeepSWE v1.1 coding benchmark, GPT-6.1 Sol matched Astra's score while beating GPT-6 Sol by 6.4 points at lower cost. On OSWorld 2.0 computer-operation tests, it closed the gap with Astra to 2.1 points at maximum inference, with per-task cost roughly one-seventh of Astra's. In scientific research (Terminal-Bench Science 0.1), maximum-inference GPT-6.1 Sol scored more than double GPT-6 Sol, with an average task cost of $5.47 versus $23.21 for Claude Opus 5.5 and $23.80 for GPT-6 Astra. Hallucination rates on difficult prompts fell to 4.1% from GPT-6 Sol's 4.5%, nearing Astra's 4.0%. API pricing is $2 per million input tokens, $0.10 per million cached input tokens (a 95% discount), and $10 per million output tokens — the same as GPT-6 Sol. The model is available now for ChatGPT Plus, Pro, Business, Enterprise, and Edu users, and in ChatGPT Work and Codex via the API name 'gpt-6.1-sol'. OpenAI also introduced GPT-6.1 Sol Ultrafast, up to 8x faster, accessible through a new $500-per-month Pro tier.","keyPoints":["GPT-6.1 Sol matches GPT-6 Astra on DeepSWE coding at one-fifth the cost, OpenAI says","API pricing: $2 input, $0.10 cached input, $10 output per million tokens","Available now for Plus, Pro, Business, Enterprise, Edu, ChatGPT Work, and Codex"],"whyItMatters":"A near-frontier model at drastically lower cost makes long-running AI agents economically viable for coding, research, and computer operation at scale.","category":{"slug":"models","name":"Generative AI & Models","url":"https://digestai.news/category/models"},"entities":{"companies":["OpenAI"],"models":["GPT-6.1 Sol","GPT-6 Sol","GPT-6 Astra","GPT-6.1 Sol Ultrafast","GPT-6 Astra Ultrafast","Claude Opus 5.5"],"people":[]},"firstPublishedAt":"2026-10-12T20:00:00Z","updatedAt":"2026-10-12T20:00:00Z","sourceCount":1,"hasPrimarySource":false,"sources":[{"outlet":"note.com","title":"OpenAI Announces 'GPT-6.1 Sol': Performance Approaching Astra at One-Fifth the Cost","url":"https://note.com/sblog001/n/n68c969548b40?hl=en","publishedAt":"2026-10-12T20:00:00Z","type":"press","primary":false,"lead":true}],"sourceNotes":null,"discussions":[],"thread":{"title":"OpenAI's GPT-6 Expansion and Pricing Overhaul","url":"https://digestai.news/thread/comparing-openai-models-on-aws-for-workload-efficiency","storyCount":9},"cite":{"text":"Digest AI, \"OpenAI launches GPT-6.1 Sol with Astra-level coding at one-fifth the cost\", 12 October 2026, https://digestai.news/story/openai-launches-gpt-6-1-sol-with-astra-level-coding-at-one-fifth-the-c","publisher":"Digest AI","title":"OpenAI launches GPT-6.1 Sol with Astra-level coding at one-fifth the cost","datePublished":"2026-10-12T20:00:00Z","url":"https://digestai.news/story/openai-launches-gpt-6-1-sol-with-astra-level-coding-at-one-fifth-the-c"},"generatedBy":"Written by Digest AI's editorial model from the linked sources; the sources are the record.","license":"Headlines, digests and key points are written by Digest AI and may be quoted with a link to the story page. Linked articles belong to their publishers. Terms: https://digestai.news/terms#reuse"}