GPT-6.1 Sol
AvailableGPT-6.1 Sol is OpenAI's agentic-work model announced at DevDay 2026 and released 2026-09-29, an upgrade to GPT-6 Sol. API id gpt-6.1-sol; text and image input, text output. OpenAI reports it nearly matches GPT-6 Astra's intelligence on agentic coding, computer use, and professional work at about one-fifth of Astra's standard token prices. 1,050,000-token context window (maximum 922,000 input tokens) and 128,000 max output tokens; knowledge cutoff 30 April 2026. Pricing $2 / 1M input ($0.10 cached input, $2.50 cache writes), $10 / 1M output; prompts over 272K input tokens bill at 2x input/cache and 1.5x output for the full request. Available via the Claude/OpenAI API and in ChatGPT Work and Codex for Plus, Pro, Business, Enterprise, and Edu users; a GPT-6.1 Sol Ultrafast speed tier was announced as coming soon.
Specifications
- License
- Proprietary · Proprietary
- Weights
- Not released
- Architecture
- unknown
- Parameters
- Undisclosed
- Context window
- 1.1M tokens
- Max output
- 128K tokens
- Knowledge cutoff
- Apr 30, 2026
- Price (in / out, $/M)
- $2 / $10
- Modalities
- TextVisionCode
Benchmarks
No benchmark scores recorded yet. Spotted some? Submit a correction.
Vendor-reported figures are claims until independently verified. See methodology.