ra-gpt-5.6-sol
ra-gpt-5.6-sol
OpenAI · chat · api
Context
1M
Max output
128K
Input $/1M
$5.00
Output $/1M
$30.00
Modalities
text
Released
29 Jul 2026
AI summary
● machine-written
OpenAI releases GPT-5.6 Sol with 1M-token context window
GPT-5.6 Sol is OpenAI's flagship model in the GPT-5.6 series, launched in July 2026. It is designed for complex reasoning, coding, and agentic workflows, with particular strength in command-line tasks, multi-step coding, and long-horizon problem solving. The model supports text-only modalities and is available via API with a 1-million-token context window and 128,000-token maximum output.
What's new
- 1M-token context window across GPT-5.6 family (Sol, Terra, Luna)
- Maximum output of 128,000 tokens
- Pricing: $5 per million input tokens, $30 per million output tokens
- General availability as of July 9, 2026
- Cached input tokens bill at 10% of standard rates
Best for
Complex reasoning and multi-step coding tasksCommand-line and long-horizon problem solvingAgentic workflowsCode generation