GPT-5.6 Sol
OpenAI · Frontier GPT-5.6 model for complex professional work, coding, and agentic workflows
Key facts
- Provider
- OpenAI
- Context window
- 1.1M tokens
- Max output
- 128K tokens
- Input price
- $4 / M tok
- Output price
- $20 / M tok
- Knowledge cutoff
- Feb 16, 2026
- Released
- Jul 9, 2026
- License
- —
Capabilities
ReasoningTool callingStructured outputFile attachmentsTemperature controlOpen weights
Reasoning options
- effort none · low · medium · high · xhigh · max
Pricing
USD per million tokens, list API rates.
- Input
- $4
- Output
- $20
- Cache read
- $0.4
- Cache write
- $5
Modalities
- Input
- Text, Image, Pdf
- Output
- Text