GPT-5.6 Terra
OpenAI · Balanced GPT-5.6 model for capable, cost-efficient everyday work
Key facts
- Provider
- OpenAI
- Context window
- 1.1M tokens
- Max output
- 128K tokens
- Input price
- $2 / M tok
- Output price
- $12 / 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
- $2
- Output
- $12
- Cache read
- $0.2
- Cache write
- $2.5
Modalities
- Input
- Text, Image, Pdf
- Output
- Text