OpenAI
GPT-5.6 Terra Pro
GPT-5.6 Terra Pro — GPT-5.6 Terra served with pro reasoning mode for higher-quality responses on complex tasks.
gpt-5.6-terra-proPricing
~40%- Input
- $1.197602 / 1,000,000 tokens
- Output
- $7.185612 / 1,000,000 tokens
- Cache read
- $0.11976 / 1,000,000 tokens
- Cache write
- $1.497003 / 1,000,000 tokens
Discount history
Model details
- Input
- text, image, file
- Output
- text
- Context window
- 1,050,000 tokens
- Maximum output
- 128,000 tokens
- Availability
- Uncapped capacity
- Updated
- 11/8/2026, 4:00:11 AM UTC
Capacity is reserved when your request is accepted.
Capabilities
ChatStreamingTool callingVisionReasoningFile inputWeb search
Supported parameters
include_reasoningmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetools