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  1. GPT-5.6 TerraOpenAIRemove
gpt-5.6-terra
AttributeGPT-5.6 Terragpt-5.6-terra
Pricing
Input$2.00 / 1M
Output$12.00 / 1M
Cache Write (5m)$2.00 / 1M
Cache Write (1h)$2.00 / 1M
Cache Read$2.00 / 1M
Web Search$0 / 1M
Context
Max context1M
Max outputN/A
Capabilities
VisionYes
Function CallingYes
JSON ModeYes
StreamingYes
Catalogue
ProviderOpenAI
Categorychat
Charge typePay As You Go
Released
Description
SummaryGPT-5.6 Terra is the balanced model in OpenAI's GPT-5.6 series, positioned between the flagship Sol tier and the cost-efficient Luna tier. It is designed for everyday coding, reasoning, and agentic workflows, delivering strong performance while balancing capability and cost. Offering near-flagship quality at approximately half the cost of Sol, GPT-5.6 Terra is well suited for production applications that require reliable reasoning, software development, and scalable agent execution.