OpenAI: GPT-5.6 Terra

openai/gpt-5.6-terra
Created Jul 9, 2026|1M context context|Starting at $2.5/M input tokens|Starting at $15/M output tokens

GPT-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 suited for everyday coding, reasoning, and agentic tasks where capability and cost need to be balanced.

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