gpt-5.6-terra · OpenAI
GPT-5.6 Terra is designed for workloads that balance intelligence and cost. It roughly corresponds to the mini model tier used in earlier GPT-5 families.
GPT-5.6 Terra is designed for workloads that balance intelligence and cost. It roughly corresponds to the mini model tier used in earlier GPT-5 families.
GPT 5.6 Terra has a 1,050,000 token context window.
On AIHubMix, GPT 5.6 Terra costs $2 per million input tokens and $12 per million output tokens. Cached input reads are billed at $0.2 per million tokens.
GPT 5.6 Terra accepts text and image input.
GPT 5.6 Terra supports tool calling, thinking and structured outputs. Per-protocol parameter support is listed in the capability table on this page.
GPT 5.6 Terra is available through the AIHubMix unified API. The API is OpenAI-compatible: point your OpenAI SDK at https://aihubmix.com/v1, use your AIHubMix API key, and set the model name to gpt-5.6-terra — no other code changes needed.
GPT 5.6 Terra is developed by OpenAI. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
GPT 5.6 Terra was released on July 9, 2026 by OpenAI.
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Use GPT 5.6 Terra via the AIHubMix unified API — one interface for every major LLM.