by OpenAI
GPT-5.2 supports configurable reasoning effort only through the /responses endpoint. To make higher-intensity reasoning available directly via the /chat interface, GPT-5.2-High is provided as a reasoning-enhanced variant of GPT-5.2 with reasoning_effort preset to high. It is designed for tasks that require deeper analysis, stronger result consistency, and greater controllability. By applying more aggressive reasoning strategies and more effective use of extended context, the model delivers clearer and more reliable responses, making it well suited for complex agent workflows, long-chain decision-making, and reliability-critical advanced applications.
GPT-5.2 supports configurable reasoning effort only through the /responses endpoint. To make higher-intensity reasoning available directly via the /chat interface, GPT-5.2-High is provided as a reasoning-enhanced variant of GPT-5.2 with reasoning_effort preset to high. It is designed for tasks that require deeper analysis, stronger result consistency, and greater controllability. By applying more aggressive reasoning strategies and more effective use of extended context, the model delivers clearer and more reliable responses, making it well suited for complex agent workflows, long-chain decision-making, and reliability-critical advanced applications.
gpt-5.2-high has a 400,000 token context window.
On AIHubMix, gpt-5.2-high costs $1.75 per million input tokens and $14 per million output tokens. Cached input reads are billed at $0.18 per million tokens.
gpt-5.2-high accepts text and image input.
gpt-5.2-high supports thinking, function calling, web, structured outputs and tool calling. Per-protocol parameter support is listed in the capability table on this page.
gpt-5.2-high 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-5.2-high — no other code changes needed.
gpt-5.2-high is developed by OpenAI. AIHubMix aggregates it alongside models from other providers behind one API and one bill.
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Use gpt-5.2-high via the AIHubMix unified API — one interface for every major LLM.