OpenAI: gpt-5.2

gpt-5.2
400K context128K outReasoningToolsParallel toolsVisionFilesCacheStructuredStreamingSystem msg
Released Dec 10, 2025Knowledge cutoff 2025Updated Dec 10, 2025

GPT-5.2 is the latest frontier-grade model in the GPT-5 series, offering stronger agentic and long context perfomance compared to GPT-5.1. It uses adaptive reasoning to allocate computation dynamically, responding quickly to simple queries while spending more depth on complex tasks. Built for broad task coverage, GPT-5.2 delivers consistent gains across math, coding, sciende, and tool calling workloads, with more coherent long-form answers and improved tool-use reliability.

Mode chatTokenizer GPTReasoning levels none, low, medium, high, maxModerated

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Pricing

Input price
$1.05/ 1M tokens$1.7540% off
Output price
$8.40/ 1M tokens$14.0040% off
Context window 400K tokensCompatible endpoints anthropic, openai, openai-responseVendor OpenAI

Performance

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Usage & Ranking

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Supported parameters

All providers = every upstream serving this model supports it. Some providers = depends on which upstream handles the request. Default = the value sent when you leave the parameter unset.

ParameterProvidersDefault
frequency_penaltySome providersNot sent by default
include_reasoningAll providers-
max_completion_tokensSome providers-
max_tokensSome providers-
presence_penaltySome providersNot sent by default
reasoningAll providers-
repetition_penaltySome providersNot sent by default
response_formatAll providers-
seedAll providers-
structured_outputsAll providers-
temperatureSome providersNot sent by default
tool_choiceAll providers-
toolsAll providers-
top_kSome providersNot sent by default
top_pSome providersNot sent by default

Frequently asked questions

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