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OpenAI: GPT-5.2 Chat Context Window

GPT-5.2 Chat has a context window of 128K tokens. Its context score is 44.

Data sourced from OpenRouter API and manual data collection | Last updated: Nov 3, 2026, 8:01 AM UTC

Context
128K
Context score
44

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Frequently asked questions

How large is the GPT-5.2 Chat context window?

GPT-5.2 Chat has a context window of 128K tokens. Its context score is 44.