GPT-5.2-codex
gpt-5.2-codex
OpenAI · chat · api · seen 7m ago
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Context
400K
Max output
—
Input $/1M
$1.75
Output $/1M
$14.00
Modalities
text
Released
19 Dec 2025
AI summary
● machine-written
OpenAI releases GPT-5.2 Codex with 400K context window
GPT-5.2 Codex is a text-based chat model from OpenAI optimized for code generation tasks. Released January 14, 2026, it offers a 400K token context window and is available via API. The model achieves a 89.9 score on GPQA benchmarks.
What's new
- Context window of 400K tokens
- Input pricing at $1.75 per million tokens
- Output pricing at $14.00 per million tokens
- Output speed of 155 tok/s with 2.02s median TTFT
Best for
Code generationProfessional coding workAPI-based deployment