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GPT-5.2 Codex (xhigh)

New in 2026

Developed by OpenAI

API Pricing (per 1M tokens)

Input$1.75
Output$14.00

Intelligence Benchmarks

MMLU ProN/A
GPQA89.9%
Intelligence Index49.0
LivebenchN/A

Technical Specifications

Context Window400K Tokens
Vision SupportYes
Tokens per Second85
Time to First Token (s)30.08
Modalities
textimagefile->text