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GPT-5.2 (xhigh)

OpenAI

Frontier ModelReasoningVision ModelProprietary

Analysis of OpenAI's GPT-5.2 (xhigh) and comparison to other AI models across key metrics including quality, price, performance (tokens per second & time to first token), context window & more.

Context

Release Date
Dec 11, 2025
Knowledge Cutoff
Aug 31, 2025
Window
400k

PricingPer 1M tokens

Input
$1.75
Output
$14
Blended 3:1
$4.8125

Capabilities

Speed
78 t/s
Input
Output
Reasoning tokens

Latency

TTFT
122.61 ms
500 token response
129.05 s

Benchmarks

Reasoning
●●●○○
Math
●●●●●
Coding
●●○○○
MMLU Pro
87.4%
GPQA
90.3%
HLE
35.4%
SciCode
52.1%
AIME
99.0%
LiveCodeBench
88.9%

Analysis of OpenAI's GPT-5.2 (xhigh) and comparison to other AI models across key metrics including quality, price, performance (tokens per second & time to first token), context window & more.