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GPT-5.4 (xhigh)

OpenAI

Frontier ModelReasoningVision ModelProprietary

Analysis of OpenAI's GPT-5.4 (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
Mar 05, 2026
Knowledge Cutoff
Aug 31, 2025
Window
1.1M

PricingPer 1M tokens

Input
$2.5
Output
$15
Blended 3:1
$5.625

Capabilities

Speed
154 t/s
Input
Output
Reasoning tokens

Latency

TTFT
121.14 ms
500 token response
124.38 s

Benchmarks

Reasoning
●●●○○
Coding
●●●○○
GPQA
92.0%
HLE
41.6%
SciCode
56.6%

Analysis of OpenAI's GPT-5.4 (xhigh) and comparison to other AI models across key metrics including quality, price, performance (tokens per second & time to first token), context window & more.