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GPT-5 nano (high)

OpenAI

ReasoningVision ModelProprietary

Analysis of OpenAI's GPT-5 nano (high) 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
Aug 07, 2025
Knowledge Cutoff
May 30, 2024
Window
400k

PricingPer 1M tokens

Input
$0.05
Output
$0.4
Blended 3:1
$0.1375

Capabilities

Speed
144 t/s
Input
Output
Reasoning tokens

Latency

TTFT
86.44 ms
500 token response
89.91 s

Benchmarks

Reasoning
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Math
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Coding
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MMLU Pro
78.0%
GPQA
67.6%
HLE
8.2%
SciCode
36.6%
AIME
83.7%
LiveCodeBench
78.9%

Analysis of OpenAI's GPT-5 nano (high) and comparison to other AI models across key metrics including quality, price, performance (tokens per second & time to first token), context window & more.