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GPT-5 nano (medium)

OpenAI

ReasoningVision ModelProprietary

Analysis of OpenAI's GPT-5 nano (medium) 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
149 t/s
Input
Output
Reasoning tokens

Latency

TTFT
40.67 ms
500 token response
44.01 s

Benchmarks

Reasoning
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Math
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Coding
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MMLU Pro
77.2%
GPQA
67.0%
HLE
7.6%
SciCode
33.8%
AIME
78.3%
LiveCodeBench
76.3%

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