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GPT-5 Nano

Closed

GPT-5 nano is an AI model from OpenAI.

Publisher
OpenAI
Family
GPT
Context
400K
Input
Output
License
proprietary
Released
7 Aug 2025

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Notes

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Attribution

Benchmark scores
prime-hubfrontiermathAALiveBenchSWE-benchVals AI
Attribution policy →
Context
400K
Input
$0.05
/1M tok
Output
$0.40
/1M tok
Blended
$0.14
#188/ 414/1M · 3:1
Speed
158
#53/ 414tok/s
Cache read
$0.01
0.20x input

Price & speed via Artificial Analysis · ranked across tracked models · caching via OpenRouter

Reported on 47 evals across 11 domains - best 100.0% on Mostly Basic Python Problems (MBPP) · #1 of 15

Reported eval scores

47
Sudoku1.7
Game Of Life1.2
Gutenberg Env100
Math Python100
Math Python100
Medcasereasoning26.7
Blackjack Env0.2
NanochatAquaRat0
Mastermind1.4
Pii Masking0
Mastermind1.4
Vf Binary Liar20.4
Wiki Search82
Wiki Search82
Xbench Scienceqa40
Clockbench6.7
Fingpt Sentiment78.2
Trading Bot Bench29.7
Banking Mrm0.3
Vf Thick Fog-6.7
Ai2Arc0
LiveBench - Coding62.4
Terminal-Bench (Hard)6.8
LiveBench - Language46.8
IFBench32.5
LiveBench - Instruction Following55.7
LiveBench - Math68.4
LiveBench - Reasoning40.3
LiveBench - Data Analysis43.4
Mostly Basic Python Problems (MBPP)100
LiveCodeBench47
SWE-bench Verified34.8
SciCode29.1
GPQA Diamond42.8
FrontierMath8.3
LiveBench52.8
MMLU-Pro55.6
Humanity's Last Exam (HLE)4.1
DABstep10
τ²-bench (Tau²-bench)25.7
AIME 2025: Problems from the American Invitational Mathematics Examination27.3
ProofBench12
MedScribe72.9
MedCode30.4
TaxEval v267.4
MortgageTax53.6
SAGE30.4