GPT 5 Nano

Model

Release Date: Aug 7, 2025

Developer OpenAI 🇺🇸

Context Window 400k

Max Output Tokens 128k

Token Costs (in/out) $0.05/0.40

Weights Private

Input Modalities

Accuracy

58.54 %

Avg. Cost (In/Out)

$ 0.05 / $ 0.40

Latency

55.01 s

Vals Index

BenchmarksAccuracyRankings

0.0%

±1.95

86/96

0.0%

±1.89

75/98

0.0%

±0.97

81/98

0.0%

±2.83

74/83

0.0%

±0.91

110/145

0.0%

±2.46

107/138

0.0%

±0.93

90/143

0.0%

±0.47

145/147

0.0%

±0.41

109/138

0.0%

±1.09

69/93

Proprietary BenchmarksAcademic BenchmarksIndustry Partners

Vals

View Hyperparameter Settings

Default Provider : OpenAI

Temperature: Default

Top P: Default

Top K: Default

Max Output Tokens: 128,000

Reasoning Effort: high