GPT-5 Nano
GPT-5 nano is an AI model from OpenAI.
- Publisher
- OpenAI
- Family
- GPT
- Context
- 400K
- Input
- Output
- License
- proprietary
- Released
- 7 Aug 2025
Cite
Notes
Only stored in your browser.
Context
400K
Weights
Closed
API only
Input
$0.05
/1M tok
Output
$0.40
/1M tok
Cache read
$0.01
0.10x input
Price & speed via Artificial Analysis · ranked across tracked models · caching via OpenRouter
| Reasoning effort | Index | Speed |
|---|---|---|
| high | 13.0 | 0 t/s |
| medium | 12.5 | 0 t/s |
| minimal | 7.1 | 0 t/s |
Intelligence Index per reasoning-effort setting, via Artificial Analysis · pricing identical across tiers
Reported on 49 evals across 12 domains - best 100.0% on Mostly Basic Python Problems (MBPP) · #1 of 15
Reported eval scores
49Sudoku1.7
Game Of Life1.2
Math Python100
Math Python100
Medcasereasoning26.7
Mastermind1.4
Mastermind1.4
Vf Binary Liar20.4
Clockbench6.7
Fingpt Sentiment78.2
Banking Mrm0.3
Vf Thick Fog-6.7
Head-to-heads
29benchmark comparisons against other models
vs GPT-5 Mini38 shared evalsvs Claude Sonnet 4.531 shared evalsvs GPT-528 shared evalsvs GPT-4.1 Mini26 shared evalsvs GPT-5.226 shared evalsvs Claude Opus 4.526 shared evalsvs Claude 4 Sonnet25 shared evalsvs Gemini 2.5 Pro24 shared evalsvs Grok 4.1 Fast24 shared evalsvs GPT-5.523 shared evalsvs Claude Opus 4.623 shared evalsvs GLM 4.723 shared evalsvs Gemini 3.1 Pro Preview22 shared evalsvs Claude Opus 4.822 shared evalsvs GPT-5.422 shared evalsvs Kimi K2.522 shared evalsvs Claude Opus 4.722 shared evalsvs DeepSeek V3.222 shared evalsvs GPT-4.1 Nano22 shared evalsvs gpt-oss-120b22 shared evalsvs Claude Fable 521 shared evalsvs GLM 5.121 shared evalsvs GPT-4.120 shared evalsvs Claude Sonnet 4.620 shared evalsvs GPT-5.4 Mini20 shared evalsvs Qwen3.6 Plus19 shared evalsvs GPT-4o18 shared evalsvs GPT-4o-mini16 shared evalsvs GPT-6 Astra10 shared evals