GPT-5 nano: benchmarks, price and rank
GPT-5 nano from OpenAI is 121st of 123 rated AI models on Spezia's leaderboard. It costs $0.05 in, $0.40 out per million tokens.
- 121st of 123 rated models
- Rating 273
- Rated on 7 benchmarks
- Closed
- Released Aug 7, 2025
- 400,000 tokens of context
- Knows the world to May 2024
Where it is strongest
Not in the top tenth on any benchmark in use.
Where it falls behind
- 101st of 103 on GPQA Diamond
- 92nd of 94 on Epoch Capabilities Index
- 76th of 78 on SimpleQA Verified
Price: $0.05 in, $0.40 out per million tokens.
Its headline results
The benchmarks that count most in the rating, with its place among the models measured the same way, and where each number came from.
- Humanity's Last Exam8.7%
About 2,500 questions written by experts in more than a hundred fields to be as hard as they could make them, many needing a diagram or image.
69th of 74. The maker's own number, from OpenAI, via LLM Stats.
- SimpleQA Verified11.7%
Short factual questions with one checked answer, asked without web search.
76th of 78. Independent result from Epoch AI.
- FrontierMath20%
Hundreds of new, unpublished math problems written by mathematicians, from hard undergraduate level up to research, with answers a computer can check.
72nd of 76. Independent result from Epoch AI.
- LMArena text1,320
People put a question to two anonymous models and vote for the better answer.
104th of 107. Independent result from LMArena.
- GPQA Diamond69.4%
Graduate-level questions in biology, physics and chemistry, written by PhDs so that searching the web does not give the answer away.
101st of 103. Independent result from Epoch AI.
- ARC-AGI-22.6%
Visual puzzles of colored grids, each with a new rule to work out from a few examples.
64th of 69. Independent result from Epoch AI.
- FrontierMath Tier 42.4%
Research-level problems that take professional mathematicians days.
62nd of 66. Independent result from Epoch AI.
- Epoch Capabilities Index139.1
One score built from dozens of benchmarks, set on a common scale so that models tested on different benchmarks can still be compared.
92nd of 94. Independent result from Epoch AI.
1 more results in its full profile.
Every result with its source, what it costs per task, what jumped with its release, side by side with any other model, and answers to your questions about when to use it.
Models ranked near it
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- 123rd Qwen3 VL 4B Instruct
How the rating works, and every benchmark it uses: the model leaderboard.