OpenAI: GPT-5 Nano
openai/gpt-5-nano
122nd smartest of 182Cheaper than 95% of paidReasoningToolsJSONVision
Intelligence
19.9
122nd of 182
Design Elo
1125
Website
Speed
—
tokens/sec
Latency
—
first token
Input price
$0.050
16th cheapest
Context
400K
128K max out
How it compares
Smarter than33%
of all ranked models
Cheaper than95%
of all ranked models
Overview
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
Benchmarks
independent · Artificial Analysis & Design ArenaArtificial Analysis60th percentile
Intelligence Index
19.9
GPQA Diamond
68%
Humanity's Last Exam
8%
SciCode
37%
Tau²-Bench (agentic)
37%
Design Arena · Elo5,414 tournaments
Website
1125
Data Viz
1089
3D
1021
Providers & pricing (4)
| Provider | In $/M | Out $/M | Context | Uptime |
|---|---|---|---|---|
| OpenAIcache | $0.050 | $0.400 | 400K | 99.3% |
| OpenAIcache | $0.025 | $0.200 | 400K | 99.3% |
| Azure | $0.050 | $0.400 | 400K | 99.9% |
| Azure | $0.055 | $0.440 | 400K | — |
Specifications
Context window400K
Max output128K
Knowledge cutoffMay 2024
Input modalitiestext, image, file
Output modalitiestext
Prompt cachingSupported
Cache read price$0.0050/M
ModeratedYes
GPT-5 Nano FAQ
How much does GPT-5 Nano cost?
GPT-5 Nano costs $0.050 per million input tokens and $0.400 per million output tokens via OpenRouter, making it 16th cheapest of 332 paid models.
How smart is GPT-5 Nano?
GPT-5 Nano scores 19.9 on the Artificial Analysis Intelligence Index, ranking 122nd of 182 benchmarked models, with a GPQA Diamond score of 68%.
What is GPT-5 Nano's context window?
GPT-5 Nano supports a 400K-token context window and can output up to 128K tokens. It accepts text, image, file input.