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GPT-5 Nano

Multimodalby OpenAI·Model page

OpenAI's compact multimodal reasoning model with a 400k-token context for text, image, and file inputs.

Rankings
#69on OpenRouter
40.7B tokens
View rankings
Max output

Most tokens the model can return in a single response.

128Ktokens
Reasoning
Reasoning-first model

Works through a step-by-step chain of thought before answering.

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Design Arena

Design Arena ranks models on real-world front-end and design tasks — websites, UI components, data viz, SVG and more — through head-to-head human votes, scored as an ELO rating.
CategoryELOWin rateRank
Website113248.9%#79
Code112148.1%#79
UI component111352.0%#75
Game dev110446.6%#81
Data viz109346.7%#82

Pricing

per 1M tokens
Input$0.05 /1M
Output$0.4 /1M
Cache read$0.005 /1M
Web search$0.01

Model Description

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...

Author
O
OpenAI
Organization · ✓
openai
Details
Downloads
Likes
AccessClosed Source
Context400K tokens
Input price$0.05 /1M
Output price$0.4 /1M
Knowledge cutoffMay 31, 2024
CreatedAug 7, 2025
Updated
View on Hugging Face
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GPT-5 Nano — AI Model Details | Applied