OpenAI Inc.
gpt-5-nano:flex
GPT-5 nano is OpenAI's fastest, cheapest version of GPT-5. It's great for summarization and classification tasks.
👁Vision🧠Reasoning🔧Tool calling⚡Caching
Pricing per 1M tokens
Input
$0.02
Output
$0.20
Cache write
$0.02
Cache read
$0.0025
Specifications
Context window400K tokens
Max output128K tokens
API typechat
AddedAug 7, 2025
Model IDopenai/gpt-5-nano:flex
Privacy & data
Data retentionYes (30 days)
Used for trainingNo
Provider location🇺🇸 US
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