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GPT-5 Nano

Ultra-efficient GPT-5 variant for high-volume applications with reasoning support.

openai/gpt-5-nano
STABLEScheduled for DeactivationGet Started
Streaming
Tools
Reasoning
JSON Output
Structured JSON
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OpenAI
Context: 400k10% off
Deactivating on Dec 10, 2026
Input
$0.05$0.045
/M tokens
Cache Read
$0.005$0.0045
/M tokens
Output
$0.4$0.36
/M tokens
+ $0.010$0.009 per search
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