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GPT-5 Nano

OpenAI
Announcement
GPT-5 Nano launch post cover

Cost/1M tokens

input
$0.05
cached
$0.005
output
$0.40
Context
400Ktokens
Released
1y ago

Specifications

Model

Developer
OpenAI
Family
GPTGPT-5
Type
Language model
Released
August 7, 2025
Model ID
openai/gpt-5-nano

Capabilities

Input → output
Text, image, file → Text
Max output
128K tokens
Tokenizer
GPT
Knowledge cutoff
2024-05-30

Weights

Openness
Closed

Sources:models.devOpenRouter

Metadata synced Nov 3, 2026, 11:17 PM UTC

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