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GPT-5.4 Nano

OpenAI
Announcement
GPT-5.4 Nano launch post cover

Cost/1M tokens

input
$0.20
cached
$0.02
output
$1.25
Context
400Ktokens
Released
8mo ago

Specifications

Model

Developer
OpenAI
Family
GPTGPT-5.4
Type
Language model
Released
March 17, 2026
Model ID
openai/gpt-5.4-nano

Capabilities

Input → output
File, image, text → Text
Max output
128K tokens
Tokenizer
GPT
Knowledge cutoff
2025-08-31

Weights

Openness
Closed

Sources:models.devOpenRouter

Metadata synced Nov 5, 2026, 4:00 PM UTC

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