GPT-4.1 Nano

GPT-4.1 Nano

Developer	OpenAI
Release date	April 14, 2025
Family	GPT
Generation	GPT-4.1
Level
Context window	1M tokens
Max output	943K tokens
Input	Image, text, file
Output	Text
Knowledge cutoff	2024-04
Weights	Closed
Successor	GPT-5 Nano
Website	openai.com
Links	Docs

Part of a series on

input: $0.10
cached: $0.03
output: $0.40
Context: 1Mtokens
Released: 1y ago

Specifications

Model

Developer: OpenAI
Family: GPT GPT-4.1
Type: Language model
Released: April 14, 2025
Model ID: openai/gpt-4.1-nano

Capabilities

Input → output: Image, text, file → Text
Max output: 943K tokens
Tokenizer: GPT
Knowledge cutoff: 2024-04

Weights

Openness: Closed

Sources:models.devOpenRouter

Metadata synced Nov 8, 2026, 11:01 AM UTC

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