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OpenRouter

GPT-5.4 Nano API

OpenRouter
About

Integrate multimodal vision capabilities using GPT-5.4 Nano, designed to process both text and images seamlessly. This model delivers cost-effective pricing at $0.20/1M input and $1.25/1M output tokens, native tool calling support. Access GPT-5.4 Nano via the OpenRouter API with up to 128K output tokens.

Capabilities

Input Modalities

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Output Modalities

text
Reasoning
No
Structured Output
Yes
Tool Use
Yes
WeightsClosed
Temperature
Adjustable
Attachment
Supported
Limits
Context Window
400K

Tokens

Input Limit
400K

Tokens

Max Output
128K

Tokens

Pricing

Standard (per 1M tokens)

Input
$0.20
Output
$1.25

Caching (per 1M tokens)

Read
$0.02
Frequently Asked Questions

GPT-5.4 Nano by OpenRouter costs $0.20 per 1M input tokens and $1.25 per 1M output tokens. Cached reads cost $0.02 per 1M tokens.

Model Details
ID
openai/gpt-5.4-nano
Provider
OpenRouter
Family
gpt-nano
Release Date
Mar 17, 2026
Knowledge Cutoff
Aug 31, 2025
API Integration
NPM Package
@openrouter/ai-sdk-provider
Environment Variables
OPENROUTER_API_KEY
API Base URL
https://openrouter.ai/api/v1
Documentation