Using GPT-5.4 Pro on OpenRouter

Quick Start

1. 1
   Create an account at OpenRouter and generate an API key.
2. 2
   Use the OpenRouter SDK or REST API to call openai/gpt-5.4-pro — see the documentation for request format.
3. 3
   You'll be billed $30.00/1M input, $180.00/1M output tokens. See full pricing.

Code Examples

About OpenRouter

OpenRouter provides a unified interface for Large Language Models with better pricing, improved uptime, and no subscription requirements. Route across providers for cost optimization and reliability.

Multi-provider LLM aggregator offering unified API access to 300+ models from all major labs and emerging providers, with automatic failover for reliability.

Pricing on OpenRouter

Capabilities

About GPT-5.4 Pro

GPT-5.4 Pro is OpenAI's most advanced GPT-5.4 model with enhanced reasoning capabilities and up to 1M token context, designed for the most demanding enterprise agentic tasks.