GPT-4.5 on OpenRouter

GPT-4.5 · OpenAI

Serverless

Capabilities

VisionMultimodalReasoningFunction CallingTool UseJSON ModeCode Execution

About GPT-4.5

Improved GPT-4 variant released March 2026. Enhanced performance over GPT-4o with better reasoning and code generation.

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Model Specs

Released2026-03-12

Context8K

Knowledge cutoff2025-04

Other Providers(2)

OpenAI API Azure OpenAI

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Provider

OpenRouter, Inc.

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