Using Claude 4 Opus on OpenRouter

Implementation guide · Claude 4 · Anthropic

Serverless

OpenRouter exposes Claude 4 Opus through model ID anthropic/claude-opus-4. Use the setup steps, sourced pricing, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-07-26. Next refresh: weekly.

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 anthropic/claude-opus-4 — see the documentation for request format.
  3. 3
    You'll be billed $15.00/1M input, $75.00/1M output tokens. See full pricing.
API PortalDocumentationPricingModel Card

Code Examples

See OpenRouter documentation for integration details.

Pricing on OpenRouter

TypePrice (per 1M)
Input tokens$15.00
Output tokens$75.00

Capabilities

VisionMultimodalJSON / Tool useStructured OutputsFine-tuning

About Claude 4 Opus

Anthropic Claude 4 Opus API snapshot (claude-opus-4-20250514), deprecated April 14, 2026 with Claude API retirement scheduled for June 15, 2026. Use Claude Opus 4.8 for current integrations.

Full model details →

Model Specs

Released2025-05-14
Context200k
Knowledge cutoff2025-04

More Models on OpenRouter

Claude Opus 4.1Claude Sonnet 4
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Also available on(1)

Anthropic$15.00/1M
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Provider

OpenRouter

OpenRouter, Inc.

New York, NY, USA