LLM Reference
OpenRouter

Using Claude Opus 4.1 on OpenRouter

Implementation guide · Claude 4 · Anthropic

Serverless

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-4.1 — 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.

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.

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

View all models on OpenRouter →

Pricing on OpenRouter

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

Capabilities

Structured Outputs

About Claude Opus 4.1

Claude Opus 4.1 is Anthropic's Claude 4 model. It offers a 200K-token context window and scores 77.1 on MMMU.

Full model details →

Model Specs

Released2025-08-01
Context200k
Knowledge cutoff2025-03

More Models on OpenRouter

Claude 4 OpusClaude Sonnet 4
All models on OpenRouter →

Also available on(4)

Anthropic$15.00/1MAWS Bedrock$15.00/1MMicrosoft Foundry$15.00/1M
Compare all providers →

Provider

OpenRouter
OpenRouter

OpenRouter, Inc.

New York, NY, USA