Last refreshed 2026-05-19. Next refresh: weekly.
Why use Claude Opus 4.5 on OpenRouter?
OpenRouter offers Claude Opus 4.5 with pay-as-you-go pricing at $5.00/1M input tokens. 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.
Compare Claude Opus 4.5 across 6 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: anthropic/claude-opus-4.5anthropic/claude-opus-4.5Request example
anthropic/claude-opus-4.5.Gotchas
- Use provider model ID "anthropic/claude-opus-4.5", not the LLMReference slug "claude-opus-4-5".
Compare Claude Opus 4.5 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Microsoft Foundry | $5.00 | $25.00 |
| Anthropic | $5.00 | $25.00 |
| GCP Vertex AI | $5.00 | $25.00 |
| AWS Bedrock | $18.00 | $90.00 |
| OpenRouter | $5.00 | $25.00 |
Pricing
| Type | Price (per 1M) |
|---|---|
| Input tokens | $5.00 |
| Output tokens | $25.00 |
Capabilities
About Claude Opus 4.5
Claude Opus 4.5 is Anthropic's Claude 4.5 model with multimodal text and image input and an optional reasoning mode. It offers a 200K-token context window and scores 80.7 on MMMU.
FAQ
What does Claude Opus 4.5 cost on OpenRouter?
On OpenRouter, Claude Opus 4.5 costs $5 per 1M input tokens and $25 per 1M output tokens.
What is the context window for Claude Opus 4.5 on OpenRouter?
Claude Opus 4.5 supports a 200k token context window on OpenRouter.
How does OpenRouter compare to other Claude Opus 4.5 providers?
Claude Opus 4.5 is available from 6 providers. The cheapest input pricing is $5/1M tokens from Microsoft Foundry.
What API model ID do I use for Claude Opus 4.5 on OpenRouter?
Use the model ID anthropic/claude-opus-4.5 when calling OpenRouter's API.
Who created Claude Opus 4.5?
Claude Opus 4.5 was created by Anthropic as part of the Claude 4.5 model family.
Is Claude Opus 4.5 open source?
Claude Opus 4.5's open source status is unknown in the seed data.