OpenCraftanthropic · chat model
Try Claude Sonnet 4.5 online
anthropic/claude-sonnet-4.5Added to OpenRouter: 29 Sept 2025
Tracking since: · Specs updated:
Use Claude Sonnet 4.5 in your browser. Explore pricing and capabilities below, or start a chat in OpenCraft.
Input price$3.00per M tokenscheaper than 9% of chat models
Output price$15.00per M tokenscheaper than 8% of chat models
Cache read$0.30per M tokens
Context window1Mtokensof the largest window in the catalog (10M)
Claude Sonnet 4.5 pricing: what a turn costs
Estimates from the published token rates above — real turns vary with tool calls and transcript length.
- Quick answer2K tokens in, 600 out$0.015
- 10-slide deck build60K tokens in, 9K out$0.315
- 150-page PDF read200K tokens in, 4K out$0.66
Specs and listed prices from OpenRouter. Actual usage cost depends on the serving provider.
How to use Claude Sonnet 4.5
- Select “Try Claude Sonnet 4.5 online” to open OpenCraft with this model selected.
- Sign in or create an account if prompted.
- Type a question or describe a task, then send your message.
To compare answers, start a separate chat with another model and use the same prompt.
Claude Sonnet 4.5 capabilities
tool-usevisionreasoning
text, image, file in → text out
Create with OpenCraft
See example outputs and find a workflow for your next project.