Use Claude computer use with Claude Sonnet 5.5

by AnthropicCode

Claude Sonnet 5.5 uses Claude computer use through Opper on the Messages endpoint, passed through as Anthropic defines it.

UseClaude computer usewithin

Add Claude computer use to Claude Sonnet 5.5

Set up with agents

Paste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.

Get your API key

In your code

1curl https://api.opper.ai/v3/compat/v1/messages \
2  -H "Authorization: Bearer $OPPER_API_KEY" \
3  -H "Content-Type: application/json" \
4  -d '{"model": "anthropic/claude-sonnet-5-5", "max_tokens": 1024,
5       "messages": [{"role": "user", "content": "Open a browser and go to opper.ai."}],
6       "tools": [{"type": "computer_toolset_20260801"}]}'

Where you can run it

Claude Sonnet 5.5 runs Claude computer use on the routes below.

Provider	Region	Training	Input	Output	Cache read
Google Cloud	EU	No	$2.20	$11.00	$0.11$2.75 write
Anthropic	US	No	$2.00	$10.00	$0.20$2.50 write
Google Cloud	Multi	No	$2.00	$10.00	$0.10$2.50 write

The model

Claude Sonnet 5.5

by Anthropic

Claude Sonnet 5.5 is Anthropic's fast model for scoped coding, bug fixing, agent work, and polished documents, with adaptive thinking and a one million token context window.