Claude Sonnet 5.5 uses Claude bash through Opper on the Messages endpoint, passed through as Anthropic defines it.
Paste this into your coding agent (Claude Code, Cursor, Codex, and more) and it will set up and build with Opper for you.
curl https://api.opper.ai/v3/compat/v1/messages \-H "Authorization: Bearer $OPPER_API_KEY" \-H "Content-Type: application/json" \-d '{"model": "anthropic/claude-sonnet-5-5", "max_tokens": 1024,"messages": [{"role": "user", "content": "List the files in this repo."}],"tools": [{"type": "bash_20250124", "name": "bash"}]}'
Claude Sonnet 5.5 runs Claude bash on the routes below.
| Provider | Region | Zero data retention | Training | Input | Output | Cache read |
|---|---|---|---|---|---|---|
| EU | No | $2.20 | $11.00 | $0.11$2.75 write | ||
| EU | No | $2.20 | $11.00 | $0.11$2.75 write | ||
| US | No | $2.00 | $10.00 | $0.20$2.50 write | ||
| Multi | No | $2.00 | $10.00 | $0.10$2.50 write | ||
| Multi | No | $2.00 | $10.00 | $0.10$2.50 write |
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.
Step-by-step setup for Claude bash on each of these models through Opper.
Claude drives a desktop through screenshots, clicks and typing in your agent loop.
computer_toolsetClaude reads and edits files with its own file-editing tool.
text_editorGPT models write and run Python in a sandbox, on the Responses endpoint.
code_interpreter