Model Selection
Switch between Claude Opus, Sonnet, and Haiku mid-session to balance capability and cost for each task.
Available Models
Through Chuizi.AI's /anthropic endpoint, Claude Code can use these models:
Current Generation
| Model | Input Price | Output Price | Context Window | Strengths |
|---|---|---|---|---|
claude-opus-4-6 | $15 / 1M | $75 / 1M | 200K | Most capable, complex tasks |
claude-sonnet-4-6 | $3 / 1M | $15 / 1M | 200K | Best overall value |
claude-haiku-4-5 | $1 / 1M | $5 / 1M | 200K | Fastest, lightweight tasks |
Default Model
Claude Code defaults to claude-sonnet-4-6. For most coding tasks, this is the right choice:
- Code understanding and generation quality approaches Opus
- Response speed is 2-3x faster than Opus
- Only $15 per 1M output tokens (vs. $75 for Opus)
Next Steps
- Configuration - Set up environment variables
- Troubleshooting - Solutions for common issues
- Prompt Caching Guide - Deep dive into the caching mechanism