What it is
Anthropic’s terminal-first agentic coding engine. Reads files, writes files, runs terminal, chains tasks. Built on Claude Sonnet 4.x and Opus 4.x.
Tiers
- Pro ($20/mo): Sonnet 4.x + limited Opus 4.x. Most users.
- Max ($200/mo): Heavy Opus 4.x usage. 13x more expensive than GLM Pro tier.
Benchmarks
- SWE-bench Verified: 80.8% (Opus 4.x) vs GitHub Copilot’s 72.5%
- Default context window: 200K, up to 1M on Opus 4.x
- Multi-file refactoring: 30+ files autonomously
- Long-running autonomy: hours
Verdict
The gold standard for terminal agentic coding. If you need Opus-grade coding and the terminal-first model fits, this is the benchmark. Pro at $20 is the right tier for most users; Max at $200 is for power users only.
See Claude Code vs GitHub Copilot for detailed comparison.