Gangsta AI

Claude Opus 5.5 — The Cleaner

The Cleaner · Frontier model

Anthropic's most capable model. The Cleaner in the crew — the one you bring in to finish the job when the answer has to be right.

Try Claude Opus 5.5 free →

By Anthropic · quality 98/100 · speed 66/100 · 200K-token context

What Claude Opus 5.5 does

• The deepest, most careful reasoning
• Best-in-class long-form writing (99/100 writing)
• 200K context for whole-document analysis

Why it's a frontier model

For legal, research, long-form writing and code review where precision and citations matter more than raw speed.

Best for

• Legal & research
• Long-form writing
• Code review

The rest of the frontier crew

GPT-6 Astra (The Wildcard) · Gemini 3.1 Pro (The Oracle) · Claude Fable 5.1 (The Prodigy) — or see all five compared. Run Claude Opus 5.5 against them on one prompt, free.