Anthropic: Claude Opus 5.5
Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5.
AnthropicClaude Opus 5.5
anthropic/claude-opus-5.5Intelligence index
59.1
Artificial Analysis
Design Arena
1348 Elo · #1
codetovideo · 73.2% wins
Input
$4
per 1M tokens
Output
$20
per 1M tokens
Cached input
$0.20
per 1M tokens
Context
1M
tokens it reads
Max output
128K
tokens it writes
Claude Opus 5.5 is Anthropic's flagship model for demanding reasoning, coding, and long-horizon agentic work, succeeding Claude Opus 5. It is particularly strong at multi-step changes in large codebases, code...
inspect — the catalog entry
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}
}References (1)
- Stored model catalog — Nov 5, 2026