Anthropic
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Listed May 2025
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Multimodal Foundation
Claude Opus 4
Arena #119 • score 1426 ±4
Proprietary model from Anthropic, listed May 2025. Arena text score 1426 (#119 of 414 entries). $15.00 input / $75.00 output per 1M tokens. 200K tokens context.
Parameters
Not disclosed
Context Window
200K tokens
Input / 1M tokens
$15.00
Output / 1M tokens
$75.00
Benchmark Results
- Arena Text Elo: 1426 (#119 of 414 on arena.ai · ±4 · 35,913 votes · variant: claude-opus-4-20250514-thinking-16k)
- SWE-bench Verified: 67.6% (mini-SWE-agent (bash only) · run 'Claude 4 Opus (20250514)' · 2025-08-02)
- AA Intelligence Index: 20.6 (Artificial Analysis v4.3 · best setting: Claude 4 Opus (Reasoning) · checked 2026-10-11)