Anthropic
Previous flagship Claude Opus release retained for compatibility after the Claude Opus 4.7 launch. Still strong for advanced reasoning, extended thinking, computer use, and coding, but superseded by Opus 4.7 for Anthropic's latest top-end performance.
Previous flagship Claude Opus release retained for compatibility after the Claude Opus 4.7 launch.
60.3
Quality Score
1293
Arena ELO
Undisclosed
Parameters
200K
Context
Use this section to answer one simple question first: how much outside evidence do we have that this model performs well? Structured benchmark scores appear first, then official provider evidence, then live arena signal.
This model has normalized benchmark rows, so scores here are directly comparable across benchmark sources.
Sign in to join the discussion
0
Downloads
0
Likes
Dec 2025
Released
These are recent benchmark or leaderboard claims from official provider sources. They are useful for freshness and context, but they are not treated the same as normalized independent benchmark rows.
claude-opus-4-6 - SWE-Bench Verified
SWE-Bench Verified resolved rate 75.6
View sourceClaude-Opus-4 - LiveCodeBench
LiveCodeBench pass@1 62.4 across 1055 tasks
View sourceClaude Opus 4.6 Benchmark Update
Quality: 92/100 | Speed: 40/100 | Price: $15/M tokens | MMLU: 91.5% | HumanEval: 92.5%
View sourceClaude Opus 4.6 Benchmark Update
Quality: 92/100 | Speed: 40/100 | Price: $15/M tokens | MMLU: 91.5% | HumanEval: 92.5%
View sourceClaude Opus 4.6 Benchmark Update
Quality: 92/100 | Speed: 40/100 | Price: $15/M tokens | MMLU: 91.5% | HumanEval: 92.5%
View sourceClaude Opus 4.6 Benchmark Update
Quality: 92/100 | Speed: 40/100 | Price: $15/M tokens | MMLU: 91.5% | HumanEval: 92.5%
View source1293
ELO Score
1285 - 1301
95% Confidence
+/-8 points
8.5K
Battles
May 20, 2026
Last Updated