Claude Opus 4.6 vs Claude Sonnet 5
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Sonnet 5 in 5 of 6 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
Claude Sonnet 5
#19 Best current rank: #19 in Coding, as of Oct 14, 2026.
| Category | Claude Opus 4.6 | Claude Sonnet 5 |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.7210884353741562 LMArena leaderboard dataset · Oct 13, 2026 | #39 · #39 in General LLM Margin 26.530612244897952 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 2.0547945205479436 LMArena leaderboard dataset · Oct 13, 2026 | #34 · #34 in Reasoning Margin 23.972602739726028 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #11 · #11 in Math Margin 22.22222222222223 Epoch AI benchmarking hub · Feb 5, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #32 · #32 in Science Margin — Epoch AI benchmarking hub · Feb 5, 2026 | #32 · #32 in Science Margin — Epoch AI benchmarking hub · Jun 30, 2026 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Feb 5, 2026 | #19 · #19 in Coding Margin 95.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #19 · #19 in Coding › Agentic Margin 95.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #35 · Was SOTA · Coding › Web dev Margin 31.775700934579433 LMArena leaderboard dataset · Oct 13, 2026 | #38 · #38 in Coding › Web dev Margin 34.57943925233644 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #2 · Near-SOTA · Long context Margin 0.6802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #31 · #31 in Long context Margin 21.088435374149654 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #3 · Near-SOTA · Factuality Margin 2.9850746268656536 LMArena leaderboard dataset · Oct 13, 2026 | #47 · #47 in Factuality Margin 35.82089552238806 LMArena leaderboard dataset · Oct 13, 2026 |
Claude Opus 4.6: $10 per 1M blended tokens.
Claude Sonnet 5: $4.000000000000001 per 1M blended tokens.
Claude Opus 4.6: closed weights.
Claude Sonnet 5: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Sonnet 5 in General LLM at #4 against #39.
Reasoning: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Sonnet 5 in Reasoning at #2 against #34.
Science: As of Oct 14, 2026, Claude Opus 4.6 and Claude Sonnet 5 share #32 in Science.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Sonnet 5 in Coding › Web dev at #35 against #38.
Long context: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Sonnet 5 in Long context at #2 against #31.
Factuality: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Sonnet 5 in Factuality at #3 against #47.
Claude Opus 4.6 · Claude Sonnet 5
Claude Opus 4.6 or Claude Sonnet 5?
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Sonnet 5 in 5 of 6 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 4.6 or Claude Sonnet 5 for General LLM?
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Sonnet 5 in General LLM at #4 against #39.
Claude Opus 4.6 or Claude Sonnet 5 for Reasoning?
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Sonnet 5 in Reasoning at #2 against #34.
Claude Opus 4.6 or Claude Sonnet 5 for Science?
As of Oct 14, 2026, Claude Opus 4.6 and Claude Sonnet 5 share #32 in Science.