Claude Opus 4.6 vs Claude Sonnet 4.6
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
Claude Sonnet 4.6
It used to be. Was SOTA in Long context.
| Category | Claude Opus 4.6 | Claude Sonnet 4.6 |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.1276595744680833 LMArena leaderboard dataset · Oct 13, 2026 | #38 · #38 in General LLM Margin 20.212765957446805 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 1.5957446808510696 LMArena leaderboard dataset · Oct 13, 2026 | #20 · #20 in Reasoning Margin 11.170212765957444 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 | #50 · #50 in Science Margin — Epoch AI benchmarking hub · Feb 17, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #37 · Was SOTA · Coding › Web dev Margin 28.799999999999997 LMArena leaderboard dataset · Oct 13, 2026 | #43 · #43 in Coding › Web dev Margin 33.599999999999994 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #2 · Near-SOTA · Long context Margin 0.5319148936170421 LMArena leaderboard dataset · Oct 13, 2026 | #21 · Was SOTA · Long context Margin 11.170212765957444 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #23 · Was SOTA · Vision Margin 63.1578947368421 Epoch AI benchmarking hub · Feb 17, 2026 |
| Factuality | #3 · Near-SOTA · Factuality Margin 2.3255813953488342 LMArena leaderboard dataset · Oct 13, 2026 | #38 · #38 in Factuality Margin 22.674418604651166 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #23 · #23 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 17, 2026 |
Claude Opus 4.6: $10 per 1M blended tokens.
Claude Sonnet 4.6: $6 per 1M blended tokens.
Claude Opus 4.6: closed weights.
Claude Sonnet 4.6: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in General LLM at #4 against #38.
Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Reasoning at #2 against #20.
Science: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Science at #32 against #50.
Coding › Web dev: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Coding › Web dev at #37 against #43.
Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Long context at #2 against #21.
Factuality: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Factuality at #3 against #38.
Claude Opus 4.6 · Claude Sonnet 4.6
Claude Opus 4.6 or Claude Sonnet 4.6?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Opus 4.6 or Claude Sonnet 4.6 for General LLM?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in General LLM at #4 against #38.
Claude Opus 4.6 or Claude Sonnet 4.6 for Reasoning?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Reasoning at #2 against #20.
Claude Opus 4.6 or Claude Sonnet 4.6 for Science?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4.6 in Science at #32 against #50.