Claude Opus 4.6 vs Claude Sonnet 4
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4 in 5 of 5 shared categories: General LLM, Reasoning, Math, Science, and Long context.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
Claude Sonnet 4
#35 Best current rank: #35 in Math, as of Oct 15, 2026.
| Category | Claude Opus 4.6 | Claude Sonnet 4 |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.1276595744680833 LMArena leaderboard dataset · Oct 13, 2026 | #163 · #163 in General LLM Margin 86.70212765957447 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 1.5957446808510696 LMArena leaderboard dataset · Oct 13, 2026 | #149 · #149 in Reasoning Margin 79.7872340425532 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #11 · #11 in Math Margin 22.22222222222223 Epoch AI benchmarking hub · Feb 5, 2026 | #35 · #35 in Math Margin 77.77777777777777 Epoch AI benchmarking hub · May 22, 2025 |
| Science | #32 · #32 in Science Margin — Epoch AI benchmarking hub · Feb 5, 2026 | #97 · #97 in Science Margin — Epoch AI benchmarking hub · May 22, 2025 |
| 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 | — |
| Long context | #2 · Near-SOTA · Long context Margin 0.5319148936170421 LMArena leaderboard dataset · Oct 13, 2026 | #123 · #123 in Long context Margin 65.42553191489361 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 2.3255813953488342 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Abstraction (ARC) | — | #67 · #67 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 22, 2025 |
Claude Opus 4.6: $10 per 1M blended tokens.
Claude Sonnet 4: $6 per 1M blended tokens.
Claude Opus 4.6: closed weights.
Claude Sonnet 4: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4 in General LLM at #4 against #163.
Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4 in Reasoning at #2 against #149.
Math: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4 in Math at #11 against #35.
Science: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4 in Science at #32 against #97.
Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4 in Long context at #2 against #123.
Claude Opus 4.6 · Claude Sonnet 4
Claude Opus 4.6 or Claude Sonnet 4?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4 in 5 of 5 shared categories: General LLM, Reasoning, Math, Science, and Long context.
Claude Opus 4.6 or Claude Sonnet 4 for General LLM?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4 in General LLM at #4 against #163.
Claude Opus 4.6 or Claude Sonnet 4 for Reasoning?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4 in Reasoning at #2 against #149.
Claude Opus 4.6 or Claude Sonnet 4 for Math?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Sonnet 4 in Math at #11 against #35.