Claude 3.5 Sonnet vs Claude Opus 4.6
As of Oct 15, 2026, Claude 3.5 Sonnet leads Claude Opus 4.6 in 0 of 5 shared categories.
Claude 3.5 Sonnet
It used to be. Was SOTA in General LLM.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
| Category | Claude 3.5 Sonnet | Claude Opus 4.6 |
|---|---|---|
| General LLM | #181 · Was SOTA · General LLM Margin 96.27659574468085 LMArena leaderboard dataset · Oct 13, 2026 | #4 · Near-SOTA · General LLM Margin 2.1276595744680833 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #175 · Was SOTA · Reasoning Margin 93.61702127659575 LMArena leaderboard dataset · Oct 13, 2026 | #2 · Near-SOTA · Reasoning Margin 1.5957446808510696 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #43 · #43 in Math Margin 95.55555555555556 Epoch AI benchmarking hub · Oct 22, 2024 | #11 · #11 in Math Margin 22.22222222222223 Epoch AI benchmarking hub · Feb 5, 2026 |
| Science | #119 · #119 in Science Margin — Epoch AI benchmarking hub · Oct 22, 2024 | #32 · #32 in Science Margin — Epoch AI benchmarking hub · Feb 5, 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 |
| Long context | #163 · Was SOTA · Long context Margin 86.70212765957447 LMArena leaderboard dataset · Oct 13, 2026 | #2 · Near-SOTA · Long context Margin 0.5319148936170421 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 |
Claude 3.5 Sonnet: price per 1M tokens is unset in the catalog.
Claude Opus 4.6: $10 per 1M blended tokens.
Claude 3.5 Sonnet: closed weights.
Claude Opus 4.6: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Claude 3.5 Sonnet in General LLM at #4 against #181.
Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Claude 3.5 Sonnet in Reasoning at #2 against #175.
Math: As of Oct 15, 2026, Claude Opus 4.6 leads Claude 3.5 Sonnet in Math at #11 against #43.
Science: As of Oct 15, 2026, Claude Opus 4.6 leads Claude 3.5 Sonnet in Science at #32 against #119.
Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Claude 3.5 Sonnet in Long context at #2 against #163.
Claude 3.5 Sonnet · Claude Opus 4.6
Claude 3.5 Sonnet or Claude Opus 4.6?
As of Oct 15, 2026, Claude 3.5 Sonnet leads Claude Opus 4.6 in 0 of 5 shared categories.
Claude 3.5 Sonnet or Claude Opus 4.6 for General LLM?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude 3.5 Sonnet in General LLM at #4 against #181.
Claude 3.5 Sonnet or Claude Opus 4.6 for Reasoning?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude 3.5 Sonnet in Reasoning at #2 against #175.
Claude 3.5 Sonnet or Claude Opus 4.6 for Math?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude 3.5 Sonnet in Math at #11 against #43.