Claude Opus 4 vs Claude Opus 4.6
As of Oct 15, 2026, Claude Opus 4 leads Claude Opus 4.6 in 0 of 5 shared categories.
Claude Opus 4
It used to be. Was SOTA in Reasoning.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
| Category | Claude Opus 4 | Claude Opus 4.6 |
|---|---|---|
| General LLM | #131 · #131 in General LLM Margin 69.68085106382979 LMArena leaderboard dataset · Oct 13, 2026 | #4 · Near-SOTA · General LLM Margin 2.1276595744680833 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #125 · Was SOTA · Reasoning Margin 67.02127659574468 LMArena leaderboard dataset · Oct 13, 2026 | #2 · Near-SOTA · Reasoning Margin 1.5957446808510696 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #29 · #29 in Math Margin 62.22222222222222 Epoch AI benchmarking hub · May 22, 2025 | #11 · #11 in Math Margin 22.22222222222223 Epoch AI benchmarking hub · Feb 5, 2026 |
| Science | #91 · #91 in Science Margin — Epoch AI benchmarking hub · May 22, 2025 | #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 | #86 · #86 in Long context Margin 45.744680851063826 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 |
| Abstraction (ARC) | #69 · #69 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 22, 2025 | — |
Claude Opus 4: price per 1M tokens is unset in the catalog.
Claude Opus 4.6: $10 per 1M blended tokens.
Claude Opus 4: closed weights.
Claude Opus 4.6: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in General LLM at #4 against #131.
Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in Reasoning at #2 against #125.
Math: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in Math at #11 against #29.
Science: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in Science at #32 against #91.
Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in Long context at #2 against #86.
Claude Opus 4 · Claude Opus 4.6
Claude Opus 4 or Claude Opus 4.6?
As of Oct 15, 2026, Claude Opus 4 leads Claude Opus 4.6 in 0 of 5 shared categories.
Claude Opus 4 or Claude Opus 4.6 for General LLM?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in General LLM at #4 against #131.
Claude Opus 4 or Claude Opus 4.6 for Reasoning?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in Reasoning at #2 against #125.
Claude Opus 4 or Claude Opus 4.6 for Math?
As of Oct 15, 2026, Claude Opus 4.6 leads Claude Opus 4 in Math at #11 against #29.