Claude Opus 5 vs Claude Sonnet 4.6
As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in 8 of 8 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
Claude Sonnet 4.6
It used to be. Was SOTA in Long context.
| Category | Claude Opus 5 | Claude Sonnet 4.6 |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #32 · #32 in General LLM Margin 21.768707482993193 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 6.849315068493155 LMArena leaderboard dataset · Oct 13, 2026 | #20 · #20 in Reasoning Margin 14.38356164383562 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #50 · #50 in Science Margin — Epoch AI benchmarking hub · Feb 17, 2026 |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Feb 17, 2026 |
| Coding › Agentic | #4 · #4 in Coding › Agentic Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #6 · Was SOTA · Coding › Web dev Margin 4.672897196261687 LMArena leaderboard dataset · Oct 13, 2026 | #41 · #41 in Coding › Web dev Margin 37.38317757009346 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 | #20 · Was SOTA · Long context Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 | #23 · Was SOTA · Vision Margin 63.1578947368421 Epoch AI benchmarking hub · Feb 17, 2026 |
| Factuality | #4 · Near-SOTA · Factuality Margin 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 | #34 · #34 in Factuality Margin 26.11940298507463 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #23 · #23 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 17, 2026 |
Claude Opus 5: $10 per 1M blended tokens.
Claude Sonnet 4.6: $6 per 1M blended tokens.
Claude Opus 5: closed weights.
Claude Sonnet 4.6: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in General LLM at #11 against #32.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in Reasoning at #9 against #20.
Science: As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in Science at #12 against #50.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in Coding › Web dev at #6 against #41.
Long context: As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in Long context at #9 against #20.
Vision: As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in Vision at #12 against #23.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in Factuality at #4 against #34.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in Abstraction (ARC) at #3 against #23.
Claude Opus 5 · Claude Sonnet 4.6
Claude Opus 5 or Claude Sonnet 4.6?
As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in 8 of 8 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Opus 5 or Claude Sonnet 4.6 for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in General LLM at #11 against #32.
Claude Opus 5 or Claude Sonnet 4.6 for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in Reasoning at #9 against #20.
Claude Opus 5 or Claude Sonnet 4.6 for Science?
As of Oct 14, 2026, Claude Opus 5 leads Claude Sonnet 4.6 in Science at #12 against #50.