Claude Opus 4.6 vs Claude Opus 4.8
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Opus 4.8 in 4 of 6 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
| Category | Claude Opus 4.6 | Claude Opus 4.8 |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.7210884353741562 LMArena leaderboard dataset · Oct 13, 2026 | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 2.0547945205479436 LMArena leaderboard dataset · Oct 13, 2026 | #10 · #10 in Reasoning Margin 7.534246575342465 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 | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 |
| Coding | #— · Not enough data Margin — Epoch AI benchmarking hub · Feb 5, 2026 | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #12 · #12 in Coding › Agentic Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #35 · Was SOTA · Coding › Web dev Margin 31.775700934579433 LMArena leaderboard dataset · Oct 13, 2026 | #33 · Was SOTA · Coding › Web dev Margin 29.90654205607477 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #2 · Near-SOTA · Long context Margin 0.6802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 |
| Factuality | #3 · Near-SOTA · Factuality Margin 2.9850746268656536 LMArena leaderboard dataset · Oct 13, 2026 | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 |
Claude Opus 4.6: $10 per 1M blended tokens.
Claude Opus 4.8: $10 per 1M blended tokens.
Claude Opus 4.6: closed weights.
Claude Opus 4.8: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Opus 4.8 in General LLM at #4 against #20.
Reasoning: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Opus 4.8 in Reasoning at #2 against #10.
Science: As of Oct 14, 2026, Claude Opus 4.8 leads Claude Opus 4.6 in Science at #27 against #32.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 4.8 leads Claude Opus 4.6 in Coding › Web dev at #33 against #35.
Long context: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Opus 4.8 in Long context at #2 against #10.
Factuality: As of Oct 14, 2026, Claude Opus 4.6 leads Claude Opus 4.8 in Factuality at #3 against #21.
Claude Opus 4.6 · Claude Opus 4.8
Claude Opus 4.6 or Claude Opus 4.8?
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Opus 4.8 in 4 of 6 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.6 or Claude Opus 4.8 for General LLM?
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Opus 4.8 in General LLM at #4 against #20.
Claude Opus 4.6 or Claude Opus 4.8 for Reasoning?
As of Oct 14, 2026, Claude Opus 4.6 leads Claude Opus 4.8 in Reasoning at #2 against #10.
Claude Opus 4.6 or Claude Opus 4.8 for Science?
As of Oct 14, 2026, Claude Opus 4.8 leads Claude Opus 4.6 in Science at #27 against #32.