Claude Opus 4.6 vs Grok 4.3
As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
Grok 4.3
#32 Best current rank: #32 in Vision, as of Oct 15, 2026.
| Category | Claude Opus 4.6 | Grok 4.3 |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.1276595744680833 LMArena leaderboard dataset · Oct 13, 2026 | #85 · #85 in General LLM Margin 45.212765957446805 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 1.5957446808510696 LMArena leaderboard dataset · Oct 13, 2026 | #96 · #96 in Reasoning Margin 51.59574468085106 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 | #41 · #41 in Science Margin — Epoch AI benchmarking hub · Apr 17, 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 | #95 · #95 in Coding › Web dev Margin 75.2 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #2 · Near-SOTA · Long context Margin 0.5319148936170421 LMArena leaderboard dataset · Oct 13, 2026 | #94 · #94 in Long context Margin 50 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #32 · #32 in Vision Margin 97.36842105263158 Epoch AI benchmarking hub · Apr 17, 2026 |
| Factuality | #3 · Near-SOTA · Factuality Margin 2.3255813953488342 LMArena leaderboard dataset · Oct 13, 2026 | #111 · #111 in Factuality Margin 65.11627906976744 LMArena leaderboard dataset · Oct 13, 2026 |
Claude Opus 4.6: $10 per 1M blended tokens.
Grok 4.3: $1.5625000000000002 per 1M blended tokens.
Claude Opus 4.6: closed weights.
Grok 4.3: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in General LLM at #4 against #85.
Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in Reasoning at #2 against #96.
Science: As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in Science at #32 against #41.
Coding › Web dev: As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in Coding › Web dev at #37 against #95.
Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in Long context at #2 against #94.
Factuality: As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in Factuality at #3 against #111.
Claude Opus 4.6 or Grok 4.3?
As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Opus 4.6 or Grok 4.3 for General LLM?
As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in General LLM at #4 against #85.
Claude Opus 4.6 or Grok 4.3 for Reasoning?
As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in Reasoning at #2 against #96.
Claude Opus 4.6 or Grok 4.3 for Science?
As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.3 in Science at #32 against #41.