Claude Opus 4.6 vs Grok 4.5
As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.5 in 4 of 6 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
Grok 4.5
#14 Best recorded rank: #14 in Science, as of Oct 15, 2026.
| Category | Claude Opus 4.6 | Grok 4.5 |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.1276595744680833 LMArena leaderboard dataset · Oct 13, 2026 | #45 · #45 in General LLM Margin 23.93617021276596 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 1.5957446808510696 LMArena leaderboard dataset · Oct 13, 2026 | #44 · #44 in Reasoning Margin 23.93617021276596 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 | #14 · #14 in Science Margin — Epoch AI benchmarking hub · Jul 8, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #19 · #19 in Coding Margin 95.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #19 · #19 in Coding › Agentic Margin 95.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #37 · Was SOTA · Coding › Web dev Margin 28.799999999999997 LMArena leaderboard dataset · Oct 13, 2026 | #36 · #36 in Coding › Web dev Margin 28 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #2 · Near-SOTA · Long context Margin 0.5319148936170421 LMArena leaderboard dataset · Oct 13, 2026 | #41 · #41 in Long context Margin 21.808510638297875 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Jul 8, 2026 |
| Factuality | #3 · Near-SOTA · Factuality Margin 2.3255813953488342 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in Factuality Margin 18.023255813953483 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #21 · #21 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 8, 2026 |
Claude Opus 4.6: $10 per 1M blended tokens.
Grok 4.5: $3 per 1M blended tokens.
Claude Opus 4.6: closed weights.
Grok 4.5: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.5 in General LLM at #4 against #45.
Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.5 in Reasoning at #2 against #44.
Science: As of Oct 15, 2026, Grok 4.5 leads Claude Opus 4.6 in Science at #14 against #32.
Coding › Web dev: As of Oct 15, 2026, Grok 4.5 leads Claude Opus 4.6 in Coding › Web dev at #36 against #37.
Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.5 in Long context at #2 against #41.
Factuality: As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.5 in Factuality at #3 against #30.
Claude Opus 4.6 or Grok 4.5?
As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.5 in 4 of 6 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.6 or Grok 4.5 for General LLM?
As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.5 in General LLM at #4 against #45.
Claude Opus 4.6 or Grok 4.5 for Reasoning?
As of Oct 15, 2026, Claude Opus 4.6 leads Grok 4.5 in Reasoning at #2 against #44.
Claude Opus 4.6 or Grok 4.5 for Science?
As of Oct 15, 2026, Grok 4.5 leads Claude Opus 4.6 in Science at #14 against #32.