Claude Opus 4.5 vs Grok 4.6
As of Oct 15, 2026, Claude Opus 4.5 leads Grok 4.6 in 4 of 7 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.5
It used to be. Was SOTA in Reasoning.
Grok 4.6
#10 Best recorded rank: #10 in Science, as of Oct 15, 2026.
| Category | Claude Opus 4.5 | Grok 4.6 |
|---|---|---|
| General LLM | #41 · #41 in General LLM Margin 21.808510638297875 LMArena leaderboard dataset · Oct 13, 2026 | #61 · #61 in General LLM Margin 32.44680851063829 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #30 · Was SOTA · Reasoning Margin 16.489361702127653 LMArena leaderboard dataset · Oct 13, 2026 | #55 · #55 in Reasoning Margin 29.787234042553195 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #16 · #16 in Math Margin 33.33333333333333 Epoch AI benchmarking hub · Nov 24, 2025 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #68 · #68 in Science Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #10 · #10 in Science Margin — Epoch AI benchmarking hub · Aug 12, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #14 · #14 in Coding Margin 68.18181818181819 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | — | #14 · #14 in Coding › Agentic Margin 68.18181818181819 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #58 · Was SOTA · Coding › Web dev Margin 45.6 LMArena leaderboard dataset · Oct 13, 2026 | #22 · #22 in Coding › Web dev Margin 16.799999999999997 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #20 · Was SOTA · Long context Margin 10.63829787234043 LMArena leaderboard dataset · Oct 13, 2026 | #48 · #48 in Long context Margin 25.531914893617028 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #24 · #24 in Vision Margin 65.78947368421052 Epoch AI benchmarking hub · Aug 12, 2026 |
| Factuality | #40 · #40 in Factuality Margin 23.837209302325576 LMArena leaderboard dataset · Oct 13, 2026 | #62 · #62 in Factuality Margin 36.627906976744185 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #49 · #49 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #20 · #20 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 12, 2026 |
Claude Opus 4.5: $10 per 1M blended tokens.
Grok 4.6: $3 per 1M blended tokens.
Claude Opus 4.5: closed weights.
Grok 4.6: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.5 leads Grok 4.6 in General LLM at #41 against #61.
Reasoning: As of Oct 15, 2026, Claude Opus 4.5 leads Grok 4.6 in Reasoning at #30 against #55.
Science: As of Oct 15, 2026, Grok 4.6 leads Claude Opus 4.5 in Science at #10 against #68.
Coding › Web dev: As of Oct 15, 2026, Grok 4.6 leads Claude Opus 4.5 in Coding › Web dev at #22 against #58.
Long context: As of Oct 15, 2026, Claude Opus 4.5 leads Grok 4.6 in Long context at #20 against #48.
Factuality: As of Oct 15, 2026, Claude Opus 4.5 leads Grok 4.6 in Factuality at #40 against #62.
Abstraction (ARC): As of Oct 15, 2026, Grok 4.6 leads Claude Opus 4.5 in Abstraction (ARC) at #20 against #49.
Claude Opus 4.5 or Grok 4.6?
As of Oct 15, 2026, Claude Opus 4.5 leads Grok 4.6 in 4 of 7 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 4.5 or Grok 4.6 for General LLM?
As of Oct 15, 2026, Claude Opus 4.5 leads Grok 4.6 in General LLM at #41 against #61.
Claude Opus 4.5 or Grok 4.6 for Reasoning?
As of Oct 15, 2026, Claude Opus 4.5 leads Grok 4.6 in Reasoning at #30 against #55.
Claude Opus 4.5 or Grok 4.6 for Science?
As of Oct 15, 2026, Grok 4.6 leads Claude Opus 4.5 in Science at #10 against #68.