Claude Opus 5.5 vs Grok 4 0709
As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 5.5
Yes. SOTA in co-SOTA in Reasoning, co-SOTA in Coding, co-SOTA in Coding › Agentic, Coding › Web dev, co-SOTA in Long context and co-SOTA in Factuality.
Grok 4 0709
#33 Best recorded rank: #33 in Abstraction (ARC), as of Oct 14, 2026.
| Category | Claude Opus 5.5 | Grok 4 0709 |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.3605442176870781 LMArena leaderboard dataset · Oct 13, 2026 | #106 · #106 in General LLM Margin 72.10884353741497 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #110 · #110 in Reasoning Margin 76.02739726027397 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 | #31 · #31 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 | #51 · #51 in Science Margin — Epoch AI benchmarking hub · Jul 9, 2025 |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #1 · SOTA · Coding › Web dev Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #1 · Co-SOTA · Long context Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #106 · #106 in Long context Margin 72.10884353741497 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #4 · Near-SOTA · Vision Margin 13.15789473684211 Epoch AI benchmarking hub · Sep 22, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #96 · #96 in Factuality Margin 72.38805970149254 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 | #33 · #33 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 9, 2025 |
Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.
Grok 4 0709: price per 1M tokens is unset in the catalog.
Claude Opus 5.5: closed weights.
Grok 4 0709: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in General LLM at #2 against #106.
Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in Reasoning at #1 against #110.
Science: As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in Science at #31 against #51.
Long context: As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in Long context at #1 against #106.
Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in Factuality at #1 against #96.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in Abstraction (ARC) at #1 against #33.
Claude Opus 5.5 or Grok 4 0709?
As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).
Claude Opus 5.5 or Grok 4 0709 for General LLM?
As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in General LLM at #2 against #106.
Claude Opus 5.5 or Grok 4 0709 for Reasoning?
As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in Reasoning at #1 against #110.
Claude Opus 5.5 or Grok 4 0709 for Science?
As of Oct 14, 2026, Claude Opus 5.5 leads Grok 4 0709 in Science at #31 against #51.