Claude Opus 5.5 vs Grok 4.1
As of Oct 15, 2026, Claude Opus 5.5 leads Grok 4.1 in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 5.5
Yes. SOTA in Reasoning (tied), Coding (tied), Coding › Agentic (tied), Coding › Web dev, Long context (tied), and Factuality (tied).
Grok 4.1
#53 Best current rank: #53 in General LLM, as of Oct 15, 2026.
| Category | Claude Opus 5.5 | Grok 4.1 |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.0638297872340416 LMArena leaderboard dataset · Oct 13, 2026 | #53 · #53 in General LLM Margin 28.191489361702125 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #68 · #68 in Reasoning Margin 36.702127659574465 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 | — |
| 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 | #82 · #82 in Long context Margin 43.61702127659574 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #4 · Near-SOTA · Vision Margin 13.15789473684211 Epoch AI benchmarking hub · Sep 22, 2026 | — |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #103 · #103 in Factuality Margin 60.46511627906977 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 | — |
Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.
Grok 4.1: price per 1M tokens is unset in the catalog.
Claude Opus 5.5: closed weights.
Grok 4.1: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 5.5 leads Grok 4.1 in General LLM at #2 against #53.
Reasoning: As of Oct 15, 2026, Claude Opus 5.5 leads Grok 4.1 in Reasoning at #1 against #68.
Long context: As of Oct 15, 2026, Claude Opus 5.5 leads Grok 4.1 in Long context at #1 against #82.
Factuality: As of Oct 15, 2026, Claude Opus 5.5 leads Grok 4.1 in Factuality at #1 against #103.
Claude Opus 5.5 or Grok 4.1?
As of Oct 15, 2026, Claude Opus 5.5 leads Grok 4.1 in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Factuality.
Claude Opus 5.5 or Grok 4.1 for General LLM?
As of Oct 15, 2026, Claude Opus 5.5 leads Grok 4.1 in General LLM at #2 against #53.
Claude Opus 5.5 or Grok 4.1 for Reasoning?
As of Oct 15, 2026, Claude Opus 5.5 leads Grok 4.1 in Reasoning at #1 against #68.
Claude Opus 5.5 or Grok 4.1 for Long context?
As of Oct 15, 2026, Claude Opus 5.5 leads Grok 4.1 in Long context at #1 against #82.