Claude Opus 5 vs Grok 4.5
As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in 10 of 10 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Opus 5
Close. Near-SOTA in Factuality, rank #4.
Grok 4.5
#14 Best recorded rank: #14 in Science, as of Oct 14, 2026.
| Category | Claude Opus 5 | Grok 4.5 |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #36 · #36 in General LLM Margin 24.48979591836735 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 6.849315068493155 LMArena leaderboard dataset · Oct 13, 2026 | #37 · #37 in Reasoning Margin 26.027397260273972 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 | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #14 · #14 in Science Margin — Epoch AI benchmarking hub · Jul 8, 2026 |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #19 · #19 in Coding Margin 95.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #4 · #4 in Coding › Agentic Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #19 · #19 in Coding › Agentic Margin 95.45454545454545 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #6 · Was SOTA · Coding › Web dev Margin 4.672897196261687 LMArena leaderboard dataset · Oct 13, 2026 | #34 · #34 in Coding › Web dev Margin 30.8411214953271 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 | #35 · #35 in Long context Margin 23.80952380952381 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Jul 8, 2026 |
| Factuality | #4 · Near-SOTA · Factuality Margin 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 | #26 · #26 in Factuality Margin 20.14925373134328 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #21 · #21 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 8, 2026 |
Claude Opus 5: $10 per 1M blended tokens.
Grok 4.5: $3 per 1M blended tokens.
Claude Opus 5: closed weights.
Grok 4.5: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in General LLM at #11 against #36.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Reasoning at #9 against #37.
Science: As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Science at #12 against #14.
Coding: As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Coding at #4 against #19.
Coding › Agentic: As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Coding › Agentic at #4 against #19.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Coding › Web dev at #6 against #34.
Long context: As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Long context at #9 against #35.
Vision: As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Vision at #12 against #29.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Factuality at #4 against #26.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Abstraction (ARC) at #3 against #21.
Claude Opus 5 or Grok 4.5?
As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in 10 of 10 shared categories: General LLM, Reasoning, Science, Coding, Coding › Agentic, Coding › Web dev, Long context, Vision, Factuality, and Abstraction (ARC).
Claude Opus 5 or Grok 4.5 for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in General LLM at #11 against #36.
Claude Opus 5 or Grok 4.5 for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Reasoning at #9 against #37.
Claude Opus 5 or Grok 4.5 for Science?
As of Oct 14, 2026, Claude Opus 5 leads Grok 4.5 in Science at #12 against #14.