Claude Opus 4.8 vs Grok 4.3
As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Vision, and Factuality.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
Grok 4.3
#32 Best current rank: #32 in Vision, as of Oct 14, 2026.
| Category | Claude Opus 4.8 | Grok 4.3 |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #67 · #67 in General LLM Margin 45.57823129251701 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #75 · #75 in Reasoning Margin 52.054794520547944 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 | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | #41 · #41 in Science Margin — Epoch AI benchmarking hub · Apr 17, 2026 |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #12 · #12 in Coding › Agentic Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #33 · Was SOTA · Coding › Web dev Margin 29.90654205607477 LMArena leaderboard dataset · Oct 13, 2026 | #85 · #85 in Coding › Web dev Margin 78.50467289719626 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #77 · #77 in Long context Margin 52.38095238095237 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | #32 · #32 in Vision Margin 97.36842105263158 Epoch AI benchmarking hub · Apr 17, 2026 |
| Factuality | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 | #87 · #87 in Factuality Margin 65.67164179104478 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | — |
Claude Opus 4.8: $10 per 1M blended tokens.
Grok 4.3: $1.5625000000000002 per 1M blended tokens.
Claude Opus 4.8: closed weights.
Grok 4.3: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in General LLM at #20 against #67.
Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in Reasoning at #10 against #75.
Science: As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in Science at #27 against #41.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in Coding › Web dev at #33 against #85.
Long context: As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in Long context at #10 against #77.
Vision: As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in Vision at #13 against #32.
Factuality: As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in Factuality at #21 against #87.
Claude Opus 4.8 or Grok 4.3?
As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in 7 of 7 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, Vision, and Factuality.
Claude Opus 4.8 or Grok 4.3 for General LLM?
As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in General LLM at #20 against #67.
Claude Opus 4.8 or Grok 4.3 for Reasoning?
As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in Reasoning at #10 against #75.
Claude Opus 4.8 or Grok 4.3 for Science?
As of Oct 14, 2026, Claude Opus 4.8 leads Grok 4.3 in Science at #27 against #41.