Claude Opus 4.6 vs Gemini 3.6 Flash
As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 3.6 Flash in 5 of 6 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 4.6
Close. Near-SOTA in Reasoning, rank #2.
Gemini 3.6 Flash
#9 Best recorded rank: #9 in Science, as of Oct 15, 2026.
| Category | Claude Opus 4.6 | Gemini 3.6 Flash |
|---|---|---|
| General LLM | #4 · Near-SOTA · General LLM Margin 2.1276595744680833 LMArena leaderboard dataset · Oct 13, 2026 | #19 · #19 in General LLM Margin 10.106382978723403 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #2 · Near-SOTA · Reasoning Margin 1.5957446808510696 LMArena leaderboard dataset · Oct 13, 2026 | #25 · #25 in Reasoning Margin 13.829787234042556 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #11 · #11 in Math Margin 22.22222222222223 Epoch AI benchmarking hub · Feb 5, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #32 · #32 in Science Margin — Epoch AI benchmarking hub · Feb 5, 2026 | #9 · #9 in Science Margin — Epoch AI benchmarking hub · Jul 21, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #37 · Was SOTA · Coding › Web dev Margin 28.799999999999997 LMArena leaderboard dataset · Oct 13, 2026 | #41 · #41 in Coding › Web dev Margin 32 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #2 · Near-SOTA · Long context Margin 0.5319148936170421 LMArena leaderboard dataset · Oct 13, 2026 | #30 · #30 in Long context Margin 15.957446808510639 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · Jul 21, 2026 |
| Factuality | #3 · Near-SOTA · Factuality Margin 2.3255813953488342 LMArena leaderboard dataset · Oct 13, 2026 | #23 · #23 in Factuality Margin 13.95348837209302 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #13 · #13 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 21, 2026 |
Claude Opus 4.6: $10 per 1M blended tokens.
Gemini 3.6 Flash: $1.5 per 1M blended tokens.
Claude Opus 4.6: closed weights.
Gemini 3.6 Flash: closed weights.
General LLM: As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 3.6 Flash in General LLM at #4 against #19.
Reasoning: As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 3.6 Flash in Reasoning at #2 against #25.
Science: As of Oct 15, 2026, Gemini 3.6 Flash leads Claude Opus 4.6 in Science at #9 against #32.
Coding › Web dev: As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 3.6 Flash in Coding › Web dev at #37 against #41.
Long context: As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 3.6 Flash in Long context at #2 against #30.
Factuality: As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 3.6 Flash in Factuality at #3 against #23.
Claude Opus 4.6 · Gemini 3.6 Flash
Claude Opus 4.6 or Gemini 3.6 Flash?
As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 3.6 Flash in 5 of 6 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.
Claude Opus 4.6 or Gemini 3.6 Flash for General LLM?
As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 3.6 Flash in General LLM at #4 against #19.
Claude Opus 4.6 or Gemini 3.6 Flash for Reasoning?
As of Oct 15, 2026, Claude Opus 4.6 leads Gemini 3.6 Flash in Reasoning at #2 against #25.
Claude Opus 4.6 or Gemini 3.6 Flash for Science?
As of Oct 15, 2026, Gemini 3.6 Flash leads Claude Opus 4.6 in Science at #9 against #32.