Claude Opus 4.5 vs Gemini 3.1 Pro Preview
As of Oct 15, 2026, Claude Opus 4.5 leads Gemini 3.1 Pro Preview in 1 of 8 shared categories: Coding › Web dev.
Claude Opus 4.5
It used to be. Was SOTA in Reasoning.
Gemini 3.1 Pro Preview
Yes. Yes on Math (best per dollar). Not the overall leader.
| Category | Claude Opus 4.5 | Gemini 3.1 Pro Preview |
|---|---|---|
| General LLM | #41 · #41 in General LLM Margin 21.808510638297875 LMArena leaderboard dataset · Oct 13, 2026 | #15 · Was SOTA · General LLM Margin 7.9787234042553195 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #30 · Was SOTA · Reasoning Margin 16.489361702127653 LMArena leaderboard dataset · Oct 13, 2026 | #14 · Was SOTA · Reasoning Margin 7.9787234042553195 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #16 · #16 in Math Margin 33.33333333333333 Epoch AI benchmarking hub · Nov 24, 2025 | #3 · Near-SOTA · Math Margin 4.444444444444443 Epoch AI benchmarking hub · Feb 19, 2026 |
| Science | #68 · #68 in Science Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #7 · #7 in Science Margin — Epoch AI benchmarking hub · Feb 19, 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 | #58 · Was SOTA · Coding › Web dev Margin 45.6 LMArena leaderboard dataset · Oct 13, 2026 | #63 · #63 in Coding › Web dev Margin 49.6 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #20 · Was SOTA · Long context Margin 10.63829787234043 LMArena leaderboard dataset · Oct 13, 2026 | #12 · Was SOTA · Long context Margin 6.382978723404236 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | — | #25 · Was SOTA · Vision Margin 68.42105263157896 Epoch AI benchmarking hub · Feb 19, 2026 |
| Factuality | #40 · #40 in Factuality Margin 23.837209302325576 LMArena leaderboard dataset · Oct 13, 2026 | #21 · #21 in Factuality Margin 12.79069767441861 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #49 · #49 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 24, 2025 | #2 · #2 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 19, 2026 |
Claude Opus 4.5: $10 per 1M blended tokens.
Gemini 3.1 Pro Preview: $4.5 per 1M blended tokens.
Claude Opus 4.5: closed weights.
Gemini 3.1 Pro Preview: closed weights.
General LLM: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4.5 in General LLM at #15 against #41.
Reasoning: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4.5 in Reasoning at #14 against #30.
Math: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4.5 in Math at #3 against #16.
Science: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4.5 in Science at #7 against #68.
Coding › Web dev: As of Oct 15, 2026, Claude Opus 4.5 leads Gemini 3.1 Pro Preview in Coding › Web dev at #58 against #63.
Long context: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4.5 in Long context at #12 against #20.
Factuality: As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4.5 in Factuality at #21 against #40.
Abstraction (ARC): As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4.5 in Abstraction (ARC) at #2 against #49.
Claude Opus 4.5 · Gemini 3.1 Pro Preview
Claude Opus 4.5 or Gemini 3.1 Pro Preview?
As of Oct 15, 2026, Claude Opus 4.5 leads Gemini 3.1 Pro Preview in 1 of 8 shared categories: Coding › Web dev.
Claude Opus 4.5 or Gemini 3.1 Pro Preview for General LLM?
As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4.5 in General LLM at #15 against #41.
Claude Opus 4.5 or Gemini 3.1 Pro Preview for Reasoning?
As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4.5 in Reasoning at #14 against #30.
Claude Opus 4.5 or Gemini 3.1 Pro Preview for Math?
As of Oct 15, 2026, Gemini 3.1 Pro Preview leads Claude Opus 4.5 in Math at #3 against #16.