Gemini 3.1 Pro Preview vs Gemini 3.5 Flash
As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in 6 of 8 shared categories: General LLM, Reasoning, Science, Long context, Vision, and Abstraction (ARC).
Gemini 3.1 Pro Preview
Yes. Yes on Math (best per dollar). Not the overall leader.
Gemini 3.5 Flash
#12 Best recorded rank: #12 in Abstraction (ARC), as of Oct 14, 2026.
| Category | Gemini 3.1 Pro Preview | Gemini 3.5 Flash |
|---|---|---|
| General LLM | #15 · Was SOTA · General LLM Margin 10.204081632653057 LMArena leaderboard dataset · Oct 13, 2026 | #24 · #24 in General LLM Margin 16.326530612244895 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #14 · Was SOTA · Reasoning Margin 10.273972602739732 LMArena leaderboard dataset · Oct 13, 2026 | #32 · #32 in Reasoning Margin 22.602739726027394 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #3 · Near-SOTA · Math Margin 4.444444444444443 Epoch AI benchmarking hub · Feb 19, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #7 · #7 in Science Margin — Epoch AI benchmarking hub · Feb 19, 2026 | #18 · #18 in Science Margin — Epoch AI benchmarking hub · May 19, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · May 19, 2026 |
| Coding › Web dev | #58 · #58 in Coding › Web dev Margin 53.271028037383175 LMArena leaderboard dataset · Oct 13, 2026 | #48 · #48 in Coding › Web dev Margin 43.925233644859816 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #12 · Was SOTA · Long context Margin 8.163265306122454 LMArena leaderboard dataset · Oct 13, 2026 | #28 · #28 in Long context Margin 19.04761904761905 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #25 · Was SOTA · Vision Margin 68.42105263157896 Epoch AI benchmarking hub · Feb 19, 2026 | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · May 19, 2026 |
| Factuality | #18 · #18 in Factuality Margin 14.179104477611943 LMArena leaderboard dataset · Oct 13, 2026 | #13 · #13 in Factuality Margin 10.447761194029852 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #2 · #2 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 19, 2026 | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 19, 2026 |
Gemini 3.1 Pro Preview: $4.5 per 1M blended tokens.
Gemini 3.5 Flash: $3.375 per 1M blended tokens.
Gemini 3.1 Pro Preview: closed weights.
Gemini 3.5 Flash: closed weights.
General LLM: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in General LLM at #15 against #24.
Reasoning: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in Reasoning at #14 against #32.
Science: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in Science at #7 against #18.
Coding › Web dev: As of Oct 14, 2026, Gemini 3.5 Flash leads Gemini 3.1 Pro Preview in Coding › Web dev at #48 against #58.
Long context: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in Long context at #12 against #28.
Vision: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in Vision at #25 against #29.
Factuality: As of Oct 14, 2026, Gemini 3.5 Flash leads Gemini 3.1 Pro Preview in Factuality at #13 against #18.
Abstraction (ARC): As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in Abstraction (ARC) at #2 against #12.
Gemini 3.1 Pro Preview · Gemini 3.5 Flash
Gemini 3.1 Pro Preview or Gemini 3.5 Flash?
As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in 6 of 8 shared categories: General LLM, Reasoning, Science, Long context, Vision, and Abstraction (ARC).
Gemini 3.1 Pro Preview or Gemini 3.5 Flash for General LLM?
As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in General LLM at #15 against #24.
Gemini 3.1 Pro Preview or Gemini 3.5 Flash for Reasoning?
As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in Reasoning at #14 against #32.
Gemini 3.1 Pro Preview or Gemini 3.5 Flash for Science?
As of Oct 14, 2026, Gemini 3.1 Pro Preview leads Gemini 3.5 Flash in Science at #7 against #18.