Gemini 3.1 Pro Preview vs GPT-5.5 Instant
As of Oct 14, 2026, Gemini 3.1 Pro Preview leads GPT-5.5 Instant in 5 of 5 shared categories: General LLM, Reasoning, Science, Long context, and Factuality.
Gemini 3.1 Pro Preview
Yes. Yes on Math (best per dollar). Not the overall leader.
GPT-5.5 Instant
#31 Best current rank: #31 in General LLM, as of Oct 14, 2026.
| Category | Gemini 3.1 Pro Preview | GPT-5.5 Instant |
|---|---|---|
| General LLM | #15 · Was SOTA · General LLM Margin 10.204081632653057 LMArena leaderboard dataset · Oct 13, 2026 | #31 · #31 in General LLM Margin 21.088435374149654 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #14 · Was SOTA · Reasoning Margin 10.273972602739732 LMArena leaderboard dataset · Oct 13, 2026 | #33 · #33 in Reasoning Margin 23.28767123287672 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 | #65 · #65 in Science Margin — Epoch AI benchmarking hub · May 5, 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 · #58 in Coding › Web dev Margin 53.271028037383175 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #12 · Was SOTA · Long context Margin 8.163265306122454 LMArena leaderboard dataset · Oct 13, 2026 | #39 · #39 in Long context Margin 26.530612244897952 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #25 · Was SOTA · Vision Margin 68.42105263157896 Epoch AI benchmarking hub · Feb 19, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #18 · #18 in Factuality Margin 14.179104477611943 LMArena leaderboard dataset · Oct 13, 2026 | #64 · #64 in Factuality Margin 48.507462686567166 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #2 · #2 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Feb 19, 2026 | — |
Gemini 3.1 Pro Preview: $4.5 per 1M blended tokens.
GPT-5.5 Instant: price per 1M tokens is unset in the catalog.
Gemini 3.1 Pro Preview: closed weights.
GPT-5.5 Instant: closed weights.
General LLM: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads GPT-5.5 Instant in General LLM at #15 against #31.
Reasoning: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads GPT-5.5 Instant in Reasoning at #14 against #33.
Science: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads GPT-5.5 Instant in Science at #7 against #65.
Long context: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads GPT-5.5 Instant in Long context at #12 against #39.
Factuality: As of Oct 14, 2026, Gemini 3.1 Pro Preview leads GPT-5.5 Instant in Factuality at #18 against #64.
Gemini 3.1 Pro Preview · GPT-5.5 Instant
Gemini 3.1 Pro Preview or GPT-5.5 Instant?
As of Oct 14, 2026, Gemini 3.1 Pro Preview leads GPT-5.5 Instant in 5 of 5 shared categories: General LLM, Reasoning, Science, Long context, and Factuality.
Gemini 3.1 Pro Preview or GPT-5.5 Instant for General LLM?
As of Oct 14, 2026, Gemini 3.1 Pro Preview leads GPT-5.5 Instant in General LLM at #15 against #31.
Gemini 3.1 Pro Preview or GPT-5.5 Instant for Reasoning?
As of Oct 14, 2026, Gemini 3.1 Pro Preview leads GPT-5.5 Instant in Reasoning at #14 against #33.
Gemini 3.1 Pro Preview or GPT-5.5 Instant for Science?
As of Oct 14, 2026, Gemini 3.1 Pro Preview leads GPT-5.5 Instant in Science at #7 against #65.