Gemini 3.8 Flash vs GPT-5.1
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in 8 of 8 shared categories: General LLM, Reasoning, Math, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Gemini 3.8 Flash
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
GPT-5.1
#18 Best current rank: #18 in Math, as of Oct 14, 2026.
| Category | Gemini 3.8 Flash | GPT-5.1 |
|---|---|---|
| General LLM | #7 · Was SOTA · General LLM Margin 4.761904761904759 LMArena leaderboard dataset · Oct 13, 2026 | #47 · #47 in General LLM Margin 31.972789115646265 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #6 · #6 in Reasoning Margin 4.794520547945211 LMArena leaderboard dataset · Oct 13, 2026 | #48 · #48 in Reasoning Margin 33.56164383561644 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #5 · #5 in Math Margin 8.888888888888886 Epoch AI benchmarking hub · Sep 2, 2026 | #18 · #18 in Math Margin 37.77777777777778 Epoch AI benchmarking hub · Nov 13, 2025 |
| Science | #4 · #4 in Science Margin — Epoch AI benchmarking hub · Sep 2, 2026 | #48 · #48 in Science Margin — Epoch AI benchmarking hub · Nov 13, 2025 |
| Coding | #15 · #15 in Coding Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Nov 13, 2025 |
| Coding › Agentic | #15 · #15 in Coding › Agentic Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #27 · #27 in Coding › Web dev Margin 24.29906542056075 LMArena leaderboard dataset · Oct 13, 2026 | #75 · #75 in Coding › Web dev Margin 69.1588785046729 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #5 · Near-SOTA · Long context Margin 3.401360544217681 LMArena leaderboard dataset · Oct 13, 2026 | #54 · #54 in Long context Margin 36.73469387755103 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #15 · #15 in Vision Margin 42.10526315789474 Epoch AI benchmarking hub · Sep 2, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 |
| Factuality | #17 · #17 in Factuality Margin 13.43283582089552 LMArena leaderboard dataset · Oct 13, 2026 | #37 · #37 in Factuality Margin 28.358208955223887 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 2, 2026 | #31 · #31 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Nov 13, 2025 |
Gemini 3.8 Flash: $1.5 per 1M blended tokens.
GPT-5.1: $3.4375000000000004 per 1M blended tokens.
Gemini 3.8 Flash: closed weights.
GPT-5.1: closed weights.
General LLM: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in General LLM at #7 against #47.
Reasoning: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in Reasoning at #6 against #48.
Math: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in Math at #5 against #18.
Science: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in Science at #4 against #48.
Coding › Web dev: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in Coding › Web dev at #27 against #75.
Long context: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in Long context at #5 against #54.
Factuality: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in Factuality at #17 against #37.
Abstraction (ARC): As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in Abstraction (ARC) at #1 against #31.
Gemini 3.8 Flash or GPT-5.1?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in 8 of 8 shared categories: General LLM, Reasoning, Math, Science, Coding › Web dev, Long context, Factuality, and Abstraction (ARC).
Gemini 3.8 Flash or GPT-5.1 for General LLM?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in General LLM at #7 against #47.
Gemini 3.8 Flash or GPT-5.1 for Reasoning?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in Reasoning at #6 against #48.
Gemini 3.8 Flash or GPT-5.1 for Math?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5.1 in Math at #5 against #18.