Gemini 3.8 Flash vs GPT-5
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 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
It used to be. Was SOTA in General LLM.
| Category | Gemini 3.8 Flash | GPT-5 |
|---|---|---|
| General LLM | #7 · Was SOTA · General LLM Margin 4.761904761904759 LMArena leaderboard dataset · Oct 13, 2026 | #76 · Was SOTA · General LLM Margin 51.70068027210884 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #6 · #6 in Reasoning Margin 4.794520547945211 LMArena leaderboard dataset · Oct 13, 2026 | #78 · Was SOTA · Reasoning Margin 54.10958904109589 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #5 · #5 in Math Margin 8.888888888888886 Epoch AI benchmarking hub · Sep 2, 2026 | #15 · Was SOTA · Math Margin 31.111111111111114 Epoch AI benchmarking hub · Aug 7, 2025 |
| Science | #4 · #4 in Science Margin — Epoch AI benchmarking hub · Sep 2, 2026 | #54 · #54 in Science Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
| Coding | #15 · #15 in Coding Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Aug 7, 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 | #66 · #66 in Coding › Web dev Margin 60.74766355140187 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #5 · Near-SOTA · Long context Margin 3.401360544217681 LMArena leaderboard dataset · Oct 13, 2026 | #107 · Was SOTA · Long context Margin 72.78911564625851 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 | #93 · #93 in Factuality Margin 70.14925373134328 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 2, 2026 | #34 · #34 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Aug 7, 2025 |
Gemini 3.8 Flash: $1.5 per 1M blended tokens.
GPT-5: $3.4375000000000004 per 1M blended tokens.
Gemini 3.8 Flash: closed weights.
GPT-5: closed weights.
General LLM: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in General LLM at #7 against #76.
Reasoning: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in Reasoning at #6 against #78.
Math: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in Math at #5 against #15.
Science: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in Science at #4 against #54.
Coding › Web dev: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in Coding › Web dev at #27 against #66.
Long context: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in Long context at #5 against #107.
Factuality: As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in Factuality at #17 against #93.
Abstraction (ARC): As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in Abstraction (ARC) at #1 against #34.
Gemini 3.8 Flash or GPT-5?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 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 for General LLM?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in General LLM at #7 against #76.
Gemini 3.8 Flash or GPT-5 for Reasoning?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in Reasoning at #6 against #78.
Gemini 3.8 Flash or GPT-5 for Math?
As of Oct 14, 2026, Gemini 3.8 Flash leads GPT-5 in Math at #5 against #15.