Gemini 3.8 Flash vs O3
As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in 7 of 7 shared categories: General LLM, Reasoning, Math, Science, 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.
O3
It used to be. Was SOTA in General LLM.
| Category | Gemini 3.8 Flash | O3 |
|---|---|---|
| General LLM | #7 · Near-SOTA · General LLM Margin 3.723404255319153 LMArena leaderboard dataset · Oct 13, 2026 | #100 · Was SOTA · General LLM Margin 53.191489361702125 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #6 · Near-SOTA · Reasoning Margin 3.723404255319153 LMArena leaderboard dataset · Oct 13, 2026 | #117 · Was SOTA · Reasoning Margin 62.765957446808514 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #5 · #5 in Math Margin 8.888888888888886 Epoch AI benchmarking hub · Sep 2, 2026 | #20 · Was SOTA · Math Margin 42.22222222222222 Epoch AI benchmarking hub · Apr 16, 2025 |
| Science | #4 · #4 in Science Margin — Epoch AI benchmarking hub · Sep 2, 2026 | #67 · #67 in Science Margin — Epoch AI benchmarking hub · Apr 16, 2025 |
| Coding | #15 · #15 in Coding Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #15 · #15 in Coding › Agentic Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #29 · #29 in Coding › Web dev Margin 22.400000000000006 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #5 · Near-SOTA · Long context Margin 2.659574468085111 LMArena leaderboard dataset · Oct 13, 2026 | #145 · Was SOTA · Long context Margin 77.12765957446808 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 | #19 · #19 in Factuality Margin 11.6279069767442 LMArena leaderboard dataset · Oct 13, 2026 | #139 · #139 in Factuality Margin 81.3953488372093 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 2, 2026 | #37 · #37 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Apr 16, 2025 |
Gemini 3.8 Flash: $1.5 per 1M blended tokens.
O3: $3.5 per 1M blended tokens.
Gemini 3.8 Flash: closed weights.
O3: closed weights.
General LLM: As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in General LLM at #7 against #100.
Reasoning: As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in Reasoning at #6 against #117.
Math: As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in Math at #5 against #20.
Science: As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in Science at #4 against #67.
Long context: As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in Long context at #5 against #145.
Factuality: As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in Factuality at #19 against #139.
Abstraction (ARC): As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in Abstraction (ARC) at #1 against #37.
Gemini 3.8 Flash or O3?
As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in 7 of 7 shared categories: General LLM, Reasoning, Math, Science, Long context, Factuality, and Abstraction (ARC).
Gemini 3.8 Flash or O3 for General LLM?
As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in General LLM at #7 against #100.
Gemini 3.8 Flash or O3 for Reasoning?
As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in Reasoning at #6 against #117.
Gemini 3.8 Flash or O3 for Math?
As of Oct 15, 2026, Gemini 3.8 Flash leads O3 in Math at #5 against #20.