Gemini 3.5 Flash vs O3 Mini
As of Oct 15, 2026, Gemini 3.5 Flash leads O3 Mini in 4 of 5 shared categories: Reasoning, Science, Long context, and Abstraction (ARC).
Gemini 3.5 Flash
#12 Best recorded rank: #12 in Abstraction (ARC), as of Oct 15, 2026.
O3 Mini
It used to be. Was SOTA in Reasoning.
| Category | Gemini 3.5 Flash | O3 Mini |
|---|---|---|
| General LLM | #25 · #25 in General LLM Margin 13.297872340425528 LMArena leaderboard dataset · Oct 13, 2026 | #10 · #10 in General LLM Margin — LMArena leaderboard dataset · Apr 16, 2025 |
| Reasoning | #35 · #35 in Reasoning Margin 19.148936170212764 LMArena leaderboard dataset · Oct 13, 2026 | #172 · Was SOTA · Reasoning Margin 92.02127659574468 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Science | #18 · #18 in Science Margin — Epoch AI benchmarking hub · May 19, 2026 | #76 · #76 in Science Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Web dev | #52 · #52 in Coding › Web dev Margin 40.8 LMArena leaderboard dataset · Oct 13, 2026 | — |
| Long context | #33 · #33 in Long context Margin 17.55319148936171 LMArena leaderboard dataset · Oct 13, 2026 | #186 · #186 in Long context Margin 98.93617021276596 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · May 19, 2026 | — |
| Factuality | #14 · #14 in Factuality Margin 8.720930232558146 LMArena leaderboard dataset · Oct 13, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 19, 2026 | #51 · #51 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jan 31, 2025 |
Gemini 3.5 Flash: $3.375 per 1M blended tokens.
O3 Mini: $1.9250000000000003 per 1M blended tokens.
Gemini 3.5 Flash: closed weights.
O3 Mini: closed weights.
General LLM: As of Oct 15, 2026, O3 Mini leads Gemini 3.5 Flash in General LLM at #10 against #25.
Reasoning: As of Oct 15, 2026, Gemini 3.5 Flash leads O3 Mini in Reasoning at #35 against #172.
Science: As of Oct 15, 2026, Gemini 3.5 Flash leads O3 Mini in Science at #18 against #76.
Long context: As of Oct 15, 2026, Gemini 3.5 Flash leads O3 Mini in Long context at #33 against #186.
Abstraction (ARC): As of Oct 15, 2026, Gemini 3.5 Flash leads O3 Mini in Abstraction (ARC) at #12 against #51.
Gemini 3.5 Flash or O3 Mini?
As of Oct 15, 2026, Gemini 3.5 Flash leads O3 Mini in 4 of 5 shared categories: Reasoning, Science, Long context, and Abstraction (ARC).
Gemini 3.5 Flash or O3 Mini for General LLM?
As of Oct 15, 2026, O3 Mini leads Gemini 3.5 Flash in General LLM at #10 against #25.
Gemini 3.5 Flash or O3 Mini for Reasoning?
As of Oct 15, 2026, Gemini 3.5 Flash leads O3 Mini in Reasoning at #35 against #172.
Gemini 3.5 Flash or O3 Mini for Science?
As of Oct 15, 2026, Gemini 3.5 Flash leads O3 Mini in Science at #18 against #76.