Gemini 2.5 Flash vs Gemini 3.8 Flash
As of Oct 15, 2026, Gemini 2.5 Flash leads Gemini 3.8 Flash in 0 of 4 shared categories.
Gemini 2.5 Flash
#90 Best current rank: #90 in Factuality, as of Oct 15, 2026.
Gemini 3.8 Flash
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
| Category | Gemini 2.5 Flash | Gemini 3.8 Flash |
|---|---|---|
| General LLM | #139 · #139 in General LLM Margin 73.93617021276596 LMArena leaderboard dataset · Oct 13, 2026 | #7 · Near-SOTA · General LLM Margin 3.723404255319153 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #148 · #148 in Reasoning Margin 79.25531914893617 LMArena leaderboard dataset · Oct 13, 2026 | #6 · Near-SOTA · Reasoning Margin 3.723404255319153 LMArena leaderboard dataset · Oct 13, 2026 |
| Math | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #5 · #5 in Math Margin 8.888888888888886 Epoch AI benchmarking hub · Sep 2, 2026 |
| Science | — | #4 · #4 in Science Margin — Epoch AI benchmarking hub · Sep 2, 2026 |
| Coding | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 | #15 · #15 in Coding Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 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 | #138 · #138 in Long context Margin 73.40425531914894 LMArena leaderboard dataset · Oct 13, 2026 | #5 · Near-SOTA · Long context Margin 2.659574468085111 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 9, 2026 | #15 · #15 in Vision Margin 42.10526315789474 Epoch AI benchmarking hub · Sep 2, 2026 |
| Factuality | #90 · #90 in Factuality Margin 52.906976744186046 LMArena leaderboard dataset · Oct 13, 2026 | #19 · #19 in Factuality Margin 11.6279069767442 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | — | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 2, 2026 |
Gemini 2.5 Flash: $0.85 per 1M blended tokens.
Gemini 3.8 Flash: $1.5 per 1M blended tokens.
Gemini 2.5 Flash: closed weights.
Gemini 3.8 Flash: closed weights.
General LLM: As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash in General LLM at #7 against #139.
Reasoning: As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash in Reasoning at #6 against #148.
Long context: As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash in Long context at #5 against #138.
Factuality: As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash in Factuality at #19 against #90.
Gemini 2.5 Flash · Gemini 3.8 Flash
Gemini 2.5 Flash or Gemini 3.8 Flash?
As of Oct 15, 2026, Gemini 2.5 Flash leads Gemini 3.8 Flash in 0 of 4 shared categories.
Gemini 2.5 Flash or Gemini 3.8 Flash for General LLM?
As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash in General LLM at #7 against #139.
Gemini 2.5 Flash or Gemini 3.8 Flash for Reasoning?
As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash in Reasoning at #6 against #148.
Gemini 2.5 Flash or Gemini 3.8 Flash for Long context?
As of Oct 15, 2026, Gemini 3.8 Flash leads Gemini 2.5 Flash in Long context at #5 against #138.