Claude Opus 4.8 vs Gemini 3.8 Flash
As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.8 Flash in 3 of 10 shared categories: Coding, Coding › Agentic, and Vision.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
Gemini 3.8 Flash
Yes. Yes on General LLM (best per dollar); Reasoning (best per dollar). Not the overall leader.
| Category | Claude Opus 4.8 | Gemini 3.8 Flash |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #7 · Was SOTA · General LLM Margin 4.761904761904759 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #6 · #6 in Reasoning Margin 4.794520547945211 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 | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | #4 · #4 in Science Margin — Epoch AI benchmarking hub · Sep 2, 2026 |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #15 · #15 in Coding Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Agentic | #12 · #12 in Coding › Agentic Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #15 · #15 in Coding › Agentic Margin 72.72727272727272 Terminal-Bench Harbor Hub · Oct 6, 2026 |
| Coding › Web dev | #33 · Was SOTA · Coding › Web dev Margin 29.90654205607477 LMArena leaderboard dataset · Oct 13, 2026 | #27 · #27 in Coding › Web dev Margin 24.29906542056075 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #5 · Near-SOTA · Long context Margin 3.401360544217681 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | #15 · #15 in Vision Margin 42.10526315789474 Epoch AI benchmarking hub · Sep 2, 2026 |
| Factuality | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 | #17 · #17 in Factuality Margin 13.43283582089552 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 2, 2026 |
Claude Opus 4.8: $10 per 1M blended tokens.
Gemini 3.8 Flash: $1.5 per 1M blended tokens.
Claude Opus 4.8: closed weights.
Gemini 3.8 Flash: closed weights.
General LLM: As of Oct 14, 2026, Gemini 3.8 Flash leads Claude Opus 4.8 in General LLM at #7 against #20.
Reasoning: As of Oct 14, 2026, Gemini 3.8 Flash leads Claude Opus 4.8 in Reasoning at #6 against #10.
Science: As of Oct 14, 2026, Gemini 3.8 Flash leads Claude Opus 4.8 in Science at #4 against #27.
Coding: As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.8 Flash in Coding at #12 against #15.
Coding › Agentic: As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.8 Flash in Coding › Agentic at #12 against #15.
Coding › Web dev: As of Oct 14, 2026, Gemini 3.8 Flash leads Claude Opus 4.8 in Coding › Web dev at #27 against #33.
Long context: As of Oct 14, 2026, Gemini 3.8 Flash leads Claude Opus 4.8 in Long context at #5 against #10.
Vision: As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.8 Flash in Vision at #13 against #15.
Factuality: As of Oct 14, 2026, Gemini 3.8 Flash leads Claude Opus 4.8 in Factuality at #17 against #21.
Abstraction (ARC): As of Oct 14, 2026, Gemini 3.8 Flash leads Claude Opus 4.8 in Abstraction (ARC) at #1 against #12.
Claude Opus 4.8 · Gemini 3.8 Flash
Claude Opus 4.8 or Gemini 3.8 Flash?
As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.8 Flash in 3 of 10 shared categories: Coding, Coding › Agentic, and Vision.
Claude Opus 4.8 or Gemini 3.8 Flash for General LLM?
As of Oct 14, 2026, Gemini 3.8 Flash leads Claude Opus 4.8 in General LLM at #7 against #20.
Claude Opus 4.8 or Gemini 3.8 Flash for Reasoning?
As of Oct 14, 2026, Gemini 3.8 Flash leads Claude Opus 4.8 in Reasoning at #6 against #10.
Claude Opus 4.8 or Gemini 3.8 Flash for Science?
As of Oct 14, 2026, Gemini 3.8 Flash leads Claude Opus 4.8 in Science at #4 against #27.