Claude Opus 4.8 vs Gemini 3.5 Flash
As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.5 Flash in 5 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Vision.
Claude Opus 4.8
It used to be. Was SOTA in Coding › Web dev.
Gemini 3.5 Flash
#12 Best recorded rank: #12 in Abstraction (ARC), as of Oct 14, 2026.
| Category | Claude Opus 4.8 | Gemini 3.5 Flash |
|---|---|---|
| General LLM | #20 · #20 in General LLM Margin 13.605442176870753 LMArena leaderboard dataset · Oct 13, 2026 | #24 · #24 in General LLM Margin 16.326530612244895 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #10 · #10 in Reasoning Margin 7.534246575342465 LMArena leaderboard dataset · Oct 13, 2026 | #32 · #32 in Reasoning Margin 22.602739726027394 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 | #27 · #27 in Science Margin — Epoch AI benchmarking hub · May 28, 2026 | #18 · #18 in Science Margin — Epoch AI benchmarking hub · May 19, 2026 |
| Coding | #12 · #12 in Coding Margin 59.09090909090909 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — Epoch AI benchmarking hub · May 19, 2026 |
| Coding › Agentic | #12 · #12 in Coding › Agentic Margin 59.09090909090909 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 | #48 · #48 in Coding › Web dev Margin 43.925233644859816 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #10 · Was SOTA · Long context Margin 6.802721088435391 LMArena leaderboard dataset · Oct 13, 2026 | #28 · #28 in Long context Margin 19.04761904761905 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #13 · #13 in Vision Margin 36.842105263157904 Epoch AI benchmarking hub · May 28, 2026 | #29 · #29 in Vision Margin 86.84210526315789 Epoch AI benchmarking hub · May 19, 2026 |
| Factuality | #21 · #21 in Factuality Margin 16.417910447761187 LMArena leaderboard dataset · Oct 13, 2026 | #13 · #13 in Factuality Margin 10.447761194029852 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 28, 2026 | #12 · #12 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · May 19, 2026 |
Claude Opus 4.8: $10 per 1M blended tokens.
Gemini 3.5 Flash: $3.375 per 1M blended tokens.
Claude Opus 4.8: closed weights.
Gemini 3.5 Flash: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.5 Flash in General LLM at #20 against #24.
Reasoning: As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.5 Flash in Reasoning at #10 against #32.
Science: As of Oct 14, 2026, Gemini 3.5 Flash leads Claude Opus 4.8 in Science at #18 against #27.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.5 Flash in Coding › Web dev at #33 against #48.
Long context: As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.5 Flash in Long context at #10 against #28.
Vision: As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.5 Flash in Vision at #13 against #29.
Factuality: As of Oct 14, 2026, Gemini 3.5 Flash leads Claude Opus 4.8 in Factuality at #13 against #21.
Abstraction (ARC): As of Oct 14, 2026, Claude Opus 4.8 and Gemini 3.5 Flash share #12 in Abstraction (ARC).
Claude Opus 4.8 · Gemini 3.5 Flash
Claude Opus 4.8 or Gemini 3.5 Flash?
As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.5 Flash in 5 of 8 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Vision.
Claude Opus 4.8 or Gemini 3.5 Flash for General LLM?
As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.5 Flash in General LLM at #20 against #24.
Claude Opus 4.8 or Gemini 3.5 Flash for Reasoning?
As of Oct 14, 2026, Claude Opus 4.8 leads Gemini 3.5 Flash in Reasoning at #10 against #32.
Claude Opus 4.8 or Gemini 3.5 Flash for Science?
As of Oct 14, 2026, Gemini 3.5 Flash leads Claude Opus 4.8 in Science at #18 against #27.