Claude Opus 5.5 vs Qwen3 5 Flash
As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Opus 5.5
Yes. SOTA in co-SOTA in Reasoning, co-SOTA in Coding, co-SOTA in Coding › Agentic, Coding › Web dev, co-SOTA in Long context and co-SOTA in Factuality.
Qwen3 5 Flash
#66 Best recorded rank: #66 in Science, as of Oct 14, 2026.
| Category | Claude Opus 5.5 | Qwen3 5 Flash |
|---|---|---|
| General LLM | #2 · Near-SOTA · General LLM Margin 1.3605442176870781 LMArena leaderboard dataset · Oct 13, 2026 | #119 · #119 in General LLM Margin 80.95238095238095 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #1 · Co-SOTA · Reasoning Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #121 · #121 in Reasoning Margin 83.56164383561644 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 | #31 · #31 in Science Margin — Epoch AI benchmarking hub · Sep 22, 2026 | #66 · #66 in Science Margin — Epoch AI benchmarking hub · Feb 25, 2026 |
| Coding | #1 · Co-SOTA · Coding Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #1 · Co-SOTA · Coding › Agentic Margin 0 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #1 · SOTA · Coding › Web dev Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #101 · #101 in Coding › Web dev Margin 93.45794392523365 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #1 · Co-SOTA · Long context Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #122 · #122 in Long context Margin 82.99319727891157 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #4 · Near-SOTA · Vision Margin 13.15789473684211 Epoch AI benchmarking hub · Sep 22, 2026 | — |
| Factuality | #1 · Co-SOTA · Factuality Margin 0 LMArena leaderboard dataset · Oct 13, 2026 | #101 · #101 in Factuality Margin 76.11940298507463 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #1 · #1 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Sep 22, 2026 | — |
Claude Opus 5.5: $8.000000000000002 per 1M blended tokens.
Qwen3 5 Flash: price per 1M tokens is unset in the catalog.
Claude Opus 5.5: closed weights.
Qwen3 5 Flash: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in General LLM at #2 against #119.
Reasoning: As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in Reasoning at #1 against #121.
Science: As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in Science at #31 against #66.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in Coding › Web dev at #1 against #101.
Long context: As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in Long context at #1 against #122.
Factuality: As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in Factuality at #1 against #101.
Claude Opus 5.5 · Qwen3 5 Flash
Claude Opus 5.5 or Qwen3 5 Flash?
As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.
Claude Opus 5.5 or Qwen3 5 Flash for General LLM?
As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in General LLM at #2 against #119.
Claude Opus 5.5 or Qwen3 5 Flash for Reasoning?
As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in Reasoning at #1 against #121.
Claude Opus 5.5 or Qwen3 5 Flash for Science?
As of Oct 14, 2026, Claude Opus 5.5 leads Qwen3 5 Flash in Science at #31 against #66.