Claude Opus 5 vs Qwen3 5 Flash
As of Oct 14, 2026, Claude Opus 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
Close. Near-SOTA in Factuality, rank #4.
Qwen3 5 Flash
#66 Best recorded rank: #66 in Science, as of Oct 14, 2026.
| Category | Claude Opus 5 | Qwen3 5 Flash |
|---|---|---|
| General LLM | #11 · Was SOTA · General LLM Margin 7.482993197278915 LMArena leaderboard dataset · Oct 13, 2026 | #119 · #119 in General LLM Margin 80.95238095238095 LMArena leaderboard dataset · Oct 13, 2026 |
| Reasoning | #9 · Was SOTA · Reasoning Margin 6.849315068493155 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 | #12 · #12 in Science Margin — Epoch AI benchmarking hub · Jul 24, 2026 | #66 · #66 in Science Margin — Epoch AI benchmarking hub · Feb 25, 2026 |
| Coding | #4 · #4 in Coding Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | #— · Not enough data Margin — LMArena leaderboard dataset · Oct 13, 2026 |
| Coding › Agentic | #4 · #4 in Coding › Agentic Margin 22.727272727272734 Terminal-Bench Harbor Hub · Oct 6, 2026 | — |
| Coding › Web dev | #6 · Was SOTA · Coding › Web dev Margin 4.672897196261687 LMArena leaderboard dataset · Oct 13, 2026 | #101 · #101 in Coding › Web dev Margin 93.45794392523365 LMArena leaderboard dataset · Oct 13, 2026 |
| Long context | #9 · Was SOTA · Long context Margin 6.122448979591837 LMArena leaderboard dataset · Oct 13, 2026 | #122 · #122 in Long context Margin 82.99319727891157 LMArena leaderboard dataset · Oct 13, 2026 |
| Vision | #12 · #12 in Vision Margin 36.8421052631579 Epoch AI benchmarking hub · Jul 24, 2026 | — |
| Factuality | #4 · Near-SOTA · Factuality Margin 3.731343283582092 LMArena leaderboard dataset · Oct 13, 2026 | #101 · #101 in Factuality Margin 76.11940298507463 LMArena leaderboard dataset · Oct 13, 2026 |
| Abstraction (ARC) | #3 · #3 in Abstraction (ARC) Margin — Epoch AI benchmarking hub · Jul 24, 2026 | — |
Claude Opus 5: $10 per 1M blended tokens.
Qwen3 5 Flash: price per 1M tokens is unset in the catalog.
Claude Opus 5: closed weights.
Qwen3 5 Flash: closed weights.
General LLM: As of Oct 14, 2026, Claude Opus 5 leads Qwen3 5 Flash in General LLM at #11 against #119.
Reasoning: As of Oct 14, 2026, Claude Opus 5 leads Qwen3 5 Flash in Reasoning at #9 against #121.
Science: As of Oct 14, 2026, Claude Opus 5 leads Qwen3 5 Flash in Science at #12 against #66.
Coding › Web dev: As of Oct 14, 2026, Claude Opus 5 leads Qwen3 5 Flash in Coding › Web dev at #6 against #101.
Long context: As of Oct 14, 2026, Claude Opus 5 leads Qwen3 5 Flash in Long context at #9 against #122.
Factuality: As of Oct 14, 2026, Claude Opus 5 leads Qwen3 5 Flash in Factuality at #4 against #101.
Claude Opus 5 or Qwen3 5 Flash?
As of Oct 14, 2026, Claude Opus 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 or Qwen3 5 Flash for General LLM?
As of Oct 14, 2026, Claude Opus 5 leads Qwen3 5 Flash in General LLM at #11 against #119.
Claude Opus 5 or Qwen3 5 Flash for Reasoning?
As of Oct 14, 2026, Claude Opus 5 leads Qwen3 5 Flash in Reasoning at #9 against #121.
Claude Opus 5 or Qwen3 5 Flash for Science?
As of Oct 14, 2026, Claude Opus 5 leads Qwen3 5 Flash in Science at #12 against #66.