Compare · 2026-10-14

Claude Sonnet 5.5 vs Qwen3 5 397B A17b

As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.

CategoryClaude Sonnet 5.5Qwen3 5 397B A17b
General LLM
#27 · #27 in General LLM
Margin 18.367346938775512
LMArena leaderboard dataset · Oct 13, 2026
#66 · #66 in General LLM
Margin 44.89795918367347
LMArena leaderboard dataset · Oct 13, 2026
Reasoning
#18 · #18 in Reasoning
Margin 13.013698630136986
LMArena leaderboard dataset · Oct 13, 2026
#64 · #64 in Reasoning
Margin 44.52054794520548
LMArena leaderboard dataset · Oct 13, 2026
Math
#4 · #4 in Math
Margin 6.666666666666671
Epoch AI benchmarking hub · Sep 28, 2026
#— · Not enough data
Margin —
LMArena leaderboard dataset · Oct 13, 2026
Science
#3 · #3 in Science
Margin —
Epoch AI benchmarking hub · Sep 28, 2026
#53 · #53 in Science
Margin —
Epoch AI benchmarking hub · Feb 13, 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
#3 · Near-SOTA · Coding › Web dev
Margin 1.8691588785046775
LMArena leaderboard dataset · Oct 13, 2026
#72 · #72 in Coding › Web dev
Margin 66.35514018691589
LMArena leaderboard dataset · Oct 13, 2026
Long context
#11 · #11 in Long context
Margin 7.482993197278915
LMArena leaderboard dataset · Oct 13, 2026
#60 · #60 in Long context
Margin 40.81632653061225
LMArena leaderboard dataset · Oct 13, 2026
Vision
#1 · Co-SOTA · Vision
Margin 0
Epoch AI benchmarking hub · Sep 28, 2026
#— · Not enough data
Margin —
LMArena leaderboard dataset · Oct 9, 2026
Factuality
#16 · #16 in Factuality
Margin 12.68656716417911
LMArena leaderboard dataset · Oct 13, 2026
#59 · #59 in Factuality
Margin 44.776119402985074
LMArena leaderboard dataset · Oct 13, 2026
Price per 1M tokens

Claude Sonnet 5.5: $4.000000000000001 per 1M blended tokens.

Qwen3 5 397B A17b: $1.2750000000000001 per 1M blended tokens.

Open weights

Claude Sonnet 5.5: closed weights.

Qwen3 5 397B A17b: open weights.

Which to pick

General LLM: As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in General LLM at #27 against #66.

Reasoning: As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in Reasoning at #18 against #64.

Science: As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in Science at #3 against #53.

Coding › Web dev: As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in Coding › Web dev at #3 against #72.

Long context: As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in Long context at #11 against #60.

Factuality: As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in Factuality at #16 against #59.

Claude Sonnet 5.5 · Qwen3 5 397B A17b

Claude Sonnet 5.5 or Qwen3 5 397B A17b?

As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in 6 of 6 shared categories: General LLM, Reasoning, Science, Coding › Web dev, Long context, and Factuality.

Claude Sonnet 5.5 or Qwen3 5 397B A17b for General LLM?

As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in General LLM at #27 against #66.

Claude Sonnet 5.5 or Qwen3 5 397B A17b for Reasoning?

As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in Reasoning at #18 against #64.

Claude Sonnet 5.5 or Qwen3 5 397B A17b for Science?

As of Oct 14, 2026, Claude Sonnet 5.5 leads Qwen3 5 397B A17b in Science at #3 against #53.