Noometry

Model comparison

Claude Opus 5.5 vs Qwen3-4B

Claude Opus 5.5 is the stronger model overall, scoring 68.5 to 31.5 on the Noometry Index.

Last verified . 2 shared benchmarks.

Claude Opus 5.5 Anthropic

68.5

Rank #3 Confirmed

Qwen3-4B Alibaba (Qwen)

31.5

Rank #261 Confirmed

Summary

  • They share 2 benchmarks with published results for both. Claude Opus 5.5 scores higher in 4 categories and Qwen3-4B in 0 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in math, where Claude Opus 5.5 leads 92.4 to 28.5.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 100% for Claude Opus 5.5 and 52.2% for Qwen3-4B.
  • Qwen3-4B has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5.5Qwen3-4B
ProviderAnthropicAlibaba (Qwen)
Noometry Index68.531.5
Released2026-09-222025-04-29
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$4—
Output $ / M tokens$20—
Results tracked356

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Category by category

Coding Not comparable

Claude Opus 5.5: 71.4 (#1), Qwen3-4B: —

BenchmarkClaude Opus 5.5Qwen3-4B
FrontierCode54.4%—
CursorBench57.8%—
LMArena WebDev1820—
FrontierSWE62.3%—
SciCode66.9%—
LMArena Coding1545—
MirrorCode77.4%—

Agentic & Tool Use Claude Opus 5.5 leads

Claude Opus 5.5: 45.3 (#13), Qwen3-4B: 27.3 (#94)

BenchmarkClaude Opus 5.5Qwen3-4B
APEX-Agents73.5%—
Berkeley Function Calling Leaderboard—35.7%
GDP.pdf30.6%—

Reasoning Claude Opus 5.5 leads

Claude Opus 5.5: 79.5 (#2), Qwen3-4B: 18.5 (#264)

BenchmarkClaude Opus 5.5Qwen3-4B
ARC-AGI-292.5%—
NYT Connections (extended)88.5%—
ARC-AGI-197.5%—
CritPt31.7%—
Chess Puzzles—4%
EBR-Bench71.4%—
LMArena Hard Prompts1545—
Mystery Game Puzzles71%—
DTBench98.9%—
LMCA68.2%—

Math Claude Opus 5.5 leads

Claude Opus 5.5: 92.4 (#2), Qwen3-4B: 28.5 (#228)

BenchmarkClaude Opus 5.5Qwen3-4B
OTIS Mock AIME 2024-2025100%52.2%
FrontierMath (Tiers 1-3)91.2%—
FrontierMath Tier 495%—
MathArena Final-Answer Competitions—38.5%
ProofBench100%—

Knowledge Claude Opus 5.5 leads

Claude Opus 5.5: 66.6 (#9), Qwen3-4B: 33.0 (#198)

BenchmarkClaude Opus 5.5Qwen3-4B
GPQA Diamond90.6%52.3%
SimpleQA Verified72.2%—
Vectara Hallucination Rate—5.7%
LMArena Expert1564—

Multimodal Not comparable

Claude Opus 5.5: 56.5 (#2), Qwen3-4B: —

BenchmarkClaude Opus 5.5Qwen3-4B
Furniture Assembly83.3%—

Multilingual Not comparable

Claude Opus 5.5: 59.8 (#1), Qwen3-4B: —

BenchmarkClaude Opus 5.5Qwen3-4B
LMArena Non-English1513—
LMArena Chinese1572—
LMArena Russian1532—

Instruction Following Not comparable

Claude Opus 5.5: 80.1 (#2), Qwen3-4B: —

BenchmarkClaude Opus 5.5Qwen3-4B
LMArena Instruction Following1535—

Long Context Not comparable

Claude Opus 5.5: 47.3 (#18), Qwen3-4B: —

BenchmarkClaude Opus 5.5Qwen3-4B
LMArena Longer Query1540—

Writing & Preference Not comparable

Claude Opus 5.5: 78.7 (#3), Qwen3-4B: —

BenchmarkClaude Opus 5.5Qwen3-4B
LMArena Text1518—
LMArena Creative Writing1538—
EQ-Bench Creative Writing2050—
LMArena Multi-Turn1520—

Frequently asked questions

Is Claude Opus 5.5 better than Qwen3-4B?

Claude Opus 5.5 is the stronger model overall, scoring 68.5 to 31.5 on the Noometry Index.

How many benchmarks do Claude Opus 5.5 and Qwen3-4B share?

2 benchmarks have published results for both models. Claude Opus 5.5 has 35 scored results on Noometry and Qwen3-4B has 6.

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