Noometry

Model comparison

Claude Opus 5 vs Qwen3-4B

Claude Opus 5 is the stronger model overall, scoring 67.8 to 31.9 on the Noometry Index.

Last verified . 3 shared benchmarks.

Claude Opus 5 Anthropic

67.8

Rank #4 Confirmed

Qwen3-4B Alibaba (Qwen)

31.9

Rank #264 Confirmed

Summary

  • They share 3 benchmarks with published results for both. Claude Opus 5 scores higher in 4 categories and Qwen3-4B in 0 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in reasoning, where Claude Opus 5 leads 77.2 to 19.2.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 98.9% for Claude Opus 5 and 52.2% for Qwen3-4B.
  • Qwen3-4B has downloadable open weights; the other is API-only.

Side by side

Claude Opus 5Qwen3-4B
ProviderAnthropicAlibaba (Qwen)
Noometry Index67.831.9
Released2026-07-242025-04-29
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$5—
Output $ / M tokens$25—
Results tracked576

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Category by category

Coding Not comparable

Claude Opus 5: 67.5 (#5), Qwen3-4B: —

BenchmarkClaude Opus 5Qwen3-4B
DeepSWE73.6%—
FrontierCode53.4%—
CursorBench46.6%—
LMArena WebDev1691—
FrontierSWE52%—
SciCode56.4%—
WeirdML91.8%—
LMArena Coding1534—
ALE-Bench2,165—

Agentic & Tool Use Claude Opus 5 leads

Claude Opus 5: 55.6 (#1), Qwen3-4B: 27.6 (#100)

BenchmarkClaude Opus 5Qwen3-4B
APEX-Agents65.8%—
Berkeley Function Calling Leaderboard—35.7%
OSWorld 2.031.4%—
τ²-bench Banking48.7%—
PostTrainBench35%—
BALROG63.4%—
GBAEval79.6%—
GDP.pdf24%—
Vending-Bench 211,182—

Reasoning Claude Opus 5 leads

Claude Opus 5: 77.2 (#4), Qwen3-4B: 19.2 (#268)

BenchmarkClaude Opus 5Qwen3-4B
Chess Puzzles42%4%
ARC-AGI-290.4%—
SimpleBench80.6%—
NYT Connections (extended)94.3%—
ARC-AGI-197.5%—
CritPt29.1%—
EBR-Bench45.7%—
LMArena Hard Prompts1526—
Mystery Game Puzzles59%—
DTBench97.9%—
LMCA64.5%—
Bench to the Future 30.12—
Epoch Capabilities Index162.78—

Math Claude Opus 5 leads

Claude Opus 5: 86.2 (#8), Qwen3-4B: 29.7 (#240)

BenchmarkClaude Opus 5Qwen3-4B
OTIS Mock AIME 2024-202598.9%52.2%
FrontierMath (Tiers 1-3)85.6%—
FrontierMath Tier 473.2%—
MathArena Final-Answer Competitions—38.5%
ProofBench99%—
LMArena Math1531—

Knowledge Claude Opus 5 leads

Claude Opus 5: 66.8 (#9), Qwen3-4B: 33.0 (#208)

BenchmarkClaude Opus 5Qwen3-4B
GPQA Diamond93.9%52.3%
SimpleQA Verified59.9%—
Vectara Hallucination Rate—5.7%
LMArena Expert1557—

Multimodal Not comparable

Claude Opus 5: 50.8 (#8), Qwen3-4B: —

BenchmarkClaude Opus 5Qwen3-4B
LMArena Vision1319—
Blueprint-Bench 230.4%—
Furniture Assembly60.8%—
LMArena Document1516—

Multilingual Not comparable

Claude Opus 5: 58.8 (#4), Qwen3-4B: —

BenchmarkClaude Opus 5Qwen3-4B
LMArena Non-English1501—
LMArena Chinese1574—
LMArena French1519—
LMArena German1524—
LMArena Japanese1516—
LMArena Korean1521—
LMArena Russian1507—
LMArena Spanish1519—

Instruction Following Not comparable

Claude Opus 5: 79.2 (#7), Qwen3-4B: —

BenchmarkClaude Opus 5Qwen3-4B
LMArena Instruction Following1517—

Long Context Not comparable

Claude Opus 5: 46.5 (#21), Qwen3-4B: —

BenchmarkClaude Opus 5Qwen3-4B
LMArena Longer Query1515—

Writing & Preference Not comparable

Claude Opus 5: 79.2 (#1), Qwen3-4B: —

BenchmarkClaude Opus 5Qwen3-4B
LMArena Text1507—
LMArena Creative Writing1491—
EQ-Bench Creative Writing2133—
EQ-Bench 41385—
LMArena Multi-Turn1499—

Frequently asked questions

Is Claude Opus 5 better than Qwen3-4B?

Claude Opus 5 is the stronger model overall, scoring 67.8 to 31.9 on the Noometry Index.

How many benchmarks do Claude Opus 5 and Qwen3-4B share?

3 benchmarks have published results for both models. Claude Opus 5 has 57 scored results on Noometry and Qwen3-4B has 6.

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