Noometry

Model comparison

Claude Sonnet 5 vs Qwen1.5 4b Chat

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 28.8 on the Noometry Index.

Last verified . 13 shared benchmarks.

Claude Sonnet 5 Anthropic

54.6

Rank #29 Confirmed

Qwen1.5 4b Chat Alibaba (Qwen)

28.8

Rank #322 Confirmed

Summary

  • They share 13 benchmarks with published results for both. Claude Sonnet 5 scores higher in 8 categories and Qwen1.5 4b Chat in 0 categories; 8 gaps are clear of the uncertainty.
  • The widest gap is in writing & preference, where Claude Sonnet 5 leads 69.2 to 23.8.
  • Qwen1.5 4b Chat has downloadable open weights; the other is API-only.

Side by side

Claude Sonnet 5Qwen1.5 4b Chat
ProviderAnthropicAlibaba (Qwen)
Noometry Index54.628.8
Released2026-06-29—
WeightsProprietaryOpen
Context window1M—
Max output128K—
Input $ / M tokens$2—
Output $ / M tokens$10—
Results tracked5113

Sponsored placements are available on pages like this one. Advertise on Noometry

Category by category

Coding Claude Sonnet 5 leads

Claude Sonnet 5: 55.5 (#26), Qwen1.5 4b Chat: 29.1 (#308)

BenchmarkClaude Sonnet 5Qwen1.5 4b Chat
LMArena Coding1483999
DeepSWE53.8%—
FrontierCode42.7%—
CursorBench34.1%—
LMArena WebDev1541—
SciCode54.3%—
GSO37.3%—
WeirdML68.8%—
ALE-Bench1,463—

Agentic & Tool Use Not comparable

Claude Sonnet 5: 42.8 (#18), Qwen1.5 4b Chat: —

BenchmarkClaude Sonnet 5Qwen1.5 4b Chat
APEX-Agents54.5%—
GBAEval65.3%—
LMArena Search1194—
Vending-Bench 26,378—

Reasoning Claude Sonnet 5 leads

Claude Sonnet 5: 49.1 (#39), Qwen1.5 4b Chat: 18.5 (#279)

BenchmarkClaude Sonnet 5Qwen1.5 4b Chat
LMArena Hard Prompts1461976
SimpleBench60.6%—
NYT Connections (extended)75.1%—
CritPt16.9%—
Chess Puzzles35%—
Mystery Game Puzzles35%—
DTBench92.5%—
LMCA50%—
Surface Evolver Bench60%—
Bench to the Future 30.14—
Epoch Capabilities Index156.21—
ForecastBench61.1—

Math Claude Sonnet 5 leads

Claude Sonnet 5: 66.2 (#27), Qwen1.5 4b Chat: 30.4 (#234)

BenchmarkClaude Sonnet 5Qwen1.5 4b Chat
LMArena Math14671026
FrontierMath (Tiers 1-3)65.6%—
FrontierMath Tier 429.3%—
OTIS Mock AIME 2024-202594.7%—
ProofBench77%—

Knowledge Claude Sonnet 5 leads

Claude Sonnet 5: 55.6 (#47), Qwen1.5 4b Chat: 26.7 (#255)

BenchmarkClaude Sonnet 5Qwen1.5 4b Chat
LMArena Expert1490980
GPQA Diamond90.5%—
SimpleQA Verified33.7%—

Multimodal Not comparable

Claude Sonnet 5: 42.4 (#31), Qwen1.5 4b Chat: —

BenchmarkClaude Sonnet 5Qwen1.5 4b Chat
LMArena Vision1274—
Blueprint-Bench 224.9%—
LMArena Document1466—

Multilingual Claude Sonnet 5 leads

Claude Sonnet 5: 53.8 (#55), Qwen1.5 4b Chat: 24.1 (#290)

BenchmarkClaude Sonnet 5Qwen1.5 4b Chat
LMArena Non-English1431979
LMArena Chinese14771024
LMArena German1440902
LMArena Russian1451952
LMArena French1460—
LMArena Japanese1422—
LMArena Korean1411—
LMArena Spanish1437—

Instruction Following Claude Sonnet 5 leads

Claude Sonnet 5: 76.3 (#41), Qwen1.5 4b Chat: 49.0 (#300)

BenchmarkClaude Sonnet 5Qwen1.5 4b Chat
LMArena Instruction Following1452978

Long Context Claude Sonnet 5 leads

Claude Sonnet 5: 44.8 (#55), Qwen1.5 4b Chat: 30.1 (#290)

BenchmarkClaude Sonnet 5Qwen1.5 4b Chat
LMArena Longer Query1463988

Writing & Preference Claude Sonnet 5 leads

Claude Sonnet 5: 69.2 (#25), Qwen1.5 4b Chat: 23.8 (#309)

BenchmarkClaude Sonnet 5Qwen1.5 4b Chat
LMArena Text1442997
LMArena Creative Writing1416969
LMArena Multi-Turn1454977
EQ-Bench Creative Writing1794—
EQ-Bench 41236—

Frequently asked questions

Is Claude Sonnet 5 better than Qwen1.5 4b Chat?

Claude Sonnet 5 is the stronger model overall, scoring 54.6 to 28.8 on the Noometry Index.

Is Claude Sonnet 5 or Qwen1.5 4b Chat better for coding?

Claude Sonnet 5 scores higher on coding benchmarks: 55.5 versus 29.1 in the Noometry coding category.

How many benchmarks do Claude Sonnet 5 and Qwen1.5 4b Chat share?

13 benchmarks have published results for both models. Claude Sonnet 5 has 51 scored results on Noometry and Qwen1.5 4b Chat has 13.

Related comparisons

Go deeper