Noometry

Model comparison

GPT-4.1 vs Qwen3.5 Plus

Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 35.9 on the Noometry Index.

Last verified . 11 shared benchmarks.

GPT-4.1 OpenAI

35.9

Rank #219 Confirmed

Qwen3.5 Plus Alibaba (Qwen)

42.9

Rank #106 Confirmed

Summary

  • They share 11 benchmarks with published results for both. GPT-4.1 scores higher in 0 categories and Qwen3.5 Plus in 4 categories; 4 gaps are clear of the uncertainty.
  • The widest gap is in math, where Qwen3.5 Plus leads 49.6 to 22.3.
  • The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 38.3% for GPT-4.1 and 86.7% for Qwen3.5 Plus.
  • Qwen3.5 Plus is cheaper at $0.40 / $2.40 per million input/output tokens, against $2 / $8 for GPT-4.1.
  • GPT-4.1 accepts more context: 1.05M tokens versus 1M.

Side by side

GPT-4.1Qwen3.5 Plus
ProviderOpenAIAlibaba (Qwen)
Noometry Index35.942.9
Released2025-04-142026-02-16
WeightsProprietaryProprietary
Context window1.05M1M
Max output33K66K
Input $ / M tokens$2$0.40
Output $ / M tokens$8$2.40
Results tracked5215

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Category by category

Coding Not comparable

GPT-4.1: 34.4 (#238), Qwen3.5 Plus: —

BenchmarkGPT-4.1Qwen3.5 Plus
ALE-Bench558.1621.92
SWE-bench Verified48.5%—
SWE-bench Verified (bash only)39.6%—
Aider Polyglot52.4%—
WeirdML39%—
LMArena Coding1391—
CadEval42%—

Agentic & Tool Use Not comparable

GPT-4.1: 34.7 (#43), Qwen3.5 Plus: —

BenchmarkGPT-4.1Qwen3.5 Plus
Berkeley Function Calling Leaderboard54%—
Vending-Bench 2—0.54

Reasoning Qwen3.5 Plus leads

GPT-4.1: 11.7 (#339), Qwen3.5 Plus: 32.8 (#74)

BenchmarkGPT-4.1Qwen3.5 Plus
Chess Puzzles6%22%
DTBench68.3%80.5%
LMCA25.6%36.4%
Epoch Capabilities Index136.78146.78
ARC-AGI-20.4%—
SimpleBench27%—
Kagi LLM Benchmark52.3%—
ARC-AGI-15.5%—
EnigmaEval2.2%—
LMArena Hard Prompts1384—
Mystery Game Puzzles—17%
ForecastBench61.5—

Math Qwen3.5 Plus leads

GPT-4.1: 22.3 (#280), Qwen3.5 Plus: 49.6 (#61)

BenchmarkGPT-4.1Qwen3.5 Plus
OTIS Mock AIME 2024-202538.3%86.7%
FrontierMath (Feb 2025 set)5.5%21%
FrontierMath Tier 4 (v1)0%2.1%
FrontierMath (Tiers 1-3)6%—
Omni-MATH47.1%—
LMArena Math1370—
MATH Level 583%—

Knowledge Qwen3.5 Plus leads

GPT-4.1: 37.1 (#160), Qwen3.5 Plus: 46.0 (#83)

BenchmarkGPT-4.1Qwen3.5 Plus
GPQA Diamond66.9%84.8%
SimpleQA Verified31.1%25.4%
Vectara Hallucination Rate5.6%10.7%
Humanity's Last Exam5.4%—
MMLU-Pro81.1%—
GPQA (HELM)65.9%—
LMArena Expert1364—

Multimodal Not comparable

GPT-4.1: 38.2 (#67), Qwen3.5 Plus: —

BenchmarkGPT-4.1Qwen3.5 Plus
LMArena Vision1211—
GeoBench72%—

Multilingual Not comparable

GPT-4.1: 49.4 (#133), Qwen3.5 Plus: —

BenchmarkGPT-4.1Qwen3.5 Plus
LMArena Non-English1370—
LMArena Chinese1382—
LMArena French1382—
LMArena German1381—
LMArena Japanese1319—
LMArena Korean1339—
LMArena Russian1377—
LMArena Spanish1376—

Instruction Following Not comparable

GPT-4.1: 71.3 (#153), Qwen3.5 Plus: —

BenchmarkGPT-4.1Qwen3.5 Plus
IFEval83.8%—
LMArena Instruction Following1367—

Long Context Qwen3.5 Plus leads

GPT-4.1: 40.0 (#163), Qwen3.5 Plus: 43.0 (#113)

BenchmarkGPT-4.1Qwen3.5 Plus
Fiction.LiveBench63.9%—
CL-bench—19.8%
CL-bench Life—12.4%
LMArena Longer Query1385—

Writing & Preference Not comparable

GPT-4.1: 57.6 (#125), Qwen3.5 Plus: —

BenchmarkGPT-4.1Qwen3.5 Plus
LMArena Text1383—
LMArena Creative Writing1363—
EQ-Bench Creative Writing1420—
WildBench85.4%—
LMArena Multi-Turn1398—

Frequently asked questions

Is GPT-4.1 better than Qwen3.5 Plus?

Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 35.9 on the Noometry Index.

Which is cheaper, GPT-4.1 or Qwen3.5 Plus?

Qwen3.5 Plus is cheaper. It lists at $0.40 per million input tokens and $2.40 per million output tokens; GPT-4.1 lists at $2 and $8.

Which has the bigger context window?

GPT-4.1 does, with 1.05M tokens against 1M.

How many benchmarks do GPT-4.1 and Qwen3.5 Plus share?

11 benchmarks have published results for both models. GPT-4.1 has 52 scored results on Noometry and Qwen3.5 Plus has 15.

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