Model comparison

GPT-4.5 vs Qwen3.5 Plus

Qwen3.5 Plus is the stronger model overall, scoring 42.9 to 37.2 on the Noometry Index.

Last verified October 11, 2026. 3 shared benchmarks.

GPT-4.5 OpenAI

37.2

Rank #208 Confirmed

Qwen3.5 Plus

Alibaba (Qwen)

42.9

Rank #106 Confirmed

Summary

They share 3 benchmarks with published results for both. GPT-4.5 scores higher in 0 categories and Qwen3.5 Plus in 4 categories; 4 gaps are clear of the uncertainty.
The widest gap is in reasoning, where Qwen3.5 Plus leads 32.8 to 13.9.
The biggest single-benchmark swing is OTIS Mock AIME 2024-2025: 37.8% for GPT-4.5 and 86.7% for Qwen3.5 Plus.

Side by side

GPT-4.5 and Qwen3.5 Plus specifications
	GPT-4.5	Qwen3.5 Plus
Provider	OpenAI	Alibaba (Qwen)
Noometry Index	37.2	42.9
Released	2025-02-27	2026-02-16
Weights	Proprietary	Proprietary
Context window	—	1M
Max output	—	66K
Input $ / M tokens	—	$0.40
Output $ / M tokens	—	$2.40
Results tracked	42	15

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Category by category

Coding Not comparable

GPT-4.5: 42.2 (#109), Qwen3.5 Plus: —

Coding benchmarks
Benchmark	GPT-4.5	Qwen3.5 Plus
Aider Polyglot	44.9%	—
WeirdML	39.4%	—
LiveBench Coding	75.2%	—
LMArena Coding	1396	—
ALE-Bench	—	621.92

Agentic & Tool Use Not comparable

GPT-4.5: 27.9 (#97), Qwen3.5 Plus: —

Agentic & Tool Use benchmarks
Benchmark	GPT-4.5	Qwen3.5 Plus
Cybench	17.5%	—
Vending-Bench 2	—	0.54

Reasoning Qwen3.5 Plus leads

GPT-4.5: 13.9 (#330), Qwen3.5 Plus: 32.8 (#74)

Reasoning benchmarks
Benchmark	GPT-4.5	Qwen3.5 Plus
Epoch Capabilities Index	136.74	146.78
ARC-AGI-2	0.8%	—
SimpleBench	34.5%	—
ARC-AGI-1	10.3%	—
Chess Puzzles	—	22%
EnigmaEval	3.2%	—
LiveBench Reasoning	71.1%	—
LMArena Hard Prompts	1403	—
Mystery Game Puzzles	—	17%
DTBench	—	80.5%
LiveBench Data Analysis	64.3%	—
LMCA	—	36.4%
ForecastBench	61.7	—
LiveBench	69%	—

Math Qwen3.5 Plus leads

GPT-4.5: 32.6 (#211), Qwen3.5 Plus: 49.6 (#61)

Math benchmarks
Benchmark	GPT-4.5	Qwen3.5 Plus
OTIS Mock AIME 2024-2025	37.8%	86.7%
LiveBench Math	69.3%	—
LMArena Math	1412	—
MATH Level 5	78.6%	—
FrontierMath (Feb 2025 set)	—	21%
FrontierMath Tier 4 (v1)	—	2.1%

Knowledge Qwen3.5 Plus leads

GPT-4.5: 32.5 (#211), Qwen3.5 Plus: 46.0 (#83)

Knowledge benchmarks
Benchmark	GPT-4.5	Qwen3.5 Plus
GPQA Diamond	68.7%	84.8%
Humanity's Last Exam	5.4%	—
SimpleQA Verified	—	25.4%
Confabulations	13.6%	—
Vectara Hallucination Rate	—	10.7%
LMArena Expert	1394	—

Multimodal Not comparable

GPT-4.5: 37.6 (#71), Qwen3.5 Plus: —

Multimodal benchmarks
Benchmark	GPT-4.5	Qwen3.5 Plus
LMArena Vision	1195	—
VPCT	45%	—

Multilingual Not comparable

GPT-4.5: 52.5 (#83), Qwen3.5 Plus: —

Multilingual benchmarks
Benchmark	GPT-4.5	Qwen3.5 Plus
LMArena Non-English	1413	—
LMArena Chinese	1421	—
LMArena French	1418	—
LMArena German	1457	—
LMArena Japanese	1416	—
LMArena Korean	1392	—
LMArena Russian	1419	—

Instruction Following Not comparable

GPT-4.5: 72.6 (#134), Qwen3.5 Plus: —

Instruction Following benchmarks
Benchmark	GPT-4.5	Qwen3.5 Plus
LiveBench Instruction Following	72.3%	—
LMArena Instruction Following	1404	—

Long Context Qwen3.5 Plus leads

GPT-4.5: 40.4 (#155), Qwen3.5 Plus: 43.0 (#113)

Long Context benchmarks
Benchmark	GPT-4.5	Qwen3.5 Plus
Fiction.LiveBench	63.9%	—
CL-bench	—	19.8%
CL-bench Life	—	12.4%
LMArena Longer Query	1406	—

Writing & Preference Not comparable

GPT-4.5: 56.9 (#134), Qwen3.5 Plus: —

Writing & Preference benchmarks
Benchmark	GPT-4.5	Qwen3.5 Plus
LMArena Text	1417	—
LMArena Creative Writing	1394	—
Short-Story Creative Writing	75.6%	—
EQ-Bench Creative Writing	1258	—
LMArena Multi-Turn	1444	—
LiveBench Language	61.5%	—

Frequently asked questions

Is GPT-4.5 better than Qwen3.5 Plus?