Noometry

Model comparison

Grok 4.3 vs Qwen3.5 Plus

Grok 4.3 and Qwen3.5 Plus score almost the same on the Noometry Index (43.8 vs 42.9), so choose on price, context window or the category you care about most.

Last verified . 9 shared benchmarks.

Grok 4.3 xAI

43.8

Rank #86 Confirmed

Qwen3.5 Plus Alibaba (Qwen)

42.9

Rank #106 Confirmed

Summary

  • They share 9 benchmarks with published results for both. Grok 4.3 scores higher in 2 categories and Qwen3.5 Plus in 2 categories; 3 gaps are clear of the uncertainty.
  • The widest gap is in knowledge, where Grok 4.3 leads 52.5 to 46.0.
  • The biggest single-benchmark swing is DTBench: 90.7% for Grok 4.3 and 80.5% for Qwen3.5 Plus.
  • Qwen3.5 Plus is cheaper at $0.40 / $2.40 per million input/output tokens, against $1.25 / $2.50 for Grok 4.3.

Side by side

Grok 4.3Qwen3.5 Plus
ProviderxAIAlibaba (Qwen)
Noometry Index43.842.9
Released2026-04-172026-02-16
WeightsProprietaryProprietary
Context window1M1M
Max output30K66K
Input $ / M tokens$1.25$0.40
Output $ / M tokens$2.50$2.40
Results tracked4015

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Category by category

Coding Not comparable

Grok 4.3: 41.6 (#121), Qwen3.5 Plus: —

BenchmarkGrok 4.3Qwen3.5 Plus
ALE-Bench944.17621.92
LMArena WebDev1357—
SciCode47.3%—
WeirdML49.9%—
LMArena Coding1415—

Agentic & Tool Use Not comparable

Grok 4.3: 27.7 (#99), Qwen3.5 Plus: —

BenchmarkGrok 4.3Qwen3.5 Plus
Vending-Bench 235.260.54
GDP.pdf8%—
LMArena Search1165—

Reasoning Grok 4.3 leads

Grok 4.3: 35.9 (#68), Qwen3.5 Plus: 32.8 (#74)

BenchmarkGrok 4.3Qwen3.5 Plus
Chess Puzzles25%22%
DTBench90.7%80.5%
LMCA38.3%36.4%
Epoch Capabilities Index149.16146.78
NYT Connections (extended)55.2%—
CritPt8%—
LMArena Hard Prompts1396—
Mystery Game Puzzles—17%
ForecastBench60.3—

Math Qwen3.5 Plus leads

Grok 4.3: 46.0 (#74), Qwen3.5 Plus: 49.6 (#61)

BenchmarkGrok 4.3Qwen3.5 Plus
OTIS Mock AIME 2024-202593.3%86.7%
FrontierMath (Tiers 1-3)42.8%—
FrontierMath Tier 414.6%—
ProofBench11%—
LMArena Math1388—
FrontierMath (Feb 2025 set)—21%
FrontierMath Tier 4 (v1)—2.1%

Knowledge Grok 4.3 leads

Grok 4.3: 52.5 (#62), Qwen3.5 Plus: 46.0 (#83)

BenchmarkGrok 4.3Qwen3.5 Plus
GPQA Diamond88.8%84.8%
SimpleQA Verified33.2%25.4%
Vectara Hallucination Rate—10.7%
LMArena Expert1385—

Multimodal Not comparable

Grok 4.3: 31.6 (#104), Qwen3.5 Plus: —

BenchmarkGrok 4.3Qwen3.5 Plus
LMArena Vision1229—
Blueprint-Bench 20%—

Multilingual Not comparable

Grok 4.3: 50.5 (#120), Qwen3.5 Plus: —

BenchmarkGrok 4.3Qwen3.5 Plus
LMArena Non-English1385—
LMArena Chinese1422—
LMArena French1412—
LMArena German1395—
LMArena Japanese1379—
LMArena Korean1356—
LMArena Russian1399—
LMArena Spanish1398—

Instruction Following Not comparable

Grok 4.3: 72.1 (#140), Qwen3.5 Plus: —

BenchmarkGrok 4.3Qwen3.5 Plus
LMArena Instruction Following1366—

Long Context Too close to call

Grok 4.3: 42.5 (#123), Qwen3.5 Plus: 43.0 (#113)

BenchmarkGrok 4.3Qwen3.5 Plus
CL-bench—19.8%
CL-bench Life—12.4%
LMArena Longer Query1393—

Writing & Preference Not comparable

Grok 4.3: 58.5 (#118), Qwen3.5 Plus: —

BenchmarkGrok 4.3Qwen3.5 Plus
LMArena Text1397—
LMArena Creative Writing1380—
EQ-Bench 41075—
LMArena Multi-Turn1406—

Frequently asked questions

Is Grok 4.3 better than Qwen3.5 Plus?

Grok 4.3 and Qwen3.5 Plus score almost the same on the Noometry Index (43.8 vs 42.9), so choose on price, context window or the category you care about most.

Which is cheaper, Grok 4.3 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; Grok 4.3 lists at $1.25 and $2.50.

Which has the bigger context window?

Both accept 1M tokens.

How many benchmarks do Grok 4.3 and Qwen3.5 Plus share?

9 benchmarks have published results for both models. Grok 4.3 has 40 scored results on Noometry and Qwen3.5 Plus has 15.

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