Noometry

Model comparison

Qwen3.5 27B vs Solar Pro4

Qwen3.5 27B and Solar Pro4 score almost the same on the Noometry Index (41.9 vs 42.1), so choose on price, context window or the category you care about most.

Last verified . 18 shared benchmarks.

Qwen3.5 27B Alibaba (Qwen)

41.9

Rank #127 Confirmed

Solar Pro4 Upstage

42.1

Rank #121 Confirmed

Summary

  • They share 18 benchmarks with published results for both. Qwen3.5 27B scores higher in 5 categories and Solar Pro4 in 3 categories; 5 gaps are clear of the uncertainty.
  • Solar Pro4 is cheaper at $0.30 / $1.20 per million input/output tokens, against $0.30 / $2.40 for Qwen3.5 27B.
  • Solar Pro4 accepts more context: 524K tokens versus 262K.
  • Qwen3.5 27B has downloadable open weights; the other is API-only.

Side by side

Qwen3.5 27BSolar Pro4
ProviderAlibaba (Qwen)Upstage
Noometry Index41.942.1
Released2026-02-232026-08-06
WeightsOpenProprietary
Context window262K524K
Max output66K131K
Input $ / M tokens$0.30$0.30
Output $ / M tokens$2.40$1.20
Results tracked2818

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Category by category

Coding Solar Pro4 leads

Qwen3.5 27B: 38.9 (#168), Solar Pro4: 40.1 (#149)

BenchmarkQwen3.5 27BSolar Pro4
LMArena WebDev13581371
LMArena Coding14271437
WeirdML39.5%—
ALE-Bench349.45—

Agentic & Tool Use Not comparable

Qwen3.5 27B: —, Solar Pro4: —

BenchmarkQwen3.5 27BSolar Pro4
Vending-Bench 2201.98—

Reasoning Too close to call

Qwen3.5 27B: 27.5 (#117), Solar Pro4: 28.5 (#104)

BenchmarkQwen3.5 27BSolar Pro4
LMArena Hard Prompts14141399
NYT Connections (extended)47.9%—
Thematic Generalization45.5%—
DTBench82.4%—
LMCA34%—

Math Too close to call

Qwen3.5 27B: 38.8 (#127), Solar Pro4: 38.8 (#128)

BenchmarkQwen3.5 27BSolar Pro4
LMArena Math14291416
MathArena Final-Answer Competitions56.7%—

Knowledge Solar Pro4 leads

Qwen3.5 27B: 38.0 (#150), Solar Pro4: 39.8 (#129)

BenchmarkQwen3.5 27BSolar Pro4
LMArena Expert14281427
Vectara Hallucination Rate12.1%—

Multimodal Not comparable

Qwen3.5 27B: 39.4 (#59), Solar Pro4: —

BenchmarkQwen3.5 27BSolar Pro4
LMArena Vision1241—

Multilingual Qwen3.5 27B leads

Qwen3.5 27B: 50.8 (#115), Solar Pro4: 48.7 (#139)

BenchmarkQwen3.5 27BSolar Pro4
LMArena Non-English13901361
LMArena Chinese14781415
LMArena French14101397
LMArena German13931364
LMArena Japanese13451309
LMArena Korean13581382
LMArena Russian13901360
LMArena Spanish14071401

Instruction Following Too close to call

Qwen3.5 27B: 73.5 (#119), Solar Pro4: 72.7 (#132)

BenchmarkQwen3.5 27BSolar Pro4
LMArena Instruction Following13931377

Long Context Qwen3.5 27B leads

Qwen3.5 27B: 43.1 (#106), Solar Pro4: 42.1 (#130)

BenchmarkQwen3.5 27BSolar Pro4
LMArena Longer Query14131381

Writing & Preference Qwen3.5 27B leads

Qwen3.5 27B: 59.3 (#111), Solar Pro4: 56.5 (#138)

BenchmarkQwen3.5 27BSolar Pro4
LMArena Text14091386
LMArena Creative Writing13621316
LMArena Multi-Turn14101385

Frequently asked questions

Is Qwen3.5 27B better than Solar Pro4?

Qwen3.5 27B and Solar Pro4 score almost the same on the Noometry Index (41.9 vs 42.1), so choose on price, context window or the category you care about most.

Which is cheaper, Qwen3.5 27B or Solar Pro4?

Solar Pro4 is cheaper. It lists at $0.30 per million input tokens and $1.20 per million output tokens; Qwen3.5 27B lists at $0.30 and $2.40.

Is Qwen3.5 27B or Solar Pro4 better for coding?

Solar Pro4 scores higher on coding benchmarks: 40.1 versus 38.9 in the Noometry coding category.

Which has the bigger context window?

Solar Pro4 does, with 524K tokens against 262K.

How many benchmarks do Qwen3.5 27B and Solar Pro4 share?

18 benchmarks have published results for both models. Qwen3.5 27B has 28 scored results on Noometry and Solar Pro4 has 18.

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