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Model comparison

Gemma 4 12B vs Qwen3.5-27B

Data verified

Head-to-head evidence from 15 shared benchmark results across 6 categories. Overall scores shown here use the public BenchAlign v5 ranking lane.

47.29/100
Margin
13.4pts
winning →
60.7/100
0 category wins2 category wins

Public leaderboard positions: Gemma 4 12B #137 (Estimated); Qwen3.5-27B #45 (Supported). Intervals and evidence labels describe ranking uncertainty, not a guarantee for a specific workload.

Evidence parity. Gemma 4 12B and Qwen3.5-27B share 15 comparable benchmark results. 2 of 8 categories are comparable. 8 results are unique to Gemma 4 12B; 13 to Qwen3.5-27B.

Updated July 23, 2026
Shared results
15
Gemma 4 12B only
8
Qwen3.5-27B only
13
Comparable categories
2 / 8

Pick Qwen3.5-27B if you want the stronger benchmark profile. Gemma 4 12B only becomes the better choice if its workflow or ecosystem matters more than the raw scoreboard.

Confidence note. This is a partial-evidence comparison with 15 shared benchmark results across 6 evidence categories; 2 of 8 categories currently have scoreable aggregates for both models. Treat the verdict as directional until coverage is more balanced.

Why this result

Qwen3.5-27B is clearly ahead on the BenchAlign aggregate, 60.7 to 47.29. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Qwen3.5-27B's sharpest advantage is in reasoning, where it averages 60.6 against 43.4. The single biggest benchmark swing on the page is MMLU-Pro, 77.2% to 86.1%.

Qwen3.5-27B gives you the larger context window at 262K, compared with 256K for Gemma 4 12B.

Category breakdown

Exact category averages are shown below. Not measured means BenchLM does not have enough sourced public coverage for that model and category.

Category scores and score margins for Gemma 4 12B and Qwen3.5-27B
CategoryGemma 4 12BΔQwen3.5-27B
ReasoningGemma 4 12B43.4Margin 17.2Qwen3.5-27B60.6
KnowledgeGemma 4 12B77.5Margin 5.2Qwen3.5-27B82.7
AgenticGemma 4 12BNot measuredMarginNo overlapQwen3.5-27B52.0
CodingGemma 4 12BNot measuredMarginNo overlapQwen3.5-27B64.9
MathGemma 4 12B77.5MarginNo overlapQwen3.5-27BNot measured
MultilingualGemma 4 12BNot measuredMarginNo overlapQwen3.5-27B82.2
MultimodalGemma 4 12B69.1MarginNo overlapQwen3.5-27BNot measured
Inst. FollowingGemma 4 12BNot measuredMarginNo overlapQwen3.5-27B95.0

Decisive benchmark drivers

The largest measured benchmark gaps in this matchup, with exact reported values.

More
A · Gemma 4 12BB · Qwen3.5-27B
  1. MMLU-Pro

    Knowledge
    Source ↗
    A 77.2%B 86.1%
    Winner: Qwen3.5-27BΔ 8.9
    MMLU-Pro: Gemma 4 12B scored 77.2%; Qwen3.5-27B scored 86.1%. Qwen3.5-27B wins this benchmark.
  2. GPQA

    Knowledge
    Source ↗
    A 78.8%B 85.5%
    Winner: Qwen3.5-27BΔ 6.7
    GPQA: Gemma 4 12B scored 78.8%; Qwen3.5-27B scored 85.5%. Qwen3.5-27B wins this benchmark.

Operational comparison

Runtime and commercial metrics are compared only when both models have a complete sourced value.

MetricGemma 4 12BQwen3.5-27BComparison
Input / output priceUSD per 1M tokensGemma 4 12BNot availableQwen3.5-27B$0 input / $0 outputA complete price comparison is not available.
Generation speedtokens per secondGemma 4 12BNot availableQwen3.5-27BNot availableA complete speed comparison is not available.
First-answer latencyseconds to first tokenGemma 4 12BNot availableQwen3.5-27BNot availableA complete latency comparison is not available.
Context windowmaximum listed tokensGemma 4 12B256KQwen3.5-27B262KQwen3.5-27B lists the larger context window.

Benchmark Deep Dive

Agentic
BenchmarkGemma 4 12BQwen3.5-27BResult
τ²-bench resultsSource 36.3%93.9%Qwen3.5-27B leads
Terminal-Bench 2.0Source 41.6%Not comparable
BrowseCompSource 61%Not comparable
OSWorld-VerifiedSource 56.2%Not comparable
Gert LabsSource 39.41%Not comparable
Coding
BenchmarkGemma 4 12BQwen3.5-27BResult
AA-SciCodeSource 38.2%39.5%Qwen3.5-27B leads
SWE-bench VerifiedSource 72.4%Not comparable
SWE-RebenchSource 58.9%Not comparable
ReasoningQwen3.5-27B wins
BenchmarkGemma 4 12BQwen3.5-27BResult
BBHSource 53%Not comparable
MRCRv2Source 43.4%Not comparable
AA-LCRSource 55.3%67.3%Qwen3.5-27B leads
CritPtSource 0.0%0.9%Qwen3.5-27B leads
LongBench v2Source 60.6%Not comparable
KnowledgeQwen3.5-27B wins
BenchmarkGemma 4 12BQwen3.5-27BResult
GPQASource 78.8%85.5%Qwen3.5-27B leads
GPQA-DSource 78.8%Not comparable
MMLU-ProSource 77.2%86.1%Qwen3.5-27B leads
HLE w/o toolsSource 5.2%Not comparable
MMMLUSource 83.4%Not comparable
Artificial Analysis Intelligence IndexSource 22.0%33.8%Qwen3.5-27B leads
AA-GPQA DiamondSource 75.3%85.8%Qwen3.5-27B leads
AA-HLESource 14.8%22.2%Qwen3.5-27B leads
AA-Omniscience IndexSource -51.9%-42.0%Qwen3.5-27B leads
AA-Omniscience AccuracySource 16.0%21.0%Qwen3.5-27B leads
AA-Omniscience Hallucination RateSource 80.8%79.7%Qwen3.5-27B leads
SuperGPQASource 65.6%Not comparable
Math
BenchmarkGemma 4 12BQwen3.5-27BResult
AIME26Source 77.5%Not comparable
Multilingual
BenchmarkGemma 4 12BQwen3.5-27BResult
MMLU-ProXSource 82.2%Not comparable
Multimodal
BenchmarkGemma 4 12BQwen3.5-27BResult
MMMU-ProSource 69.1%Not comparable
MathVisionSource 79.7%86.0%Qwen3.5-27B leads
MedXpertQA (MM)Source 48.7%Not comparable
AA-MMMU-ProSource 69.7%75.0%Qwen3.5-27B leads
MMMUSource 82.3%Not comparable
MMVUSource 73.3%Not comparable
V*Source 93.7%Not comparable
Inst. Following
BenchmarkGemma 4 12BQwen3.5-27BResult
AA-IFBenchSource 73.5%75.6%Qwen3.5-27B leads
IFEvalSource 95%Not comparable
Frequently Asked Questions (3)

Which is better, Gemma 4 12B or Qwen3.5-27B?

Qwen3.5-27B is ahead on BenchLM's BenchAlign leaderboard, 60.7 to 47.29. The biggest single separator in this matchup is MMLU-Pro, where the scores are 77.2% and 86.1%.

Which is better for knowledge tasks, Gemma 4 12B or Qwen3.5-27B?

Qwen3.5-27B has the edge for knowledge tasks in this comparison, averaging 82.7 versus 77.5. Inside this category, Artificial Analysis Intelligence Index is the benchmark that creates the most daylight between them.

Which is better for reasoning, Gemma 4 12B or Qwen3.5-27B?

Qwen3.5-27B has the edge for reasoning in this comparison, averaging 60.6 versus 43.4. Inside this category, AA-LCR is the benchmark that creates the most daylight between them.

Related Comparisons

Last updated: July 23, 2026

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