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Gemma 4 31B vs Muse Spark 1.3

Updated October 21, 2026. 55 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.

Replace Gemma 4 31B Replace Muse Spark 1.3
Gemma 4 31BGoogle
Coding
38.3
Overall
14.7
Output $/M
$0.40
1
Muse Spark 1.3Meta
Coding
79.7
Overall
48.1
Output $/M
$4.25
54
vs boards won of 55 shared

Decision reading

Pick Muse Spark 1.3 for coding: it scores 79.7 on the Vibe Coding Index against 38.3 for Gemma 4 31B.

Pick Gemma 4 31B when output tokens cost 10.6x less, or when the benchmark that matters is LMArena Vision: homework, where it leads.

Model AGemma 4 31BGoogle38.3/1002 independent benchmarksNo cost per solved taskModel BMuse Spark 1.3Meta79.7/1002 independent benchmarksNo cost per solved task
Shared results
55
Gemma 4 31B only
13
Muse Spark 1.3 only
37
Like-for-like categories
8 of 9

Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.

Which one for your work

Each card is decided by one number both models carry. Where only one has it, the card says so and makes no call.

At a glance

Coding index
Gemma 4 31B 38.3 from 2 benchmarks, Muse Spark 1.3 79.7 from 2 benchmarks.
Widest category
Agentic work, 44.6 points apart on average over 4 shared benchmarks.
Widest single gap
LiveBench browser: Gemma 4 31B 4.0% against Muse Spark 1.3 80.0%, 76.0 points apart on a 0 to 100 scale.
Output price
Gemma 4 31B $0.40 against Muse Spark 1.3 $4.25 per million output tokens, 10.6x apart.
Context window
Gemma 4 31B takes 262K tokens, Muse Spark 1.3 1.05M.

Benchmark by benchmark

First the score: boards each model leads, per category, where both have a result. Then every board, a category to a fold; bars are each result on a 0 to 100 scale, so compare the two in a row, not one row with another.

Boards won, where both have a result
CategoryGemma 4 31BBarsMuse Spark 1.3Ties
Coding09
Intelligence02
Agentic work04
Reasoning17
Math03
Knowledge04
Web design01
General024
All shared boards154
CodingLike-for-likeFour of these boards feed the Vibe Coding Index09
Coding benchmarks for Gemma 4 31B and Muse Spark 1.3
BenchmarkGemma 4 31BMuse Spark 1.3Leader
LiveBench coding49.0%90.2%Muse Spark 1.3
LMArena WebDev13671659Muse Spark 1.3
AA Coding Index43.475.8Muse Spark 1.3
Terminal-Bench 4 (Vals AI)Not measured10.6%Only Muse Spark 1.3 measured
Vibe Code Bench (Vals AI)Not measured82.9%Only Muse Spark 1.3 measured
Code migration (Vals AI)Not measured27.6%Only Muse Spark 1.3 measured
ProgramBench (Vals AI)Not measured0.5%Only Muse Spark 1.3 measured
IOI (Vals AI)Not measured43.9%Only Muse Spark 1.3 measured
Terminal-Bench 2.1 (Vals AI)Not measured72.3%Only Muse Spark 1.3 measured
CyberBench (Vals AI)Not measured69.4%Only Muse Spark 1.3 measured
SciCode45.5%59.7%Muse Spark 1.3
Terminal-Bench Hard (Artificial Analysis run)36.4%Not measuredOnly Gemma 4 31B measured
FrontierSWENot measured25.8%Only Muse Spark 1.3 measured
WeirdML52.3%Not measuredOnly Gemma 4 31B measured
ALE-Bench925.51688.3Muse Spark 1.3
LMArena Text: coding14591510Muse Spark 1.3
LMArena Text: software and IT14631511Muse Spark 1.3
LMArena WebDev: React13591672Muse Spark 1.3
LMArena WebDev: HTML13801653Muse Spark 1.3
LMArena WebDev: from an imageNot measured1640Only Muse Spark 1.3 measured
Neither model has a result on the other 18 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Gemma 4 31B and Muse Spark 1.3
BenchmarkGemma 4 31BMuse Spark 1.3Leader
AA Intelligence Index14.748.1Muse Spark 1.3
Epoch Capabilities Index143.0157.2Muse Spark 1.3
Agentic workLike-for-likePublic boards, shown as published, kept out of the index04
Agentic work benchmarks for Gemma 4 31B and Muse Spark 1.3
BenchmarkGemma 4 31BMuse Spark 1.3Leader
AA Agentic Index4.255.5Muse Spark 1.3
Design Arena: agents building web appsNot measured1297Only Muse Spark 1.3 measured
Design Arena: agents building full-stack appsNot measured1295Only Muse Spark 1.3 measured
Design Arena: agents building mobile appsNot measured1217Only Muse Spark 1.3 measured
Design Arena: agents building Godot gamesNot measured1241Only Muse Spark 1.3 measured
Design Arena: PowerPoint slidesNot measured1244Only Muse Spark 1.3 measured
Design Arena: spreadsheetsNot measured1048Only Muse Spark 1.3 measured
LiveBench research44.4%68.6%Muse Spark 1.3
LiveBench browser4.0%80.0%Muse Spark 1.3
LiveBench long agentic13.3%40.4%Muse Spark 1.3
Finance Agent (Vals AI)Not measured58.9%Only Muse Spark 1.3 measured
Tax Agent Bench (Vals AI)Not measured36.0%Only Muse Spark 1.3 measured
Legal Research Bench (Vals AI)Not measured40.9%Only Muse Spark 1.3 measured
Excel Modeling Benchmark (Vals AI)Not measured62.7%Only Muse Spark 1.3 measured
Terminal-Bench-Science (Vals AI)Not measured4.3%Only Muse Spark 1.3 measured
τ²-Bench Telecom65.5%Not measuredOnly Gemma 4 31B measured
APEX-AgentsNot measured58.6%Only Muse Spark 1.3 measured
Neither model has a result on the other 22 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index17
Reasoning benchmarks for Gemma 4 31B and Muse Spark 1.3
BenchmarkGemma 4 31BMuse Spark 1.3Leader
LiveBench reasoning68.3%89.7%Muse Spark 1.3
GPQA Diamond (Artificial Analysis run)85.7%94.1%Muse Spark 1.3
Humanity's Last Exam (Artificial Analysis run)23.6%48.7%Muse Spark 1.3
GPQA Diamond (Epoch AI run)75.8%Not measuredOnly Gemma 4 31B measured
Chess puzzlesNot measured37.0%Only Muse Spark 1.3 measured
Mystery game puzzlesNot measured25.0%Only Muse Spark 1.3 measured
LMArena Text: hard prompts14481503Muse Spark 1.3
LMArena Text: expert14641519Muse Spark 1.3
LMArena Text: hard prompts in English14561500Muse Spark 1.3
LMArena Vision: diagrams12831330Muse Spark 1.3
LMArena Vision: homework13101296Gemma 4 31B
Neither model has a result on the other 10 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index03
Math benchmarks for Gemma 4 31B and Muse Spark 1.3
BenchmarkGemma 4 31BMuse Spark 1.3Leader
OTIS Mock AIME73.3%99.2%Muse Spark 1.3
FrontierMath, tiers 1 to 3Not measured74.4%Only Muse Spark 1.3 measured
FrontierMath, tier 4Not measured46.3%Only Muse Spark 1.3 measured
ProofBenchNot measured58.0%Only Muse Spark 1.3 measured
LMArena Text: math14631497Muse Spark 1.3
LMArena Text: mathematical work14651491Muse Spark 1.3
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index04
Knowledge benchmarks for Gemma 4 31B and Muse Spark 1.3
BenchmarkGemma 4 31BMuse Spark 1.3Leader
CaseLaw (Vals AI)52.6%Not measuredOnly Gemma 4 31B measured
MortgageTax (Vals AI)61.4%Not measuredOnly Gemma 4 31B measured
SimpleQA Verified10.4%Not measuredOnly Gemma 4 31B measured
LMArena Text: science14571507Muse Spark 1.3
LMArena Text: medicine and healthcare14511493Muse Spark 1.3
LMArena Text: legal and government14381499Muse Spark 1.3
LMArena Text: business and finance14301490Muse Spark 1.3
Neither model has a result on the other 10 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index01
Web design benchmarks for Gemma 4 31B and Muse Spark 1.3
BenchmarkGemma 4 31BMuse Spark 1.3Leader
Design Arena: websitesNot measured1356Only Muse Spark 1.3 measured
Design Arena: UI componentsNot measured1352Only Muse Spark 1.3 measured
Design Arena: game devNot measured1329Only Muse Spark 1.3 measured
Design Arena: data vizNot measured1343Only Muse Spark 1.3 measured
Design Arena: 3DNot measured1359Only Muse Spark 1.3 measured
Design Arena: all code categoriesNot measured1353Only Muse Spark 1.3 measured
Design Arena: SVGNot measured1300Only Muse Spark 1.3 measured
Design Arena: ASCII artNot measured1280Only Muse Spark 1.3 measured
LiveBench design58.4%74.8%Muse Spark 1.3
GeneralLike-for-likePublic boards, shown as published, kept out of the index024
General benchmarks for Gemma 4 31B and Muse Spark 1.3
BenchmarkGemma 4 31BMuse Spark 1.3Leader
LiveBench data analysis53.3%79.6%Muse Spark 1.3
SAGE (Vals AI)55.0%Not measuredOnly Gemma 4 31B measured
IFBench75.6%Not measuredOnly Gemma 4 31B measured
Long context reasoning (AA-LCR)69.7%83.0%Muse Spark 1.3
DTBench82.7%96.5%Muse Spark 1.3
LMCA39.3%53.9%Muse Spark 1.3
Surface Evolver Bench30.6%Not measuredOnly Gemma 4 31B measured
LMArena Text14431490Muse Spark 1.3
LMArena Text: instruction following14331479Muse Spark 1.3
LMArena Text: creative writing14171462Muse Spark 1.3
LMArena Vision12761308Muse Spark 1.3
LMArena Text: English14511495Muse Spark 1.3
LMArena Text: non-English14301481Muse Spark 1.3
LMArena Text: Chinese14751532Muse Spark 1.3
LMArena Text: GermanNot measured1513Only Muse Spark 1.3 measured
LMArena Text: JapaneseNot measured1470Only Muse Spark 1.3 measured
LMArena Text: KoreanNot measured1490Only Muse Spark 1.3 measured
LMArena Text: French14361511Muse Spark 1.3
LMArena Text: Spanish14421496Muse Spark 1.3
LMArena Text: Russian14601491Muse Spark 1.3
LMArena Text: Polish14331490Muse Spark 1.3
LMArena Text: multi-turn14521487Muse Spark 1.3
LMArena Text: longer queries14461488Muse Spark 1.3
LMArena Text: writing and language14321470Muse Spark 1.3
LMArena Text: entertainment and media14051457Muse Spark 1.3
LMArena Vision: English12711298Muse Spark 1.3
LMArena Vision: Chinese13261384Muse Spark 1.3
LMArena Vision: reading text12821319Muse Spark 1.3
LMArena Vision: humor12801293Muse Spark 1.3
LMArena Vision: captioning1218Not measuredOnly Gemma 4 31B measured
LMArena Vision: recognizing things1226Not measuredOnly Gemma 4 31B measured
LMArena Vision: creative writing12851296Muse Spark 1.3
LMArena Document1425Not measuredOnly Gemma 4 31B measured
Neither model has a result on the other 13 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Gemma 4 31B and Muse Spark 1.3
BenchmarkGemma 4 31BMuse Spark 1.3Leader
Neither model has a result on 5 boards here

What each workload costs

Three fixed token mixes at each model's listed price, so per-token rates become a bill.

Chat turn

1K input + 500 output tokens

Gemma 4 31B$0.0004Fits in one request
Muse Spark 1.3$0.0034Fits in one request

Gemma 4 31B costs less

Repository review

50K input + 3K output tokens

Gemma 4 31B$0.011Fits in one request
Muse Spark 1.3$0.075Fits in one request

Gemma 4 31B costs less

Agent loop

200K input + 10K output tokens

Gemma 4 31B$0.044Fits in one request
Muse Spark 1.3$0.292Fits in one request

Gemma 4 31B costs less

Listed OpenRouter rates, without cache or batch discounts. A workload that does not fit a model's context window would need splitting.

Specification differences

The leading value in a row is marked; a row with a missing value names no leader. Our two rows are marked in red.

Specifications of Gemma 4 31B and Muse Spark 1.3
SpecificationGoogle Gemma 4 31BMeta Muse Spark 1.3
MakerGoogleMeta
WeightsOpen weightsNo public weights listed
ReleasedApril 2, 2026September 2, 2026
Context window262K1.05M
Input $/Mtok$0.20$1.25
Output $/Mtok$0.40$4.25
Coding index38.379.7
Independent measurements behind it22
Cost per solved taskNot computableNot computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Gemma 4 31B better than Muse Spark 1.3 for coding?

Pick Muse Spark 1.3 for coding: it scores 79.7 on the Vibe Coding Index against 38.3 for Gemma 4 31B. Pick Gemma 4 31B when output tokens cost 10.6x less, or when the benchmark that matters is LMArena Vision: homework, where it leads.

Which is cheaper, Gemma 4 31B or Muse Spark 1.3?

Gemma 4 31B costs $0.20 per million input tokens and $0.40 per million output tokens; Muse Spark 1.3 costs $1.25 and $4.25. Cost per solved task is known for neither of them.

Which has the bigger context window, Gemma 4 31B or Muse Spark 1.3?

Muse Spark 1.3, with 1.05M tokens against 262K.

How many benchmarks is the Gemma 4 31B vs Muse Spark 1.3 comparison based on?

55 benchmarks have a result for both models as of October 21, 2026. Gemma 4 31B's coding index rests on 2 independent benchmarks and Muse Spark 1.3's on 2. Where only one model has a result, the page says so instead of naming a winner.

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<iframe src="https://llmbenchmark.ai/embed/compare/gemma-4-31b-it-vs-meta-muse-spark-1-3" title="Gemma 4 31B vs Muse Spark 1.3, LLMBenchmark.ai" width="100%" height="360" style="border:0;max-width:100%" loading="lazy"></iframe>
<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/gemma-4-31b-it-vs-meta-muse-spark-1-3">LLMBenchmark.ai, Gemma 4 31B vs Muse Spark 1.3</a></p>