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Muse Spark 1.1 vs Qwen3.8 27B

Qwen3.8 27B leads Muse Spark 1.1 on coding, 74.2 to 70.3 on the Vibe Coding Index, and Qwen3.8 27B costs 1.7x less per output token ($2.55 vs $4.25 per million). Updated October 22, 2026; 71 benchmarks have a result for both.

Replace Muse Spark 1.1 Replace Qwen3.8 27B
Muse Spark 1.1Meta
Coding
70.3
Overall
67.0
Output $/M
$4.25
56
Qwen3.8 27BQwen
Coding
74.2
Overall
59.6
Output $/M
$2.55
13
vs boards won of 71 shared, 2 tied

Muse Spark 1.1 or Qwen3.8 27B: which to pick

Pick Qwen3.8 27B for coding: it scores 74.2 on the Vibe Coding Index against 70.3 for Muse Spark 1.1.

Pick Muse Spark 1.1 for a lower cost per solved task ($0.43 against $1.26) and a larger context window (1.05M against 1M tokens).

Model AMuse Spark 1.1Meta70.3/1003 independent benchmarks$0.43 per solved taskModel BQwen3.8 27BQwen74.2/1004 independent benchmarks$1.26 per solved task
Shared results
71
Muse Spark 1.1 only
33
Qwen3.8 27B only
14
Like-for-like categories
7 of 9

Only benchmarks that tested both models count toward a pick; a result only one model has is shown but not compared.

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
Muse Spark 1.1 70.3 from 3 benchmarks, Qwen3.8 27B 74.2 from 4 benchmarks.
Widest category
Math, 10.8 points apart on average over 3 shared benchmarks.
Widest single gap
ProofBench: Muse Spark 1.1 39.0% against Qwen3.8 27B 16.0%, 23.0 points apart on a 0 to 100 scale.
Output price
Muse Spark 1.1 $4.25 against Qwen3.8 27B $2.55 per million output tokens, 1.7x apart.
Context window
Muse Spark 1.1 takes 1.05M tokens, Qwen3.8 27B 1M.

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
CategoryMuse Spark 1.1BarsQwen3.8 27BTies
Coding951 tie
Intelligence101 tie
Agentic work23
Reasoning63
Math30
Knowledge80
General272
All shared boards56132 ties
CodingLike-for-likeSix of these boards feed the Vibe Coding Index95
Coding benchmarks for Muse Spark 1.1 and Qwen3.8 27B
BenchmarkMuse Spark 1.1Qwen3.8 27BLeader
LiveBench codingNot measured86.8%Only Qwen3.8 27B measured
LMArena WebDev15421593Qwen3.8 27B
AA Coding Index71.368.1Muse Spark 1.1
LiveCodeBench (Vals AI)85.9%84.0%Muse Spark 1.1
SWE-bench Verified (Vals AI)82.0%86.0%Qwen3.8 27B
Vibe Code Bench (Vals AI)72.2%64.8%Muse Spark 1.1
Code migration (Vals AI)31.1%14.2%Muse Spark 1.1
ProgramBench (Vals AI)0.0%0.0%Tie
IOI (Vals AI)Not measured39.1%Only Qwen3.8 27B measured
Terminal-Bench 2.1 (Vals AI)69.3%58.4%Muse Spark 1.1
SkillsBench (Vals AI)59.2%38.1%Muse Spark 1.1
CyberBench (Vals AI)Not measured67.8%Only Qwen3.8 27B measured
SciCode58.8%46.6%Muse Spark 1.1
LMArena Text: coding14981483Muse Spark 1.1
LMArena Text: software and IT14981478Muse Spark 1.1
LMArena WebDev: React15321602Qwen3.8 27B
LMArena WebDev: HTML15401570Qwen3.8 27B
LMArena WebDev: from an image15401577Qwen3.8 27B
SWE Atlas: Codebase QnA42.2%Not measuredOnly Muse Spark 1.1 measured
SWE Atlas: Test Writing41.5%Not measuredOnly Muse Spark 1.1 measured
Neither model has a result on the other 23 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for Muse Spark 1.1 and Qwen3.8 27B
BenchmarkMuse Spark 1.1Qwen3.8 27BLeader
AA Intelligence Index33.733.7Tie
Epoch Capabilities Index154.1151.7Muse Spark 1.1
Agentic workLike-for-likePublic boards, shown as published, kept out of the index23
Agentic work benchmarks for Muse Spark 1.1 and Qwen3.8 27B
BenchmarkMuse Spark 1.1Qwen3.8 27BLeader
AA Agentic Index25.845.8Qwen3.8 27B
Design Arena: agents building web apps1207Not measuredOnly Muse Spark 1.1 measured
Design Arena: agents building full-stack apps1199Not measuredOnly Muse Spark 1.1 measured
Design Arena: agents building mobile apps1175Not measuredOnly Muse Spark 1.1 measured
Design Arena: agents building Android apps1178Not measuredOnly Muse Spark 1.1 measured
Design Arena: agents building Godot games1103Not measuredOnly Muse Spark 1.1 measured
Design Arena: agents building games1183Not measuredOnly Muse Spark 1.1 measured
Design Arena: HTML slides1145Not measuredOnly Muse Spark 1.1 measured
Design Arena: PowerPoint slides1134Not measuredOnly Muse Spark 1.1 measured
Design Arena: spreadsheets1021Not measuredOnly Muse Spark 1.1 measured
LiveBench researchNot measured59.4%Only Qwen3.8 27B measured
LiveBench browserNot measured32.0%Only Qwen3.8 27B measured
LiveBench long agenticNot measured27.9%Only Qwen3.8 27B measured
Finance Agent (Vals AI)57.2%48.5%Muse Spark 1.1
Tax Agent Bench (Vals AI)Not measured30.9%Only Qwen3.8 27B measured
Legal Research Bench (Vals AI)38.0%36.1%Muse Spark 1.1
Excel Modeling Benchmark (Vals AI)56.4%59.7%Qwen3.8 27B
Terminal-Bench-Science (Vals AI)Not measured0.0%Only Qwen3.8 27B measured
Time Horizon Index (Vals AI)1.7%Not measuredOnly Muse Spark 1.1 measured
APEX-Agents31.8%47.5%Qwen3.8 27B
Vending-Bench 2$6,520Not measuredOnly Muse Spark 1.1 measured
MCP Atlas88.1%Not measuredOnly Muse Spark 1.1 measured
Neither model has a result on the other 20 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index63
Reasoning benchmarks for Muse Spark 1.1 and Qwen3.8 27B
BenchmarkMuse Spark 1.1Qwen3.8 27BLeader
GPQA Diamond91.2%88.9%Muse Spark 1.1
LiveBench reasoningNot measured80.0%Only Qwen3.8 27B measured
MMMU Pro (Vals AI)86.6%83.9%Muse Spark 1.1
GPQA Diamond (Artificial Analysis run)89.8%90.5%Qwen3.8 27B
Humanity's Last Exam (Artificial Analysis run)46.2%33.9%Muse Spark 1.1
ARC-AGINot measured87.5%Only Qwen3.8 27B measured
ARC-AGI-2Not measured42.4%Only Qwen3.8 27B measured
Chess puzzles34.0%Not measuredOnly Muse Spark 1.1 measured
LMArena Text: hard prompts14851459Muse Spark 1.1
LMArena Text: expert14781479Qwen3.8 27B
LMArena Text: hard prompts in English14801461Muse Spark 1.1
LMArena Vision: diagrams13051285Muse Spark 1.1
LMArena Vision: homework12871295Qwen3.8 27B
Neither model has a result on the other 10 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index30
Math benchmarks for Muse Spark 1.1 and Qwen3.8 27B
BenchmarkMuse Spark 1.1Qwen3.8 27BLeader
ProofBench39.0%16.0%Muse Spark 1.1
LMArena Text: math14821455Muse Spark 1.1
LMArena Text: mathematical work14871458Muse Spark 1.1
MathArena42.5%Not measuredOnly Muse Spark 1.1 measured
Neither model has a result on the other 10 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index80
Knowledge benchmarks for Muse Spark 1.1 and Qwen3.8 27B
BenchmarkMuse Spark 1.1Qwen3.8 27BLeader
MMLU Pro88.7%84.3%Muse Spark 1.1
LegalBench (Vals AI)85.0%82.4%Muse Spark 1.1
CorpFin (Vals AI)71.3%Not measuredOnly Muse Spark 1.1 measured
TaxEval (Vals AI)79.7%70.8%Muse Spark 1.1
MortgageTax (Vals AI)66.1%64.9%Muse Spark 1.1
MedCode (Vals AI)Not measured28.7%Only Qwen3.8 27B measured
SimpleQA Verified57.8%Not measuredOnly Muse Spark 1.1 measured
LMArena Text: science14841467Muse Spark 1.1
LMArena Text: medicine and healthcare14791437Muse Spark 1.1
LMArena Text: legal and government14811447Muse Spark 1.1
LMArena Text: business and finance14701438Muse Spark 1.1
PRBench Finance55.0%Not measuredOnly Muse Spark 1.1 measured
PRBench Legal57.0%Not measuredOnly Muse Spark 1.1 measured
Neither model has a result on the other 7 boards here
Web designDirectional onlyPublic boards, shown as published, kept out of the index9 boards, none shared
Web design benchmarks for Muse Spark 1.1 and Qwen3.8 27B
BenchmarkMuse Spark 1.1Qwen3.8 27BLeader
Design Arena: websites1270Not measuredOnly Muse Spark 1.1 measured
Design Arena: UI components1287Not measuredOnly Muse Spark 1.1 measured
Design Arena: game dev1269Not measuredOnly Muse Spark 1.1 measured
Design Arena: data viz1267Not measuredOnly Muse Spark 1.1 measured
Design Arena: 3D1259Not measuredOnly Muse Spark 1.1 measured
Design Arena: all code categories1276Not measuredOnly Muse Spark 1.1 measured
Design Arena: SVG1234Not measuredOnly Muse Spark 1.1 measured
Design Arena: ASCII art1269Not measuredOnly Muse Spark 1.1 measured
LiveBench designNot measured75.9%Only Qwen3.8 27B measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index272
General benchmarks for Muse Spark 1.1 and Qwen3.8 27B
BenchmarkMuse Spark 1.1Qwen3.8 27BLeader
LiveBench data analysisNot measured76.6%Only Qwen3.8 27B measured
Public Benefits Bench (Vals AI)61.3%Not measuredOnly Muse Spark 1.1 measured
SAGE (Vals AI)45.6%52.4%Qwen3.8 27B
MedScribe (Vals AI)88.9%83.8%Muse Spark 1.1
Vals Multimodal Index66.7%Not measuredOnly Muse Spark 1.1 measured
Long context reasoning (AA-LCR)77.7%82.0%Qwen3.8 27B
DTBench94.4%88.0%Muse Spark 1.1
LMCA49.9%41.4%Muse Spark 1.1
Surface Evolver Bench52.5%45.0%Muse Spark 1.1
LMArena Text14781440Muse Spark 1.1
LMArena Text: instruction following14571436Muse Spark 1.1
LMArena Text: creative writing14351383Muse Spark 1.1
LMArena Vision12931269Muse Spark 1.1
LMArena Text: English14781448Muse Spark 1.1
LMArena Text: non-English14711428Muse Spark 1.1
LMArena Text: Chinese15151501Muse Spark 1.1
LMArena Text: German14691443Muse Spark 1.1
LMArena Text: Japanese14501387Muse Spark 1.1
LMArena Text: Korean14591384Muse Spark 1.1
LMArena Text: French14921465Muse Spark 1.1
LMArena Text: Spanish14641449Muse Spark 1.1
LMArena Text: Russian14821415Muse Spark 1.1
LMArena Text: Polish14991439Muse Spark 1.1
LMArena Text: multi-turn14841440Muse Spark 1.1
LMArena Text: longer queries14621448Muse Spark 1.1
LMArena Text: writing and language14481405Muse Spark 1.1
LMArena Text: entertainment and media14381393Muse Spark 1.1
LMArena Vision: English12921267Muse Spark 1.1
LMArena Vision: Chinese13481326Muse Spark 1.1
LMArena Vision: reading text13011281Muse Spark 1.1
LMArena Vision: humor12881235Muse Spark 1.1
LMArena Vision: creative writing12531237Muse Spark 1.1
LMArena Document1465Not measuredOnly Muse Spark 1.1 measured
MultiChallenge75.3%Not measuredOnly Muse Spark 1.1 measured
EQ-Bench 41260Not measuredOnly Muse Spark 1.1 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 Muse Spark 1.1 and Qwen3.8 27B
BenchmarkMuse Spark 1.1Qwen3.8 27BLeader
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

Muse Spark 1.1$0.0034Fits in one request
Qwen3.8 27B$0.0017Fits in one request

Qwen3.8 27B costs less

Repository review

50K input + 3K output tokens

Muse Spark 1.1$0.075Fits in one request
Qwen3.8 27B$0.029Fits in one request

Qwen3.8 27B costs less

Agent loop

200K input + 10K output tokens

Muse Spark 1.1$0.292Fits in one request
Qwen3.8 27B$0.111Fits in one request

Qwen3.8 27B 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 Muse Spark 1.1 and Qwen3.8 27B
SpecificationMeta Muse Spark 1.1Qwen3.8 27B
MakerMetaQwen
WeightsNo public weights listedOpen weights
ReleasedJuly 16, 2026August 14, 2026
Context window1.05M1M
Input $/Mtok$1.25$0.425
Output $/Mtok$4.25$2.55
Coding index70.374.2
Independent measurements behind it34
Cost per solved task$0.43$1.26
SourceOpenRouter listingOpenRouter listing

Questions

Is Muse Spark 1.1 better than Qwen3.8 27B for coding?

Pick Qwen3.8 27B for coding: it scores 74.2 on the Vibe Coding Index against 70.3 for Muse Spark 1.1. Pick Muse Spark 1.1 for a lower cost per solved task ($0.43 against $1.26) and a larger context window (1.05M against 1M tokens).

Which is cheaper, Muse Spark 1.1 or Qwen3.8 27B?

Muse Spark 1.1 costs $1.25 per million input tokens and $4.25 per million output tokens; Qwen3.8 27B costs $0.425 and $2.55. Per solved SWE-bench Verified task, Muse Spark 1.1 costs $0.43 and Qwen3.8 27B $1.26.

Which has the bigger context window, Muse Spark 1.1 or Qwen3.8 27B?

Muse Spark 1.1, with 1.05M tokens against 1M.

How many benchmarks is the Muse Spark 1.1 vs Qwen3.8 27B comparison based on?

71 benchmarks have a result for both models as of October 22, 2026. Muse Spark 1.1's coding index rests on 3 independent benchmarks and Qwen3.8 27B's on 4. Where only one model has a result, the page says so instead of naming a winner.

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