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Muse Spark 1.3 vs Inkling Small

Muse Spark 1.3 leads Inkling Small on coding, 57.4 to 27.3 on the Vibe Coding Index, and Inkling Small costs 3.5x less per output token ($1.20 vs $4.25 per million). Updated October 22, 2026; 64 benchmarks have a result for both.

Replace Muse Spark 1.3 Replace Inkling Small
Muse Spark 1.3Meta
Coding
57.4
Overall
68.6
Output $/M
$4.25
63
T Inkling SmallThinking Machines
Coding
27.3
Overall
43.6
Output $/M
$1.20
0
vs boards won of 64 shared, 1 tied

Muse Spark 1.3 or Inkling Small: which to pick

Pick Muse Spark 1.3 for coding: it scores 57.4 on the Vibe Coding Index against 27.3 for Inkling Small.

Pick Inkling Small for output tokens 3.5x cheaper ($1.20 vs $4.25 per million).

Model AMuse Spark 1.3Meta57.4/1004 independent benchmarksNo cost per solved taskModel BInkling SmallThinking Machines27.3/1004 independent benchmarks$0.16 per solved task
Shared results
64
Muse Spark 1.3 only
28
Inkling Small only
20
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 1.3 57.4 from 4 benchmarks, Inkling Small 27.3 from 4 benchmarks.
Widest category
Agentic work, 23.3 points apart on average over 5 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Muse Spark 1.3 82.9% against Inkling Small 19.1%, 63.8 points apart on a 0 to 100 scale.
Output price
Muse Spark 1.3 $4.25 against Inkling Small $1.20 per million output tokens, 3.5x apart.
Context window
Muse Spark 1.3 takes 1.05M tokens, Inkling Small 524K.

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 1.3BarsInkling SmallTies
Coding1401 tie
Intelligence20
Agentic work50
Reasoning80
Math60
Knowledge40
General240
All shared boards6301 tie
CodingLike-for-likeSix of these boards feed the Vibe Coding Index140
Coding benchmarks for Muse Spark 1.3 and Inkling Small
BenchmarkMuse Spark 1.3Inkling SmallLeader
LiveBench coding90.2%Not measuredOnly Muse Spark 1.3 measured
LMArena WebDev16591409Muse Spark 1.3
AA Coding Index75.852.9Muse Spark 1.3
LiveCodeBench (Vals AI)Not measured85.9%Only Inkling Small measured
SWE-bench Verified (Vals AI)Not measured82.2%Only Inkling Small measured
Terminal-Bench 4 (Vals AI)10.6%0.0%Muse Spark 1.3
Vibe Code Bench (Vals AI)82.9%19.1%Muse Spark 1.3
Code migration (Vals AI)27.6%13.7%Muse Spark 1.3
ProgramBench (Vals AI)0.5%0.5%Tie
IOI (Vals AI)43.9%9.3%Muse Spark 1.3
Terminal-Bench 2.1 (Vals AI)72.3%55.1%Muse Spark 1.3
SkillsBench (Vals AI)Not measured33.6%Only Inkling Small measured
CyberBench (Vals AI)69.4%64.1%Muse Spark 1.3
SciCode59.7%49.7%Muse Spark 1.3
FrontierSWE25.8%Not measuredOnly Muse Spark 1.3 measured
ALE-Bench1688.3Not measuredOnly Muse Spark 1.3 measured
LMArena Text: coding15101450Muse Spark 1.3
LMArena Text: software and IT15111447Muse Spark 1.3
LMArena WebDev: React16721399Muse Spark 1.3
LMArena WebDev: HTML16531398Muse Spark 1.3
LMArena WebDev: from an image16401410Muse Spark 1.3
Neither model has a result on the other 18 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Muse Spark 1.3 and Inkling Small
BenchmarkMuse Spark 1.3Inkling SmallLeader
AA Intelligence Index48.125.7Muse Spark 1.3
Epoch Capabilities Index157.2150.3Muse Spark 1.3
Agentic workLike-for-likePublic boards, shown as published, kept out of the index50
Agentic work benchmarks for Muse Spark 1.3 and Inkling Small
BenchmarkMuse Spark 1.3Inkling SmallLeader
AA Agentic Index55.523.5Muse Spark 1.3
Design Arena: agents building web apps1297Not measuredOnly Muse Spark 1.3 measured
Design Arena: agents building full-stack apps1295Not measuredOnly Muse Spark 1.3 measured
Design Arena: agents building mobile apps1218Not measuredOnly Muse Spark 1.3 measured
Design Arena: agents building Godot games1241Not measuredOnly Muse Spark 1.3 measured
Design Arena: PowerPoint slides1219Not measuredOnly Muse Spark 1.3 measured
Design Arena: spreadsheets1062Not measuredOnly Muse Spark 1.3 measured
LiveBench research68.6%Not measuredOnly Muse Spark 1.3 measured
LiveBench browser80.0%Not measuredOnly Muse Spark 1.3 measured
LiveBench long agentic40.4%Not measuredOnly Muse Spark 1.3 measured
Finance Agent (Vals AI)58.9%41.3%Muse Spark 1.3
Tax Agent Bench (Vals AI)36.0%15.4%Muse Spark 1.3
Legal Research Bench (Vals AI)40.9%25.5%Muse Spark 1.3
Harvey's Legal Agent Benchmark (Vals AI)Not measured2.9%Only Inkling Small measured
Excel Modeling Benchmark (Vals AI)62.7%31.8%Muse Spark 1.3
Terminal-Bench-Science (Vals AI)4.3%Not measuredOnly Muse Spark 1.3 measured
APEX-Agents58.6%Not measuredOnly Muse Spark 1.3 measured
Neither model has a result on the other 24 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index80
Reasoning benchmarks for Muse Spark 1.3 and Inkling Small
BenchmarkMuse Spark 1.3Inkling SmallLeader
GPQA DiamondNot measured83.6%Only Inkling Small measured
LiveBench reasoning89.7%Not measuredOnly Muse Spark 1.3 measured
GPQA Diamond (Artificial Analysis run)94.1%89.5%Muse Spark 1.3
Humanity's Last Exam (Artificial Analysis run)48.7%33.3%Muse Spark 1.3
GPQA Diamond (Epoch AI run)Not measured88.5%Only Inkling Small measured
ARC-AGINot measured84.0%Only Inkling Small measured
ARC-AGI-2Not measured40.1%Only Inkling Small measured
Chess puzzles37.0%Not measuredOnly Muse Spark 1.3 measured
Mystery game puzzles25.0%6.0%Muse Spark 1.3
LMArena Text: hard prompts15031423Muse Spark 1.3
LMArena Text: expert15191441Muse Spark 1.3
LMArena Text: hard prompts in English15001429Muse Spark 1.3
LMArena Vision: diagrams13301251Muse Spark 1.3
LMArena Vision: homework12961257Muse Spark 1.3
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index60
Math benchmarks for Muse Spark 1.3 and Inkling Small
BenchmarkMuse Spark 1.3Inkling SmallLeader
OTIS Mock AIME99.2%90.0%Muse Spark 1.3
FrontierMath, tiers 1 to 374.4%46.3%Muse Spark 1.3
FrontierMath, tier 446.3%17.1%Muse Spark 1.3
ProofBench58.0%6.0%Muse Spark 1.3
LMArena Text: math14971459Muse Spark 1.3
LMArena Text: mathematical work14911441Muse 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 index40
Knowledge benchmarks for Muse Spark 1.3 and Inkling Small
BenchmarkMuse Spark 1.3Inkling SmallLeader
MMLU ProNot measured85.6%Only Inkling Small measured
LegalBench (Vals AI)Not measured83.0%Only Inkling Small measured
CorpFin (Vals AI)Not measured69.6%Only Inkling Small measured
TaxEval (Vals AI)Not measured75.5%Only Inkling Small measured
MortgageTax (Vals AI)Not measured62.3%Only Inkling Small measured
MedCode (Vals AI)Not measured37.9%Only Inkling Small measured
SimpleQA VerifiedNot measured19.1%Only Inkling Small measured
LMArena Text: science15071428Muse Spark 1.3
LMArena Text: medicine and healthcare14931413Muse Spark 1.3
LMArena Text: legal and government14991415Muse Spark 1.3
LMArena Text: business and finance14901413Muse Spark 1.3
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 1.3 and Inkling Small
BenchmarkMuse Spark 1.3Inkling SmallLeader
Design Arena: websites1356Not measuredOnly Muse Spark 1.3 measured
Design Arena: UI components1349Not measuredOnly Muse Spark 1.3 measured
Design Arena: game dev1328Not measuredOnly Muse Spark 1.3 measured
Design Arena: data viz1343Not measuredOnly Muse Spark 1.3 measured
Design Arena: 3D1358Not measuredOnly Muse Spark 1.3 measured
Design Arena: all code categories1352Not measuredOnly Muse Spark 1.3 measured
Design Arena: SVG1301Not measuredOnly Muse Spark 1.3 measured
Design Arena: ASCII art1278Not measuredOnly Muse Spark 1.3 measured
LiveBench design74.8%Not measuredOnly Muse Spark 1.3 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index240
General benchmarks for Muse Spark 1.3 and Inkling Small
BenchmarkMuse Spark 1.3Inkling SmallLeader
Vals IndexNot measured27.6%Only Inkling Small measured
LiveBench data analysis79.6%Not measuredOnly Muse Spark 1.3 measured
Public Benefits Bench (Vals AI)Not measured59.4%Only Inkling Small measured
SAGE (Vals AI)Not measured32.7%Only Inkling Small measured
MedScribe (Vals AI)Not measured84.1%Only Inkling Small measured
Vals Multimodal IndexNot measured50.0%Only Inkling Small measured
Long context reasoning (AA-LCR)83.0%75.7%Muse Spark 1.3
DTBench96.5%Not measuredOnly Muse Spark 1.3 measured
LMCA53.9%Not measuredOnly Muse Spark 1.3 measured
LMArena Text14901413Muse Spark 1.3
LMArena Text: instruction following14791399Muse Spark 1.3
LMArena Text: creative writing14621334Muse Spark 1.3
LMArena Vision13081237Muse Spark 1.3
LMArena Text: English14951421Muse Spark 1.3
LMArena Text: non-English14811401Muse Spark 1.3
LMArena Text: Chinese15321464Muse Spark 1.3
LMArena Text: German15131408Muse Spark 1.3
LMArena Text: Japanese14701401Muse Spark 1.3
LMArena Text: Korean14901367Muse Spark 1.3
LMArena Text: French15111435Muse Spark 1.3
LMArena Text: Spanish14961422Muse Spark 1.3
LMArena Text: Russian14911394Muse Spark 1.3
LMArena Text: Polish14901428Muse Spark 1.3
LMArena Text: multi-turn14871416Muse Spark 1.3
LMArena Text: longer queries14881402Muse Spark 1.3
LMArena Text: writing and language14701357Muse Spark 1.3
LMArena Text: entertainment and media14571352Muse Spark 1.3
LMArena Vision: English12981243Muse Spark 1.3
LMArena Vision: Chinese13841292Muse Spark 1.3
LMArena Vision: reading text13191243Muse Spark 1.3
LMArena Vision: humor12931207Muse Spark 1.3
LMArena Vision: creative writing12961205Muse Spark 1.3
Neither model has a result on the other 14 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Muse Spark 1.3 and Inkling Small
BenchmarkMuse Spark 1.3Inkling SmallLeader
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 1.3$0.0034Fits in one request
Inkling Small$0.0010Fits in one request

Inkling Small costs less

Repository review

50K input + 3K output tokens

Muse Spark 1.3$0.075Fits in one request
Inkling Small$0.026Fits in one request

Inkling Small costs less

Agent loop

200K input + 10K output tokens

Muse Spark 1.3$0.292Fits in one request
Inkling Small$0.102Fits in one request

Inkling Small 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 1.3 and Inkling Small
SpecificationMeta Muse Spark 1.3Thinking Machines Inkling Small
MakerMetaThinking Machines
WeightsNo public weights listedOpen weights
ReleasedSeptember 2, 2026July 30, 2026
Context window1.05M524K
Input $/Mtok$1.25$0.45
Output $/Mtok$4.25$1.20
Coding index57.427.3
Independent measurements behind it44
Cost per solved taskNot computable$0.16
SourceOpenRouter listingOpenRouter listing

Questions

Is Muse Spark 1.3 better than Inkling Small for coding?

Pick Muse Spark 1.3 for coding: it scores 57.4 on the Vibe Coding Index against 27.3 for Inkling Small. Pick Inkling Small for output tokens 3.5x cheaper ($1.20 vs $4.25 per million).

Which is cheaper, Muse Spark 1.3 or Inkling Small?

Muse Spark 1.3 costs $1.25 per million input tokens and $4.25 per million output tokens; Inkling Small costs $0.45 and $1.20. Cost per solved task is known for Inkling Small only.

Which has the bigger context window, Muse Spark 1.3 or Inkling Small?

Muse Spark 1.3, with 1.05M tokens against 524K.

How many benchmarks is the Muse Spark 1.3 vs Inkling Small comparison based on?

64 benchmarks have a result for both models as of October 22, 2026. Muse Spark 1.3's coding index rests on 4 independent benchmarks and Inkling Small's on 4. Where only one model has a result, the page says so instead of naming a winner.

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<p style="font:13px/1.4 sans-serif;margin:6px 0 0">Source: <a href="https://llmbenchmark.ai/compare/meta-muse-spark-1-3-vs-thinkingmachines-inkling-small">LLMBenchmark.ai, Muse Spark 1.3 vs Inkling Small</a></p>