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Muse Spark 1.2 vs Inkling

Muse Spark 1.2 leads Inkling on coding, 55.7 to 31.5 on the Vibe Coding Index, at about the same output price ($4.25 vs $4.05 per million). Updated October 22, 2026; 86 benchmarks have a result for both.

Replace Muse Spark 1.2 Replace Inkling
Muse Spark 1.2Meta
Coding
55.7
Overall
60.4
Output $/M
$4.25
85
T InklingThinking Machines
Coding
31.5
Overall
46.5
Output $/M
$4.05
0
vs boards won of 86 shared, 1 tied

Muse Spark 1.2 or Inkling: which to pick

Pick Muse Spark 1.2 for coding: it scores 55.7 on the Vibe Coding Index against 31.5 for Inkling, though on 5 benchmarks against 6.

Pick Inkling for output tokens 1.0x cheaper ($4.05 vs $4.25 per million).

Model AMuse Spark 1.2Meta55.7/1005 independent benchmarks$0.64 per solved taskModel BInklingThinking Machines31.5/1006 independent benchmarks$0.76 per solved task
Shared results
86
Muse Spark 1.2 only
11
Inkling only
16
Like-for-like categories
8 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 1.2 55.7 from 5 benchmarks, Inkling 31.5 from 6 benchmarks.
Widest category
Web design, 16.5 points apart on average over 9 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Muse Spark 1.2 79.1% against Inkling 19.2%, 59.9 points apart on a 0 to 100 scale.
Output price
Muse Spark 1.2 $4.25 against Inkling $4.05 per million output tokens, 1.0x apart.
Context window
Muse Spark 1.2 takes 1.05M tokens, Inkling 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 1.2BarsInklingTies
Coding190
Intelligence20
Agentic work1001 tie
Reasoning90
Math30
Knowledge110
Web design90
General220
All shared boards8501 tie
CodingLike-for-likeSix of these boards feed the Vibe Coding Index190
Coding benchmarks for Muse Spark 1.2 and Inkling
BenchmarkMuse Spark 1.2InklingLeader
LiveBench coding78.2%64.0%Muse Spark 1.2
LMArena WebDev15341414Muse Spark 1.2
AA Coding Index72.252.1Muse Spark 1.2
LiveCodeBench (Vals AI)Not measured85.5%Only Inkling measured
SWE-bench Verified (Vals AI)86.6%77.6%Muse Spark 1.2
Terminal-Bench 4 (Vals AI)6.1%0.5%Muse Spark 1.2
Vibe Code Bench (Vals AI)79.1%19.2%Muse Spark 1.2
Code migration (Vals AI)29.9%11.8%Muse Spark 1.2
ProgramBench (Vals AI)0.5%0.0%Muse Spark 1.2
IOI (Vals AI)21.8%14.9%Muse Spark 1.2
Terminal-Bench 2.1 (Vals AI)69.7%47.6%Muse Spark 1.2
Vibe Code Bench 1-100 (Vals AI)Not measured7.3%Only Inkling measured
SkillsBench (Vals AI)53.0%26.1%Muse Spark 1.2
CyberBench (Vals AI)69.5%66.8%Muse Spark 1.2
SciCode57.4%47.0%Muse Spark 1.2
FrontierCodeNot measured14.0%Only Inkling measured
FrontierSWE12.0%4.1%Muse Spark 1.2
WeirdML60.3%32.3%Muse Spark 1.2
ALE-BenchNot measured946.0Only Inkling measured
LMArena Text: coding15051466Muse Spark 1.2
LMArena Text: software and IT15051465Muse Spark 1.2
LMArena WebDev: React15261404Muse Spark 1.2
LMArena WebDev: HTML15431399Muse Spark 1.2
Neither model has a result on the other 16 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index20
Intelligence benchmarks for Muse Spark 1.2 and Inkling
BenchmarkMuse Spark 1.2InklingLeader
AA Intelligence Index39.625.0Muse Spark 1.2
Epoch Capabilities Index155.1148.4Muse Spark 1.2
Agentic workLike-for-likePublic boards, shown as published, kept out of the index100
Agentic work benchmarks for Muse Spark 1.2 and Inkling
BenchmarkMuse Spark 1.2InklingLeader
AA Agentic Index43.222.5Muse Spark 1.2
Design Arena: agents building web apps12211196Muse Spark 1.2
Design Arena: agents building full-stack apps1210Not measuredOnly Muse Spark 1.2 measured
Design Arena: agents building mobile apps1181Not measuredOnly Muse Spark 1.2 measured
Design Arena: agents building Android apps1222Not measuredOnly Muse Spark 1.2 measured
Design Arena: agents building games1179Not measuredOnly Muse Spark 1.2 measured
Design Arena: HTML slides1085Not measuredOnly Muse Spark 1.2 measured
Design Arena: PowerPoint slides1172Not measuredOnly Muse Spark 1.2 measured
LiveBench research67.7%59.9%Muse Spark 1.2
LiveBench browser36.0%16.0%Muse Spark 1.2
LiveBench long agentic21.3%14.1%Muse Spark 1.2
SREBench (Vals AI)0.0%0.0%Tie
Finance Agent (Vals AI)60.6%46.6%Muse Spark 1.2
Tax Agent Bench (Vals AI)32.8%15.3%Muse Spark 1.2
Legal Research Bench (Vals AI)43.8%28.4%Muse Spark 1.2
Harvey's Legal Agent Benchmark (Vals AI)Not measured3.8%Only Inkling measured
Excel Modeling Benchmark (Vals AI)57.0%38.4%Muse Spark 1.2
BioMysteryBench (Vals AI)64.8%Not measuredOnly Muse Spark 1.2 measured
APEX-Agents45.4%33.8%Muse Spark 1.2
Neither model has a result on the other 22 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index90
Reasoning benchmarks for Muse Spark 1.2 and Inkling
BenchmarkMuse Spark 1.2InklingLeader
GPQA DiamondNot measured87.1%Only Inkling measured
LiveBench reasoning90.0%78.3%Muse Spark 1.2
MMMU Pro (Vals AI)86.1%78.5%Muse Spark 1.2
GPQA Diamond (Artificial Analysis run)90.4%87.2%Muse Spark 1.2
Humanity's Last Exam (Artificial Analysis run)45.5%31.9%Muse Spark 1.2
GPQA Diamond (Epoch AI run)Not measured88.3%Only Inkling measured
ARC-AGINot measured79.5%Only Inkling measured
ARC-AGI-2Not measured36.5%Only Inkling measured
SimpleBench74.5%50.0%Muse Spark 1.2
Chess puzzles27.0%21.0%Muse Spark 1.2
LMArena Text: hard prompts14891451Muse Spark 1.2
LMArena Text: expert14751466Muse Spark 1.2
LMArena Text: hard prompts in English14871448Muse Spark 1.2
LMArena Vision: diagrams1317Not measuredOnly Muse Spark 1.2 measured
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index30
Math benchmarks for Muse Spark 1.2 and Inkling
BenchmarkMuse Spark 1.2InklingLeader
OTIS Mock AIMENot measured88.9%Only Inkling measured
FrontierMath, tiers 1 to 3Not measured33.3%Only Inkling measured
FrontierMath, tier 4Not measured4.9%Only Inkling measured
ProofBench43.0%0.0%Muse Spark 1.2
LMArena Text: math14841479Muse Spark 1.2
LMArena Text: mathematical work14801460Muse Spark 1.2
Neither model has a result on the other 7 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index110
Knowledge benchmarks for Muse Spark 1.2 and Inkling
BenchmarkMuse Spark 1.2InklingLeader
MMLU Pro88.3%86.3%Muse Spark 1.2
LegalBench (Vals AI)85.3%83.0%Muse Spark 1.2
CorpFin (Vals AI)70.9%68.6%Muse Spark 1.2
TaxEval (Vals AI)80.4%75.3%Muse Spark 1.2
MortgageTax (Vals AI)65.4%64.0%Muse Spark 1.2
MedCode (Vals AI)49.4%41.2%Muse Spark 1.2
SimpleQA Verified60.3%40.3%Muse Spark 1.2
LMArena Text: science15001455Muse Spark 1.2
LMArena Text: medicine and healthcare14961447Muse Spark 1.2
LMArena Text: legal and government15171448Muse Spark 1.2
LMArena Text: business and finance14841438Muse Spark 1.2
Neither model has a result on the other 7 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index90
Web design benchmarks for Muse Spark 1.2 and Inkling
BenchmarkMuse Spark 1.2InklingLeader
Design Arena: websites13121224Muse Spark 1.2
Design Arena: UI components12981198Muse Spark 1.2
Design Arena: game dev13011165Muse Spark 1.2
Design Arena: data viz13341156Muse Spark 1.2
Design Arena: 3D13011160Muse Spark 1.2
Design Arena: all code categories13121205Muse Spark 1.2
Design Arena: SVG12841108Muse Spark 1.2
Design Arena: ASCII art12841089Muse Spark 1.2
LiveBench design67.1%58.3%Muse Spark 1.2
GeneralLike-for-likePublic boards, shown as published, kept out of the index220
General benchmarks for Muse Spark 1.2 and Inkling
BenchmarkMuse Spark 1.2InklingLeader
Vals IndexNot measured29.0%Only Inkling measured
LiveBench data analysis76.5%72.8%Muse Spark 1.2
Public Benefits Bench (Vals AI)68.5%58.5%Muse Spark 1.2
SAGE (Vals AI)47.7%36.5%Muse Spark 1.2
MedScribe (Vals AI)90.1%85.4%Muse Spark 1.2
Vals Multimodal Index69.8%49.4%Muse Spark 1.2
Long context reasoning (AA-LCR)79.0%77.3%Muse Spark 1.2
DTBench94.7%87.5%Muse Spark 1.2
LMCA48.4%37.6%Muse Spark 1.2
LMArena Text14821442Muse Spark 1.2
LMArena Text: instruction following14621425Muse Spark 1.2
LMArena Text: creative writing14361390Muse Spark 1.2
LMArena Vision1304Not measuredOnly Muse Spark 1.2 measured
LMArena Text: English14831442Muse Spark 1.2
LMArena Text: non-English14761434Muse Spark 1.2
LMArena Text: Chinese15091493Muse Spark 1.2
LMArena Text: GermanNot measured1445Only Inkling measured
LMArena Text: JapaneseNot measured1429Only Inkling measured
LMArena Text: Korean14621403Muse Spark 1.2
LMArena Text: French14951455Muse Spark 1.2
LMArena Text: Spanish14841449Muse Spark 1.2
LMArena Text: Russian14831430Muse Spark 1.2
LMArena Text: PolishNot measured1450Only Inkling measured
LMArena Text: multi-turn15021437Muse Spark 1.2
LMArena Text: longer queries14731435Muse Spark 1.2
LMArena Text: writing and language14531404Muse Spark 1.2
LMArena Text: entertainment and media14431394Muse Spark 1.2
LMArena Vision: English1291Not measuredOnly Muse Spark 1.2 measured
LMArena Vision: reading text1313Not measuredOnly Muse Spark 1.2 measured
Neither model has a result on the other 17 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Muse Spark 1.2 and Inkling
BenchmarkMuse Spark 1.2InklingLeader
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 1.2$0.0034Fits in one request
Inkling$0.0030Fits in one request

Inkling costs less

Repository review

50K input + 3K output tokens

Muse Spark 1.2$0.075Fits in one request
Inkling$0.061Fits in one request

Inkling costs less

Agent loop

200K input + 10K output tokens

Muse Spark 1.2$0.292Fits in one request
Inkling$0.235Fits in one request

Inkling 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 1.2 and Inkling
SpecificationMeta Muse Spark 1.2Thinking Machines Inkling
MakerMetaThinking Machines
WeightsNo public weights listedOpen weights
ReleasedAugust 5, 2026July 17, 2026
Context window1.05M524K
Input $/Mtok$1.25$0.975
Output $/Mtok$4.25$4.05
Coding index55.731.5
Independent measurements behind it56
Cost per solved task$0.64$0.76
SourceOpenRouter listingOpenRouter listing

Questions

Is Muse Spark 1.2 better than Inkling for coding?

Pick Muse Spark 1.2 for coding: it scores 55.7 on the Vibe Coding Index against 31.5 for Inkling, though on 5 benchmarks against 6. Pick Inkling for output tokens 1.0x cheaper ($4.05 vs $4.25 per million).

Which is cheaper, Muse Spark 1.2 or Inkling?

Muse Spark 1.2 costs $1.25 per million input tokens and $4.25 per million output tokens; Inkling costs $0.975 and $4.05. Per solved SWE-bench Verified task, Muse Spark 1.2 costs $0.64 and Inkling $0.76.

Which has the bigger context window, Muse Spark 1.2 or Inkling?

Muse Spark 1.2, with 1.05M tokens against 524K.

How many benchmarks is the Muse Spark 1.2 vs Inkling comparison based on?

86 benchmarks have a result for both models as of October 22, 2026. Muse Spark 1.2's coding index rests on 5 independent benchmarks and Inkling's on 6. 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/meta-muse-spark-1-2-vs-thinkingmachines-inkling" title="Muse Spark 1.2 vs Inkling, 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/meta-muse-spark-1-2-vs-thinkingmachines-inkling">LLMBenchmark.ai, Muse Spark 1.2 vs Inkling</a></p>