Enter opens the highlighted result. Esc closes.

Kimi K2.6 vs Muse Spark 1.3

Muse Spark 1.3 leads Kimi K2.6 on coding, 57.4 to 52.1 on the Vibe Coding Index, at about the same output price ($4.25 vs $4.00 per million). Updated October 22, 2026; 79 benchmarks have a result for both.

Replace Kimi K2.6 Replace Muse Spark 1.3
Kimi K2.6Moonshot AI
Coding
52.1
Overall
60.5
Output $/M
$4.00
3
Muse Spark 1.3Meta
Coding
57.4
Overall
68.6
Output $/M
$4.25
76
vs boards won of 79 shared

Kimi K2.6 or Muse Spark 1.3: which to pick

Pick Muse Spark 1.3 for coding: it scores 57.4 on the Vibe Coding Index against 52.1 for Kimi K2.6.

Pick Kimi K2.6 for output tokens 1.1x cheaper ($4.00 vs $4.25 per million) and work measured by Code migration (Vals AI) or Design Arena: spreadsheets, where it leads.

Model AKimi K2.6Moonshot AI52.1/1003 independent benchmarks$0.35 per solved taskModel BMuse Spark 1.3Meta57.4/1004 independent benchmarksNo cost per solved task
Shared results
79
Kimi K2.6 only
30
Muse Spark 1.3 only
13
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
Kimi K2.6 52.1 from 3 benchmarks, Muse Spark 1.3 57.4 from 4 benchmarks.
Widest category
Agentic work, 17.1 points apart on average over 11 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Kimi K2.6 37.9% against Muse Spark 1.3 82.9%, 45.0 points apart on a 0 to 100 scale.
Output price
Kimi K2.6 $4.00 against Muse Spark 1.3 $4.25 per million output tokens, 1.1x apart.
Context window
Kimi K2.6 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
CategoryKimi K2.6BarsMuse Spark 1.3Ties
Coding112
Intelligence02
Agentic work110
Reasoning18
Math06
Knowledge04
Web design08
General026
All shared boards376
CodingLike-for-likeSix of these boards feed the Vibe Coding Index112
Coding benchmarks for Kimi K2.6 and Muse Spark 1.3
BenchmarkKimi K2.6Muse Spark 1.3Leader
LiveBench codingNot measured90.2%Only Muse Spark 1.3 measured
LMArena WebDev15091659Muse Spark 1.3
AA Coding Index61.875.8Muse Spark 1.3
LiveCodeBench (Vals AI)86.8%Not measuredOnly Kimi K2.6 measured
SWE-bench Verified (Vals AI)76.2%Not measuredOnly Kimi K2.6 measured
Terminal-Bench 4 (Vals AI)Not measured10.6%Only Muse Spark 1.3 measured
Vibe Code Bench (Vals AI)37.9%82.9%Muse Spark 1.3
Code migration (Vals AI)27.8%27.6%Kimi K2.6
ProgramBench (Vals AI)0.0%0.5%Muse Spark 1.3
IOI (Vals AI)Not measured43.9%Only Muse Spark 1.3 measured
Terminal-Bench 2.1 (Vals AI)53.6%72.3%Muse Spark 1.3
CyberBench (Vals AI)Not measured69.4%Only Muse Spark 1.3 measured
SciCode51.5%59.7%Muse Spark 1.3
Terminal-Bench Hard (Artificial Analysis run)43.9%Not measuredOnly Kimi K2.6 measured
FrontierSWENot measured25.8%Only Muse Spark 1.3 measured
WeirdML55.9%Not measuredOnly Kimi K2.6 measured
ALE-Bench1092.71688.3Muse Spark 1.3
LMArena Text: coding14891510Muse Spark 1.3
LMArena Text: software and IT14841511Muse Spark 1.3
LMArena WebDev: React15051672Muse Spark 1.3
LMArena WebDev: HTML14851653Muse Spark 1.3
LMArena WebDev: from an image15211640Muse Spark 1.3
Neither model has a result on the other 17 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index02
Intelligence benchmarks for Kimi K2.6 and Muse Spark 1.3
BenchmarkKimi K2.6Muse Spark 1.3Leader
AA Intelligence Index27.048.1Muse Spark 1.3
Epoch Capabilities Index150.9157.2Muse Spark 1.3
Agentic workLike-for-likePublic boards, shown as published, kept out of the index110
Agentic work benchmarks for Kimi K2.6 and Muse Spark 1.3
BenchmarkKimi K2.6Muse Spark 1.3Leader
AA Agentic Index20.555.5Muse Spark 1.3
Design Arena: agents building web apps12681297Muse Spark 1.3
Design Arena: agents building full-stack apps11551295Muse Spark 1.3
Design Arena: agents building mobile apps11561218Muse Spark 1.3
Design Arena: agents building Android apps1161Not measuredOnly Kimi K2.6 measured
Design Arena: agents building Godot games11201241Muse Spark 1.3
Design Arena: agents building games1141Not measuredOnly Kimi K2.6 measured
Design Arena: HTML slides1135Not measuredOnly Kimi K2.6 measured
Design Arena: PowerPoint slides11031219Muse Spark 1.3
Design Arena: spreadsheets12761062Kimi K2.6
LiveBench researchNot measured68.6%Only Muse Spark 1.3 measured
LiveBench browserNot measured80.0%Only Muse Spark 1.3 measured
LiveBench long agenticNot measured40.4%Only Muse Spark 1.3 measured
Finance Agent (Vals AI)44.9%58.9%Muse Spark 1.3
Tax Agent Bench (Vals AI)12.4%36.0%Muse Spark 1.3
Legal Research Bench (Vals AI)15.9%40.9%Muse Spark 1.3
Excel Modeling Benchmark (Vals AI)57.9%62.7%Muse Spark 1.3
Terminal-Bench-Science (Vals AI)Not measured4.3%Only Muse Spark 1.3 measured
τ²-Bench Telecom95.9%Not measuredOnly Kimi K2.6 measured
APEX-AgentsNot measured58.6%Only Muse Spark 1.3 measured
OSWorld 2.04.6%Not measuredOnly Kimi K2.6 measured
Vending-Bench 2$6,205Not measuredOnly Kimi K2.6 measured
Neither model has a result on the other 19 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index18
Reasoning benchmarks for Kimi K2.6 and Muse Spark 1.3
BenchmarkKimi K2.6Muse Spark 1.3Leader
GPQA Diamond89.1%Not measuredOnly Kimi K2.6 measured
LiveBench reasoningNot measured89.7%Only Muse Spark 1.3 measured
MMMU Pro (Vals AI)86.3%Not measuredOnly Kimi K2.6 measured
GPQA Diamond (Artificial Analysis run)91.1%94.1%Muse Spark 1.3
Humanity's Last Exam (Artificial Analysis run)37.5%48.7%Muse Spark 1.3
GPQA Diamond (Epoch AI run)90.8%Not measuredOnly Kimi K2.6 measured
Chess puzzles20.0%37.0%Muse Spark 1.3
Mystery game puzzles18.0%25.0%Muse Spark 1.3
EBR-bench2.4%Not measuredOnly Kimi K2.6 measured
LMArena Text: hard prompts14701503Muse Spark 1.3
LMArena Text: expert14911519Muse Spark 1.3
LMArena Text: hard prompts in English14711500Muse Spark 1.3
LMArena Vision: diagrams12981330Muse Spark 1.3
LMArena Vision: homework13101296Kimi K2.6
Neither model has a result on the other 8 boards here
MathLike-for-likePublic boards, shown as published, kept out of the index06
Math benchmarks for Kimi K2.6 and Muse Spark 1.3
BenchmarkKimi K2.6Muse Spark 1.3Leader
OTIS Mock AIME96.1%99.2%Muse Spark 1.3
FrontierMath, tiers 1 to 357.2%74.4%Muse Spark 1.3
FrontierMath, tier 425.6%46.3%Muse Spark 1.3
ProofBench16.0%58.0%Muse Spark 1.3
LMArena Text: math14741497Muse Spark 1.3
LMArena Text: mathematical work14801491Muse 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 Kimi K2.6 and Muse Spark 1.3
BenchmarkKimi K2.6Muse Spark 1.3Leader
MMLU Pro87.6%Not measuredOnly Kimi K2.6 measured
LegalBench (Vals AI)84.7%Not measuredOnly Kimi K2.6 measured
CaseLaw (Vals AI)61.2%Not measuredOnly Kimi K2.6 measured
CorpFin (Vals AI)66.7%Not measuredOnly Kimi K2.6 measured
TaxEval (Vals AI)74.7%Not measuredOnly Kimi K2.6 measured
MortgageTax (Vals AI)65.8%Not measuredOnly Kimi K2.6 measured
MedCode (Vals AI)40.1%Not measuredOnly Kimi K2.6 measured
SimpleQA Verified34.9%Not measuredOnly Kimi K2.6 measured
LMArena Text: science14681507Muse Spark 1.3
LMArena Text: medicine and healthcare14571493Muse Spark 1.3
LMArena Text: legal and government14621499Muse Spark 1.3
LMArena Text: business and finance14451490Muse Spark 1.3
Neither model has a result on the other 6 boards here
Web designLike-for-likePublic boards, shown as published, kept out of the index08
Web design benchmarks for Kimi K2.6 and Muse Spark 1.3
BenchmarkKimi K2.6Muse Spark 1.3Leader
Design Arena: websites12681356Muse Spark 1.3
Design Arena: UI components12631349Muse Spark 1.3
Design Arena: game dev12501328Muse Spark 1.3
Design Arena: data viz12491343Muse Spark 1.3
Design Arena: 3D12671358Muse Spark 1.3
Design Arena: all code categories12711352Muse Spark 1.3
Design Arena: SVG11811301Muse Spark 1.3
Design Arena: ASCII art11651278Muse Spark 1.3
LiveBench designNot measured74.8%Only Muse Spark 1.3 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index026
General benchmarks for Kimi K2.6 and Muse Spark 1.3
BenchmarkKimi K2.6Muse Spark 1.3Leader
LiveBench data analysisNot measured79.6%Only Muse Spark 1.3 measured
Public Benefits Bench (Vals AI)56.6%Not measuredOnly Kimi K2.6 measured
SAGE (Vals AI)50.2%Not measuredOnly Kimi K2.6 measured
MedScribe (Vals AI)78.2%Not measuredOnly Kimi K2.6 measured
Vals Multimodal Index56.4%Not measuredOnly Kimi K2.6 measured
IFBench76.0%Not measuredOnly Kimi K2.6 measured
Long context reasoning (AA-LCR)81.0%83.0%Muse Spark 1.3
DTBench90.9%96.5%Muse Spark 1.3
LMCA37.3%53.9%Muse Spark 1.3
Furniture assembly21.7%Not measuredOnly Kimi K2.6 measured
ExploitBench18.4%Not measuredOnly Kimi K2.6 measured
LMArena Text14551490Muse Spark 1.3
LMArena Text: instruction following14511479Muse Spark 1.3
LMArena Text: creative writing14341462Muse Spark 1.3
LMArena Vision12821308Muse Spark 1.3
LMArena Text: English14601495Muse Spark 1.3
LMArena Text: non-English14461481Muse Spark 1.3
LMArena Text: Chinese15201532Muse Spark 1.3
LMArena Text: German14511513Muse Spark 1.3
LMArena Text: Japanese14431470Muse Spark 1.3
LMArena Text: Korean14271490Muse Spark 1.3
LMArena Text: French14711511Muse Spark 1.3
LMArena Text: Spanish14641496Muse Spark 1.3
LMArena Text: Russian14461491Muse Spark 1.3
LMArena Text: Polish14381490Muse Spark 1.3
LMArena Text: multi-turn14531487Muse Spark 1.3
LMArena Text: longer queries14681488Muse Spark 1.3
LMArena Text: writing and language14391470Muse Spark 1.3
LMArena Text: entertainment and media14281457Muse Spark 1.3
LMArena Vision: English12871298Muse Spark 1.3
LMArena Vision: Chinese13461384Muse Spark 1.3
LMArena Vision: reading text12911319Muse Spark 1.3
LMArena Vision: humor12801293Muse Spark 1.3
LMArena Vision: creative writing12731296Muse Spark 1.3
LMArena Document1451Not measuredOnly Kimi K2.6 measured
Neither model has a result on the other 11 boards here
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
Image generation benchmarks for Kimi K2.6 and Muse Spark 1.3
BenchmarkKimi K2.6Muse 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

Kimi K2.6$0.0029Fits in one request
Muse Spark 1.3$0.0034Fits in one request

Kimi K2.6 costs less

Repository review

50K input + 3K output tokens

Kimi K2.6$0.059Fits in one request
Muse Spark 1.3$0.075Fits in one request

Kimi K2.6 costs less

Agent loop

200K input + 10K output tokens

Kimi K2.6$0.230Fits in one request
Muse Spark 1.3$0.292Fits in one request

Kimi K2.6 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 Kimi K2.6 and Muse Spark 1.3
SpecificationMoonshotAI Kimi K2.6Meta Muse Spark 1.3
MakerMoonshot AIMeta
WeightsOpen weightsNo public weights listed
ReleasedApril 20, 2026September 2, 2026
Context window262K1.05M
Input $/Mtok$0.95$1.25
Output $/Mtok$4.00$4.25
Coding index52.157.4
Independent measurements behind it34
Cost per solved task$0.35Not computable
SourceOpenRouter listingOpenRouter listing

Questions

Is Kimi K2.6 better than Muse Spark 1.3 for coding?

Pick Muse Spark 1.3 for coding: it scores 57.4 on the Vibe Coding Index against 52.1 for Kimi K2.6. Pick Kimi K2.6 for output tokens 1.1x cheaper ($4.00 vs $4.25 per million) and work measured by Code migration (Vals AI) or Design Arena: spreadsheets, where it leads.

Which is cheaper, Kimi K2.6 or Muse Spark 1.3?

Kimi K2.6 costs $0.95 per million input tokens and $4.00 per million output tokens; Muse Spark 1.3 costs $1.25 and $4.25. Cost per solved task is known for Kimi K2.6 only.

Which has the bigger context window, Kimi K2.6 or Muse Spark 1.3?

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

How many benchmarks is the Kimi K2.6 vs Muse Spark 1.3 comparison based on?

79 benchmarks have a result for both models as of October 22, 2026. Kimi K2.6's coding index rests on 3 independent benchmarks and Muse Spark 1.3's on 4. Where only one model has a result, the page says so instead of naming a winner.

Compare next

Embed this comparison on your site

Free under CC BY 4.0, while the source link stays visible. Preview the frame · Terms and other embeds

<iframe src="https://llmbenchmark.ai/embed/compare/kimi-k2-6-vs-meta-muse-spark-1-3" title="Kimi K2.6 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/kimi-k2-6-vs-meta-muse-spark-1-3">LLMBenchmark.ai, Kimi K2.6 vs Muse Spark 1.3</a></p>