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Muse Spark 1.2 vs MiMo-V2.5

Muse Spark 1.2 leads MiMo-V2.5 on coding, 55.7 to 50.0 on the Vibe Coding Index, and MiMo-V2.5 costs 12.6x less per output token ($0.336 vs $4.25 per million). Updated October 22, 2026; 66 benchmarks have a result for both.

Replace Muse Spark 1.2 Replace MiMo-V2.5
Muse Spark 1.2Meta
Coding
55.7
Overall
60.4
Output $/M
$4.25
66
MiMo-V2.5Xiaomi
Coding
50.0
Overall
50.7
Output $/M
$0.336
0
vs boards won of 66 shared

Muse Spark 1.2 or MiMo-V2.5: which to pick

Pick Muse Spark 1.2 for coding: it scores 55.7 on the Vibe Coding Index against 50.0 for MiMo-V2.5.

Pick MiMo-V2.5 for output tokens 12.6x cheaper ($0.336 vs $4.25 per million) and a lower cost per solved task ($0.01 against $0.64).

Model AMuse Spark 1.2Meta55.7/1005 independent benchmarks$0.64 per solved taskModel BMiMo-V2.5Xiaomi50.0/1003 independent benchmarks$0.01 per solved task
Shared results
66
Muse Spark 1.2 only
31
MiMo-V2.5 only
14
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, MiMo-V2.5 50.0 from 3 benchmarks.
Widest category
Agentic work, 22.6 points apart on average over 5 shared benchmarks.
Widest single gap
Vibe Code Bench (Vals AI): Muse Spark 1.2 79.1% against MiMo-V2.5 42.2%, 36.9 points apart on a 0 to 100 scale.
Output price
Muse Spark 1.2 $4.25 against MiMo-V2.5 $0.336 per million output tokens, 12.6x apart.
Context window
Muse Spark 1.2 takes 1.05M tokens, MiMo-V2.5 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
CategoryMuse Spark 1.2BarsMiMo-V2.5Ties
Coding110
Intelligence10
Agentic work50
Reasoning70
Math30
Knowledge100
Web design80
General210
All shared boards660
CodingLike-for-likeSix of these boards feed the Vibe Coding Index110
Coding benchmarks for Muse Spark 1.2 and MiMo-V2.5
BenchmarkMuse Spark 1.2MiMo-V2.5Leader
LiveBench coding78.2%Not measuredOnly Muse Spark 1.2 measured
LMArena WebDev15341438Muse Spark 1.2
AA Coding Index72.256.8Muse Spark 1.2
LiveCodeBench (Vals AI)Not measured81.5%Only MiMo-V2.5 measured
SWE-bench Verified (Vals AI)86.6%71.0%Muse Spark 1.2
Terminal-Bench 4 (Vals AI)6.1%Not measuredOnly Muse Spark 1.2 measured
Vibe Code Bench (Vals AI)79.1%42.2%Muse Spark 1.2
Code migration (Vals AI)29.9%14.2%Muse Spark 1.2
ProgramBench (Vals AI)0.5%Not measuredOnly Muse Spark 1.2 measured
IOI (Vals AI)21.8%Not measuredOnly Muse Spark 1.2 measured
Terminal-Bench 2.1 (Vals AI)69.7%60.7%Muse Spark 1.2
SkillsBench (Vals AI)53.0%Not measuredOnly Muse Spark 1.2 measured
CyberBench (Vals AI)69.5%Not measuredOnly Muse Spark 1.2 measured
SciCode57.4%43.9%Muse Spark 1.2
Terminal-Bench Hard (Artificial Analysis run)Not measured41.7%Only MiMo-V2.5 measured
FrontierSWE12.0%Not measuredOnly Muse Spark 1.2 measured
WeirdML60.3%Not measuredOnly Muse Spark 1.2 measured
ALE-BenchNot measured514.0Only MiMo-V2.5 measured
LMArena Text: coding15051469Muse Spark 1.2
LMArena Text: software and IT15051463Muse Spark 1.2
LMArena WebDev: React15261425Muse Spark 1.2
LMArena WebDev: HTML15431429Muse Spark 1.2
Neither model has a result on the other 17 boards here
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
Intelligence benchmarks for Muse Spark 1.2 and MiMo-V2.5
BenchmarkMuse Spark 1.2MiMo-V2.5Leader
AA Intelligence Index39.621.8Muse Spark 1.2
Epoch Capabilities Index155.1Not measuredOnly Muse Spark 1.2 measured
Agentic workLike-for-likePublic boards, shown as published, kept out of the index50
Agentic work benchmarks for Muse Spark 1.2 and MiMo-V2.5
BenchmarkMuse Spark 1.2MiMo-V2.5Leader
AA Agentic Index43.215.8Muse Spark 1.2
Design Arena: agents building web apps1221Not measuredOnly Muse Spark 1.2 measured
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%Not measuredOnly Muse Spark 1.2 measured
LiveBench browser36.0%Not measuredOnly Muse Spark 1.2 measured
LiveBench long agentic21.3%Not measuredOnly Muse Spark 1.2 measured
SREBench (Vals AI)0.0%Not measuredOnly Muse Spark 1.2 measured
Finance Agent (Vals AI)60.6%36.7%Muse Spark 1.2
Tax Agent Bench (Vals AI)32.8%7.8%Muse Spark 1.2
Legal Research Bench (Vals AI)43.8%9.1%Muse Spark 1.2
Excel Modeling Benchmark (Vals AI)57.0%55.1%Muse Spark 1.2
BioMysteryBench (Vals AI)64.8%Not measuredOnly Muse Spark 1.2 measured
τ²-Bench TelecomNot measured90.6%Only MiMo-V2.5 measured
APEX-Agents45.4%Not measuredOnly Muse Spark 1.2 measured
Neither model has a result on the other 22 boards here
ReasoningLike-for-likePublic boards, shown as published, kept out of the index70
Reasoning benchmarks for Muse Spark 1.2 and MiMo-V2.5
BenchmarkMuse Spark 1.2MiMo-V2.5Leader
GPQA DiamondNot measured81.6%Only MiMo-V2.5 measured
LiveBench reasoning90.0%Not measuredOnly Muse Spark 1.2 measured
MMMU Pro (Vals AI)86.1%80.0%Muse Spark 1.2
GPQA Diamond (Artificial Analysis run)90.4%84.9%Muse Spark 1.2
Humanity's Last Exam (Artificial Analysis run)45.5%27.2%Muse Spark 1.2
SimpleBench74.5%Not measuredOnly Muse Spark 1.2 measured
Chess puzzles27.0%Not measuredOnly Muse Spark 1.2 measured
LMArena Text: hard prompts14891450Muse Spark 1.2
LMArena Text: expert14751459Muse Spark 1.2
LMArena Text: hard prompts in English14871461Muse Spark 1.2
LMArena Vision: diagrams13171269Muse Spark 1.2
LMArena Vision: homeworkNot measured1262Only MiMo-V2.5 measured
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 1.2 and MiMo-V2.5
BenchmarkMuse Spark 1.2MiMo-V2.5Leader
ProofBench43.0%16.0%Muse Spark 1.2
LMArena Text: math14841436Muse Spark 1.2
LMArena Text: mathematical work14801451Muse Spark 1.2
Neither model has a result on the other 10 boards here
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index100
Knowledge benchmarks for Muse Spark 1.2 and MiMo-V2.5
BenchmarkMuse Spark 1.2MiMo-V2.5Leader
MMLU Pro88.3%82.9%Muse Spark 1.2
LegalBench (Vals AI)85.3%78.9%Muse Spark 1.2
CorpFin (Vals AI)70.9%59.9%Muse Spark 1.2
TaxEval (Vals AI)80.4%71.8%Muse Spark 1.2
MortgageTax (Vals AI)65.4%59.3%Muse Spark 1.2
MedCode (Vals AI)49.4%31.9%Muse Spark 1.2
SimpleQA Verified60.3%Not measuredOnly Muse Spark 1.2 measured
LMArena Text: science15001440Muse Spark 1.2
LMArena Text: medicine and healthcare14961432Muse Spark 1.2
LMArena Text: legal and government15171425Muse Spark 1.2
LMArena Text: business and finance14841432Muse 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 index80
Web design benchmarks for Muse Spark 1.2 and MiMo-V2.5
BenchmarkMuse Spark 1.2MiMo-V2.5Leader
Design Arena: websites13121265Muse Spark 1.2
Design Arena: UI components12981255Muse Spark 1.2
Design Arena: game dev13011249Muse Spark 1.2
Design Arena: data viz13341250Muse Spark 1.2
Design Arena: 3D13011215Muse Spark 1.2
Design Arena: all code categories13121260Muse Spark 1.2
Design Arena: SVG12841179Muse Spark 1.2
Design Arena: ASCII art12841140Muse Spark 1.2
LiveBench design67.1%Not measuredOnly Muse Spark 1.2 measured
GeneralLike-for-likePublic boards, shown as published, kept out of the index210
General benchmarks for Muse Spark 1.2 and MiMo-V2.5
BenchmarkMuse Spark 1.2MiMo-V2.5Leader
LiveBench data analysis76.5%Not measuredOnly Muse Spark 1.2 measured
Public Benefits Bench (Vals AI)68.5%Not measuredOnly Muse Spark 1.2 measured
SAGE (Vals AI)47.7%43.3%Muse Spark 1.2
MedScribe (Vals AI)90.1%72.2%Muse Spark 1.2
Vals Multimodal Index69.8%52.8%Muse Spark 1.2
IFBenchNot measured67.1%Only MiMo-V2.5 measured
Long context reasoning (AA-LCR)79.0%73.0%Muse Spark 1.2
DTBench94.7%Not measuredOnly Muse Spark 1.2 measured
LMCA48.4%Not measuredOnly Muse Spark 1.2 measured
LMArena Text14821428Muse Spark 1.2
LMArena Text: instruction following14621435Muse Spark 1.2
LMArena Text: creative writing14361393Muse Spark 1.2
LMArena Vision13041247Muse Spark 1.2
LMArena Text: English14831447Muse Spark 1.2
LMArena Text: non-English14761405Muse Spark 1.2
LMArena Text: Chinese15091469Muse Spark 1.2
LMArena Text: GermanNot measured1421Only MiMo-V2.5 measured
LMArena Text: JapaneseNot measured1306Only MiMo-V2.5 measured
LMArena Text: Korean14621361Muse Spark 1.2
LMArena Text: French14951448Muse Spark 1.2
LMArena Text: Spanish14841414Muse Spark 1.2
LMArena Text: Russian14831396Muse Spark 1.2
LMArena Text: PolishNot measured1413Only MiMo-V2.5 measured
LMArena Text: multi-turn15021445Muse Spark 1.2
LMArena Text: longer queries14731445Muse Spark 1.2
LMArena Text: writing and language14531409Muse Spark 1.2
LMArena Text: entertainment and media14431399Muse Spark 1.2
LMArena Vision: English12911259Muse Spark 1.2
LMArena Vision: ChineseNot measured1326Only MiMo-V2.5 measured
LMArena Vision: reading text13131256Muse Spark 1.2
LMArena Vision: humorNot measured1226Only MiMo-V2.5 measured
LMArena Vision: recognizing thingsNot measured1189Only MiMo-V2.5 measured
LMArena Vision: creative writingNot measured1230Only MiMo-V2.5 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 1.2 and MiMo-V2.5
BenchmarkMuse Spark 1.2MiMo-V2.5Leader
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
MiMo-V2.5$0.0003Fits in one request

MiMo-V2.5 costs less

Repository review

50K input + 3K output tokens

Muse Spark 1.2$0.075Fits in one request
MiMo-V2.5$0.0094Fits in one request

MiMo-V2.5 costs less

Agent loop

200K input + 10K output tokens

Muse Spark 1.2$0.292Fits in one request
MiMo-V2.5$0.037Fits in one request

MiMo-V2.5 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 MiMo-V2.5
SpecificationMeta Muse Spark 1.2Xiaomi MiMo-V2.5
MakerMetaXiaomi
WeightsNo public weights listedOpen weights
ReleasedAugust 5, 2026April 22, 2026
Context window1.05M1.05M
Input $/Mtok$1.25$0.168
Output $/Mtok$4.25$0.336
Coding index55.750.0
Independent measurements behind it53
Cost per solved task$0.64$0.01
SourceOpenRouter listingOpenRouter listing

Questions

Is Muse Spark 1.2 better than MiMo-V2.5 for coding?

Pick Muse Spark 1.2 for coding: it scores 55.7 on the Vibe Coding Index against 50.0 for MiMo-V2.5. Pick MiMo-V2.5 for output tokens 12.6x cheaper ($0.336 vs $4.25 per million) and a lower cost per solved task ($0.01 against $0.64).

Which is cheaper, Muse Spark 1.2 or MiMo-V2.5?

Muse Spark 1.2 costs $1.25 per million input tokens and $4.25 per million output tokens; MiMo-V2.5 costs $0.168 and $0.336. Per solved SWE-bench Verified task, Muse Spark 1.2 costs $0.64 and MiMo-V2.5 $0.01.

Which has the bigger context window, Muse Spark 1.2 or MiMo-V2.5?

MiMo-V2.5, with 1.05M tokens against 1.05M.

How many benchmarks is the Muse Spark 1.2 vs MiMo-V2.5 comparison based on?

66 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 MiMo-V2.5's on 3. 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-1-2-vs-xiaomi-mimo-v2-5">LLMBenchmark.ai, Muse Spark 1.2 vs MiMo-V2.5</a></p>