Muse Spark 1.2 vs Inkling 2 Small
Muse Spark 1.2 leads Inkling 2 Small on coding, 50.9 to 48.9 on the Vibe Coding Index, and Inkling 2 Small costs 4.3x less per output token ($1.00 vs $4.25 per million). Updated November 14, 2026; 34 benchmarks have a result for both.
Muse Spark 1.2 or Inkling 2 Small: which to pick
Pick Muse Spark 1.2 for coding: it scores 50.9 on the Vibe Coding Index against 48.9 for Inkling 2 Small.
Pick Inkling 2 Small for output tokens 4.3x cheaper ($1.00 vs $4.25 per million) and work measured by LMArena WebDev or Terminal-Bench 4 (Vals AI), where it leads.
- Shared results
- 34
- Muse Spark 1.2 only
- 63
- Inkling 2 Small only
- 17
- Like-for-like categories
- 5 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.
Coding
Vibe Coding Index, six public coding benchmarks
Muse Spark 1.2
Muse Spark 1.2 scores 50.9 against 48.9.
4 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
No call
Only Inkling 2 Small has a AA Intelligence Index result, 30.6.
Directional only
Agentic work
AA Agentic Index
No call
Only Muse Spark 1.2 has a AA Agentic Index result, 43.2.
Directional only
Knowledge
MMLU Pro
No call
Only Muse Spark 1.2 has a MMLU Pro result, 88.3%.
Directional only
Web design
Design Arena: websites
No call
Only Muse Spark 1.2 has a Design Arena: websites result, 1309.
Directional only
General
Vals Index
No call
Only Inkling 2 Small has a Vals Index result, 56.1%.
Directional only
Long documents
Listed context window
No call
Both take 1.05M tokens.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Inkling 2 Small
Muse Spark 1.2 $0.0034, Inkling 2 Small $0.0008 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Muse Spark 1.2 has the number, $0.64.
Directional only
At a glance
- Coding index
- Muse Spark 1.2 50.9 from 4 benchmarks, Inkling 2 Small 48.9 from 3 benchmarks.
- Widest category
- Knowledge, 13.4 points apart on average over 2 shared benchmarks.
- Widest single gap
- LMArena Text: Russian: Muse Spark 1.2 1488 against Inkling 2 Small 1377, 18.5 points apart on a 0 to 100 scale.
- Output price
- Muse Spark 1.2 $4.25 against Inkling 2 Small $1.00 per million output tokens, 4.3x apart.
- Context window
- Both take 1.05M tokens.
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.
| Category | Muse Spark 1.2 | Bars | Inkling 2 Small | Ties |
|---|---|---|---|---|
| Coding | 3 | 7 | 1 tie | |
| Agentic work | 0 | 5 | ||
| Reasoning | 4 | 0 | ||
| Knowledge | 2 | 0 | ||
| General | 10 | 2 | ||
| All shared boards | 19 | 14 | 1 tie |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index37
| Benchmark | Muse Spark 1.2 | Inkling 2 Small | Leader |
|---|---|---|---|
| LMArena WebDev | 1534 | 1647 | Inkling 2 Small |
| AA Coding Index | 72.2 | Not measured | Only Muse Spark 1.2 measured |
| SWE-bench Verified (Vals AI) | 86.6% | Not measured | Only Muse Spark 1.2 measured |
| Terminal-Bench 4 (Vals AI) | 6.1% | 12.6% | Inkling 2 Small |
| Vibe Code Bench (Vals AI) | 79.1% | 81.5% | Inkling 2 Small |
| Code migration (Vals AI) | 29.9% | Not measured | Only Muse Spark 1.2 measured |
| ProgramBench (Vals AI) | 0.5% | 0.5% | Tie |
| IOI (Vals AI) | 21.8% | Not measured | Only Muse Spark 1.2 measured |
| Terminal-Bench 2.1 (Vals AI) | 69.7% | Not measured | Only Muse Spark 1.2 measured |
| SWE-bench Multimodal (Vals AI) | Not measured | 43.1% | Only Inkling 2 Small measured |
| SkillsBench (Vals AI) | 53.0% | Not measured | Only Muse Spark 1.2 measured |
| CyberBench (Vals AI) | 69.5% | 72.7% | Inkling 2 Small |
| SciCode | 57.4% | 52.3% | Muse Spark 1.2 |
| Terminal-Bench 4.0 (Artificial Analysis run) | 7.1% | 13.1% | Inkling 2 Small |
| FrontierCode 2.0 | Not measured | 25.4% | Only Inkling 2 Small measured |
| FrontierSWE | 12.0% | Not measured | Only Muse Spark 1.2 measured |
| WeirdML | 60.3% | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: coding | 1506 | 1455 | Muse Spark 1.2 |
| LMArena Text: software and IT | 1506 | 1443 | Muse Spark 1.2 |
| LMArena WebDev: React | 1525 | 1660 | Inkling 2 Small |
| LMArena WebDev: HTML | 1542 | 1661 | Inkling 2 Small |
| SWE-Bench Pro V2 | Not measured | 97.7% | Only Inkling 2 Small measured |
| GameBench 2 | 57.3 | Not measured | Only Muse Spark 1.2 measured |
| ProgramBench | 0.0% | Not measured | Only Muse Spark 1.2 measured |
| Neither model has a result on the other 28 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
| Benchmark | Muse Spark 1.2 | Inkling 2 Small | Leader |
|---|---|---|---|
| AA Intelligence Index | Not measured | 30.6 | Only Inkling 2 Small measured |
| Epoch Capabilities Index | 155.0 | Not measured | Only Muse Spark 1.2 measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index05
| Benchmark | Muse Spark 1.2 | Inkling 2 Small | Leader |
|---|---|---|---|
| AA Agentic Index | 43.2 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: agents building web apps | 1199 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: agents building full-stack apps | 1184 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: agents building mobile apps | 1173 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: agents building Android apps | 1210 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: agents building games | 1122 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: HTML slides | 1028 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: PowerPoint slides | 1159 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: spreadsheets | 1016 | Not measured | Only Muse Spark 1.2 measured |
| SREBench (Vals AI) | 0.0% | 1.9% | Inkling 2 Small |
| Finance Agent (Vals AI) | 60.6% | Not measured | Only Muse Spark 1.2 measured |
| Tax Agent Bench (Vals AI) | 32.8% | 38.9% | Inkling 2 Small |
| Legal Research Bench (Vals AI) | 43.8% | 46.6% | Inkling 2 Small |
| Harvey's Legal Agent Benchmark (Vals AI) | Not measured | 21.7% | Only Inkling 2 Small measured |
| Excel Modeling Benchmark (Vals AI) | 57.0% | Not measured | Only Muse Spark 1.2 measured |
| BioMysteryBench (Vals AI) | 64.8% | 70.0% | Inkling 2 Small |
| Terminal-Bench-Science (Vals AI) | Not measured | 2.9% | Only Inkling 2 Small measured |
| Vals Science Index | Not measured | 32.7% | Only Inkling 2 Small measured |
| APEX-Agents | 45.4% | 46.8% | Inkling 2 Small |
| MCP Atlas | Not measured | 85.4% | Only Inkling 2 Small measured |
| Toolathlon-Verified | 75.9% | Not measured | Only Muse Spark 1.2 measured |
| Neither model has a result on the other 23 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index40
| Benchmark | Muse Spark 1.2 | Inkling 2 Small | Leader |
|---|---|---|---|
| MysteryMechanism (Vals AI) | Not measured | 25.2% | Only Inkling 2 Small measured |
| MMMU Pro (Vals AI) | 86.1% | Not measured | Only Muse Spark 1.2 measured |
| GPQA Diamond (Artificial Analysis run) | 90.4% | Not measured | Only Muse Spark 1.2 measured |
| Humanity's Last Exam (Artificial Analysis run) | 45.5% | 44.1% | Muse Spark 1.2 |
| HLE-Diamond (Artificial Analysis run) | Not measured | 28.7% | Only Inkling 2 Small measured |
| CritPt v2, hard subset (Artificial Analysis run) | Not measured | 35.0% | Only Inkling 2 Small measured |
| ARC-AGI | Not measured | 96.5% | Only Inkling 2 Small measured |
| ARC-AGI-2 | Not measured | 81.7% | Only Inkling 2 Small measured |
| SimpleBench | 74.5% | Not measured | Only Muse Spark 1.2 measured |
| Chess puzzles | 27.0% | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: hard prompts | 1492 | 1421 | Muse Spark 1.2 |
| LMArena Text: expert | 1486 | 1478 | Muse Spark 1.2 |
| LMArena Text: hard prompts in English | 1489 | 1424 | Muse Spark 1.2 |
| LMArena Vision: diagrams | 1314 | Not measured | Only Muse Spark 1.2 measured |
| Neither model has a result on the other 12 boards here | |||
MathDirectional onlyPublic boards, shown as published, kept out of the index4 boards, none shared
| Benchmark | Muse Spark 1.2 | Inkling 2 Small | Leader |
|---|---|---|---|
| ProofBench | 43.0% | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: math | 1478 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: mathematical work | 1477 | Not measured | Only Muse Spark 1.2 measured |
| MathArena | Not measured | 42.4% | Only Inkling 2 Small measured |
| Neither model has a result on the other 10 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Muse Spark 1.2 | Inkling 2 Small | Leader |
|---|---|---|---|
| MMLU Pro | 88.3% | Not measured | Only Muse Spark 1.2 measured |
| LegalBench (Vals AI) | 85.3% | Not measured | Only Muse Spark 1.2 measured |
| CorpFin (Vals AI) | 70.9% | Not measured | Only Muse Spark 1.2 measured |
| TaxEval (Vals AI) | 80.4% | Not measured | Only Muse Spark 1.2 measured |
| MortgageTax (Vals AI) | 65.4% | Not measured | Only Muse Spark 1.2 measured |
| MedCode (Vals AI) | 49.4% | Not measured | Only Muse Spark 1.2 measured |
| AA-Omniscience | Not measured | 16.1 | Only Inkling 2 Small measured |
| SimpleQA Verified | 60.3% | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: science | 1502 | 1409 | Muse Spark 1.2 |
| LMArena Text: medicine and healthcare | 1490 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: legal and government | 1505 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: business and finance | 1484 | 1415 | Muse Spark 1.2 |
| Neither model has a result on the other 9 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
| Benchmark | Muse Spark 1.2 | Inkling 2 Small | Leader |
|---|---|---|---|
| Design Arena: websites | 1309 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: UI components | 1299 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: game dev | 1294 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: data viz | 1329 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: 3D | 1283 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: all code categories | 1306 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: SVG | 1272 | Not measured | Only Muse Spark 1.2 measured |
| Design Arena: ASCII art | 1277 | Not measured | Only Muse Spark 1.2 measured |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index102
| Benchmark | Muse Spark 1.2 | Inkling 2 Small | Leader |
|---|---|---|---|
| Vals Index | Not measured | 56.1% | Only Inkling 2 Small measured |
| Public Benefits Bench (Vals AI) | 68.5% | Not measured | Only Muse Spark 1.2 measured |
| SAGE (Vals AI) | Not measured | 88.6% | Only Inkling 2 Small measured |
| MedScribe (Vals AI) | 90.1% | Not measured | Only Muse Spark 1.2 measured |
| Vals Multimodal Index | 69.8% | Not measured | Only Muse Spark 1.2 measured |
| Long context reasoning (AA-LCR) | 79.0% | 83.3% | Inkling 2 Small |
| GDPval-AA | 1478 | 1630 | Inkling 2 Small |
| DTBench | 94.7% | Not measured | Only Muse Spark 1.2 measured |
| LMCA | 48.4% | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text | 1483 | 1403 | Muse Spark 1.2 |
| LMArena Text: instruction following | 1469 | 1408 | Muse Spark 1.2 |
| LMArena Text: creative writing | 1439 | 1348 | Muse Spark 1.2 |
| LMArena Vision | 1305 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: English | 1482 | 1418 | Muse Spark 1.2 |
| LMArena Text: non-English | 1478 | 1390 | Muse Spark 1.2 |
| LMArena Text: Chinese | 1517 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: German | 1490 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: Japanese | 1488 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: Korean | 1453 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: French | 1502 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: Spanish | 1490 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: Russian | 1488 | 1377 | Muse Spark 1.2 |
| LMArena Text: Polish | 1508 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Text: multi-turn | 1498 | 1408 | Muse Spark 1.2 |
| LMArena Text: longer queries | 1476 | 1403 | Muse Spark 1.2 |
| LMArena Text: writing and language | 1456 | 1381 | Muse Spark 1.2 |
| LMArena Text: entertainment and media | 1445 | 1359 | Muse Spark 1.2 |
| LMArena Vision: English | 1292 | Not measured | Only Muse Spark 1.2 measured |
| LMArena Vision: reading text | 1312 | Not measured | Only Muse Spark 1.2 measured |
| Neither model has a result on the other 20 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Muse Spark 1.2 | Inkling 2 Small | Leader |
|---|---|---|---|
| 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
Inkling 2 Small costs less
Repository review
50K input + 3K output tokens
Inkling 2 Small costs less
Agent loop
200K input + 10K output tokens
Inkling 2 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.
| Specification | Meta Muse Spark 1.2 | Thinking Machines Inkling 2 Small |
|---|---|---|
| Maker | Meta | Thinking Machines |
| Weights | No public weights listed | Open weights |
| Released | August 5, 2026 | November 9, 2026 |
| Context window | 1.05M | 1.05M |
| Input $/Mtok | $1.25 | $0.30 |
| Output $/Mtok | $4.25 | $1.00 |
| Coding index | 50.9 | 48.9 |
| Independent measurements behind it | 4 | 3 |
| Cost per solved task | $0.64 | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Muse Spark 1.2 better than Inkling 2 Small for coding?
Pick Muse Spark 1.2 for coding: it scores 50.9 on the Vibe Coding Index against 48.9 for Inkling 2 Small. Pick Inkling 2 Small for output tokens 4.3x cheaper ($1.00 vs $4.25 per million) and work measured by LMArena WebDev or Terminal-Bench 4 (Vals AI), where it leads.
Which is cheaper, Muse Spark 1.2 or Inkling 2 Small?
Muse Spark 1.2 costs $1.25 per million input tokens and $4.25 per million output tokens; Inkling 2 Small costs $0.30 and $1.00. Cost per solved task is known for Muse Spark 1.2 only.
Which has the bigger context window, Muse Spark 1.2 or Inkling 2 Small?
Neither: both take 1.05M tokens.
How many benchmarks is the Muse Spark 1.2 vs Inkling 2 Small comparison based on?
34 benchmarks have a result for both models as of November 14, 2026. Muse Spark 1.2's coding index rests on 4 independent benchmarks and Inkling 2 Small's on 3. Where only one model has a result, the page says so instead of naming a winner.