Gemini 3.1 Flash Lite Preview vs Muse Spark 1.3
Updated October 21, 2026. 60 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.
Decision reading
Pick Muse Spark 1.3 for coding: it scores 79.7 on the Vibe Coding Index against 8.1 for Gemini 3.1 Flash Lite Preview.
Pick Gemini 3.1 Flash Lite Preview when output tokens cost 2.8x less.
- Shared results
- 60
- Gemini 3.1 Flash Lite Preview only
- 17
- Muse Spark 1.3 only
- 32
- Like-for-like categories
- 8 of 9
Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.
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, four public coding benchmarks
Muse Spark 1.3
Muse Spark 1.3 scores 79.7 against 8.1.
1 and 2 benchmarks behind the scores
Intelligence
AA Intelligence Index
Muse Spark 1.3
Muse Spark 1.3 leads, 48.1 against 15.6.
Same board, both measured
Agentic work
AA Agentic Index
Muse Spark 1.3
Muse Spark 1.3 leads, 55.5 against 1.6.
Same board, both measured
Reasoning
GPQA Diamond
No call
Only Gemini 3.1 Flash Lite Preview has a GPQA Diamond result, 81.1%.
Directional only
Math
AIME
No call
Only Gemini 3.1 Flash Lite Preview has a AIME result, 83.3%.
Directional only
Knowledge
MMLU Pro
No call
Only Gemini 3.1 Flash Lite Preview has a MMLU Pro result, 86.2%.
Directional only
Web design
Design Arena: websites
Muse Spark 1.3
Muse Spark 1.3 leads, 1356 against 1083.
Same board, both measured
Long documents
Listed context window
No call
Both take 1.05M tokens.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
Gemini 3.1 Flash Lite Preview
Gemini 3.1 Flash Lite Preview $0.0010, Muse Spark 1.3 $0.0034 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Gemini 3.1 Flash Lite Preview has the number, $0.18.
Directional only
At a glance
- Coding index
- Gemini 3.1 Flash Lite Preview 8.1 from 1 benchmark, Muse Spark 1.3 79.7 from 2 benchmarks.
- Widest category
- Agentic work, 41.5 points apart on average over 5 shared benchmarks.
- Widest single gap
- Vibe Code Bench (Vals AI): Gemini 3.1 Flash Lite Preview 0.0% against Muse Spark 1.3 82.9%, 82.9 points apart on a 0 to 100 scale.
- Output price
- Gemini 3.1 Flash Lite Preview $1.50 against Muse Spark 1.3 $4.25 per million output tokens, 2.8x 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 | Gemini 3.1 Flash Lite Preview | Bars | Muse Spark 1.3 | Ties |
|---|---|---|---|---|
| Coding | 0 | 12 | ||
| Intelligence | 0 | 1 | ||
| Agentic work | 0 | 5 | ||
| Reasoning | 0 | 5 | ||
| Math | 0 | 2 | ||
| Knowledge | 0 | 4 | ||
| Web design | 0 | 8 | ||
| General | 0 | 23 | ||
| All shared boards | 0 | 60 |
CodingLike-for-likeFour of these boards feed the Vibe Coding Index012
| Benchmark | Gemini 3.1 Flash Lite Preview | Muse Spark 1.3 | Leader |
|---|---|---|---|
| LiveBench coding | Not measured | 90.2% | Only Muse Spark 1.3 measured |
| LMArena WebDev | 1257 | 1659 | Muse Spark 1.3 |
| AA Coding Index | 34.7 | 75.8 | Muse Spark 1.3 |
| LiveCodeBench (Vals AI) | 80.1% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| SWE-bench Verified (Vals AI) | 62.8% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| Terminal-Bench 4 (Vals AI) | Not measured | 10.6% | Only Muse Spark 1.3 measured |
| Vibe Code Bench (Vals AI) | 0.0% | 82.9% | Muse Spark 1.3 |
| Code migration (Vals AI) | 4.6% | 27.6% | Muse Spark 1.3 |
| ProgramBench (Vals AI) | 0.0% | 0.5% | Muse Spark 1.3 |
| IOI (Vals AI) | Not measured | 43.9% | Only Muse Spark 1.3 measured |
| Terminal-Bench 2.1 (Vals AI) | 34.1% | 72.3% | Muse Spark 1.3 |
| CyberBench (Vals AI) | Not measured | 69.4% | Only Muse Spark 1.3 measured |
| SciCode | Not measured | 59.7% | Only Muse Spark 1.3 measured |
| FrontierSWE | Not measured | 25.8% | Only Muse Spark 1.3 measured |
| ALE-Bench | 797.7 | 1688.3 | Muse Spark 1.3 |
| LMArena Text: coding | 1400 | 1510 | Muse Spark 1.3 |
| LMArena Text: software and IT | 1413 | 1511 | Muse Spark 1.3 |
| LMArena WebDev: React | 1245 | 1672 | Muse Spark 1.3 |
| LMArena WebDev: HTML | 1276 | 1653 | Muse Spark 1.3 |
| LMArena WebDev: from an image | 1336 | 1640 | Muse 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 index01
| Benchmark | Gemini 3.1 Flash Lite Preview | Muse Spark 1.3 | Leader |
|---|---|---|---|
| AA Intelligence Index | 15.6 | 48.1 | Muse Spark 1.3 |
| Epoch Capabilities Index | Not measured | 157.2 | Only Muse Spark 1.3 measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index05
| Benchmark | Gemini 3.1 Flash Lite Preview | Muse Spark 1.3 | Leader |
|---|---|---|---|
| AA Agentic Index | 1.6 | 55.5 | Muse Spark 1.3 |
| Design Arena: agents building web apps | Not measured | 1297 | Only Muse Spark 1.3 measured |
| Design Arena: agents building full-stack apps | Not measured | 1295 | Only Muse Spark 1.3 measured |
| Design Arena: agents building mobile apps | Not measured | 1217 | Only Muse Spark 1.3 measured |
| Design Arena: agents building Godot games | Not measured | 1241 | Only Muse Spark 1.3 measured |
| Design Arena: PowerPoint slides | Not measured | 1244 | Only Muse Spark 1.3 measured |
| Design Arena: spreadsheets | Not measured | 1048 | Only Muse Spark 1.3 measured |
| LiveBench research | Not measured | 68.6% | Only Muse Spark 1.3 measured |
| LiveBench browser | Not measured | 80.0% | Only Muse Spark 1.3 measured |
| LiveBench long agentic | Not measured | 40.4% | Only Muse Spark 1.3 measured |
| Finance Agent (Vals AI) | 30.0% | 58.9% | Muse Spark 1.3 |
| Tax Agent Bench (Vals AI) | 3.1% | 36.0% | Muse Spark 1.3 |
| Legal Research Bench (Vals AI) | 3.4% | 40.9% | Muse Spark 1.3 |
| Excel Modeling Benchmark (Vals AI) | 8.6% | 62.7% | Muse Spark 1.3 |
| Terminal-Bench-Science (Vals AI) | Not measured | 4.3% | Only Muse Spark 1.3 measured |
| APEX-Agents | Not measured | 58.6% | Only Muse Spark 1.3 measured |
| Neither model has a result on the other 23 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index05
| Benchmark | Gemini 3.1 Flash Lite Preview | Muse Spark 1.3 | Leader |
|---|---|---|---|
| GPQA Diamond | 81.1% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| LiveBench reasoning | Not measured | 89.7% | Only Muse Spark 1.3 measured |
| MMMU Pro (Vals AI) | 82.5% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| GPQA Diamond (Artificial Analysis run) | Not measured | 94.1% | Only Muse Spark 1.3 measured |
| Humanity's Last Exam (Artificial Analysis run) | Not measured | 48.7% | Only Muse Spark 1.3 measured |
| Chess puzzles | Not measured | 37.0% | Only Muse Spark 1.3 measured |
| Mystery game puzzles | Not measured | 25.0% | Only Muse Spark 1.3 measured |
| LMArena Text: hard prompts | 1407 | 1503 | Muse Spark 1.3 |
| LMArena Text: expert | 1398 | 1519 | Muse Spark 1.3 |
| LMArena Text: hard prompts in English | 1403 | 1500 | Muse Spark 1.3 |
| LMArena Vision: diagrams | 1242 | 1330 | Muse Spark 1.3 |
| LMArena Vision: homework | 1271 | 1296 | Muse Spark 1.3 |
| Neither model has a result on the other 9 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index02
| Benchmark | Gemini 3.1 Flash Lite Preview | Muse Spark 1.3 | Leader |
|---|---|---|---|
| AIME | 83.3% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| OTIS Mock AIME | Not measured | 99.2% | Only Muse Spark 1.3 measured |
| FrontierMath, tiers 1 to 3 | Not measured | 74.4% | Only Muse Spark 1.3 measured |
| FrontierMath, tier 4 | Not measured | 46.3% | Only Muse Spark 1.3 measured |
| ProofBench | Not measured | 58.0% | Only Muse Spark 1.3 measured |
| LMArena Text: math | 1428 | 1497 | Muse Spark 1.3 |
| LMArena Text: mathematical work | 1417 | 1491 | Muse Spark 1.3 |
| Neither model has a result on the other 6 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index04
| Benchmark | Gemini 3.1 Flash Lite Preview | Muse Spark 1.3 | Leader |
|---|---|---|---|
| MMLU Pro | 86.2% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| LegalBench (Vals AI) | 83.8% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| CaseLaw (Vals AI) | 55.0% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| CorpFin (Vals AI) | 59.4% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| TaxEval (Vals AI) | 71.8% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| MortgageTax (Vals AI) | 68.0% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| MedCode (Vals AI) | 47.6% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Text: science | 1425 | 1507 | Muse Spark 1.3 |
| LMArena Text: medicine and healthcare | 1428 | 1493 | Muse Spark 1.3 |
| LMArena Text: legal and government | 1418 | 1499 | Muse Spark 1.3 |
| LMArena Text: business and finance | 1389 | 1490 | Muse 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
| Benchmark | Gemini 3.1 Flash Lite Preview | Muse Spark 1.3 | Leader |
|---|---|---|---|
| Design Arena: websites | 1083 | 1356 | Muse Spark 1.3 |
| Design Arena: UI components | 1071 | 1352 | Muse Spark 1.3 |
| Design Arena: game dev | 1029 | 1329 | Muse Spark 1.3 |
| Design Arena: data viz | 1045 | 1343 | Muse Spark 1.3 |
| Design Arena: 3D | 1048 | 1359 | Muse Spark 1.3 |
| Design Arena: all code categories | 1072 | 1353 | Muse Spark 1.3 |
| Design Arena: SVG | 1052 | 1300 | Muse Spark 1.3 |
| Design Arena: ASCII art | 1166 | 1280 | Muse Spark 1.3 |
| LiveBench design | Not measured | 74.8% | Only Muse Spark 1.3 measured |
GeneralLike-for-likePublic boards, shown as published, kept out of the index023
| Benchmark | Gemini 3.1 Flash Lite Preview | Muse Spark 1.3 | Leader |
|---|---|---|---|
| LiveBench data analysis | Not measured | 79.6% | Only Muse Spark 1.3 measured |
| SAGE (Vals AI) | 49.5% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| MedScribe (Vals AI) | 63.9% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| Vals Multimodal Index | 41.4% | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| Long context reasoning (AA-LCR) | Not measured | 83.0% | Only Muse Spark 1.3 measured |
| DTBench | Not measured | 96.5% | Only Muse Spark 1.3 measured |
| LMCA | Not measured | 53.9% | Only Muse Spark 1.3 measured |
| LMArena Text | 1416 | 1490 | Muse Spark 1.3 |
| LMArena Text: instruction following | 1377 | 1479 | Muse Spark 1.3 |
| LMArena Text: creative writing | 1401 | 1462 | Muse Spark 1.3 |
| LMArena Vision | 1240 | 1308 | Muse Spark 1.3 |
| LMArena Text: English | 1414 | 1495 | Muse Spark 1.3 |
| LMArena Text: non-English | 1410 | 1481 | Muse Spark 1.3 |
| LMArena Text: Chinese | 1460 | 1532 | Muse Spark 1.3 |
| LMArena Text: German | 1430 | 1513 | Muse Spark 1.3 |
| LMArena Text: Japanese | 1413 | 1470 | Muse Spark 1.3 |
| LMArena Text: Korean | 1392 | 1490 | Muse Spark 1.3 |
| LMArena Text: French | 1424 | 1511 | Muse Spark 1.3 |
| LMArena Text: Spanish | 1421 | 1496 | Muse Spark 1.3 |
| LMArena Text: Russian | 1420 | 1491 | Muse Spark 1.3 |
| LMArena Text: Polish | 1443 | 1490 | Muse Spark 1.3 |
| LMArena Text: multi-turn | 1417 | 1487 | Muse Spark 1.3 |
| LMArena Text: longer queries | 1394 | 1488 | Muse Spark 1.3 |
| LMArena Text: writing and language | 1408 | 1470 | Muse Spark 1.3 |
| LMArena Text: entertainment and media | 1386 | 1457 | Muse Spark 1.3 |
| LMArena Vision: English | 1232 | 1298 | Muse Spark 1.3 |
| LMArena Vision: Chinese | 1278 | 1384 | Muse Spark 1.3 |
| LMArena Vision: reading text | 1246 | 1319 | Muse Spark 1.3 |
| LMArena Vision: humor | 1266 | 1293 | Muse Spark 1.3 |
| LMArena Vision: captioning | 1259 | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Vision: recognizing things | 1308 | Not measured | Only Gemini 3.1 Flash Lite Preview measured |
| LMArena Vision: creative writing | 1248 | 1296 | Muse 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
| Benchmark | Gemini 3.1 Flash Lite Preview | Muse Spark 1.3 | 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
Gemini 3.1 Flash Lite Preview costs less
Repository review
50K input + 3K output tokens
Gemini 3.1 Flash Lite Preview costs less
Agent loop
200K input + 10K output tokens
Gemini 3.1 Flash Lite Preview 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 | Google Gemini 3.1 Flash Lite Preview | Meta Muse Spark 1.3 |
|---|---|---|
| Maker | Meta | |
| Weights | No public weights listed | No public weights listed |
| Released | March 3, 2026 | September 2, 2026 |
| Context window | 1.05M | 1.05M |
| Input $/Mtok | $0.25 | $1.25 |
| Output $/Mtok | $1.50 | $4.25 |
| Coding index | 8.1 | 79.7 |
| Independent measurements behind it | 1 | 2 |
| Cost per solved task | $0.18 | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Gemini 3.1 Flash Lite Preview better than Muse Spark 1.3 for coding?
Pick Muse Spark 1.3 for coding: it scores 79.7 on the Vibe Coding Index against 8.1 for Gemini 3.1 Flash Lite Preview. Pick Gemini 3.1 Flash Lite Preview when output tokens cost 2.8x less.
Which is cheaper, Gemini 3.1 Flash Lite Preview or Muse Spark 1.3?
Gemini 3.1 Flash Lite Preview costs $0.25 per million input tokens and $1.50 per million output tokens; Muse Spark 1.3 costs $1.25 and $4.25. Cost per solved task is known for Gemini 3.1 Flash Lite Preview only.
Which has the bigger context window, Gemini 3.1 Flash Lite Preview or Muse Spark 1.3?
Neither: both take 1.05M tokens.
How many benchmarks is the Gemini 3.1 Flash Lite Preview vs Muse Spark 1.3 comparison based on?
60 benchmarks have a result for both models as of October 21, 2026. Gemini 3.1 Flash Lite Preview's coding index rests on 1 independent benchmark and Muse Spark 1.3's on 2. Where only one model has a result, the page says so instead of naming a winner.