Muse Spark Open vs MiniMax M3.1 Flash
MiniMax M3.1 Flash leads Muse Spark Open on coding, 59.0 to 47.4 on the Vibe Coding Index, and MiniMax M3.1 Flash costs 7.1x less per output token ($0.60 vs $4.25 per million). Updated October 22, 2026; 19 benchmarks have a result for both.
Muse Spark Open or MiniMax M3.1 Flash: which to pick
Pick MiniMax M3.1 Flash for coding: it scores 59.0 on the Vibe Coding Index against 47.4 for Muse Spark Open.
Pick Muse Spark Open for a larger context window (1.05M against 1M tokens) and work measured by Vibe Code Bench (Vals AI) or SciCode, where it leads.
- Shared results
- 19
- Muse Spark Open only
- 14
- MiniMax M3.1 Flash only
- 1
- 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
MiniMax M3.1 Flash
MiniMax M3.1 Flash scores 59.0 against 47.4.
4 benchmarks behind each score
Intelligence
AA Intelligence Index
No call
Only MiniMax M3.1 Flash has a AA Intelligence Index result, 42.7.
Directional only
Web design
Design Arena: websites
No call
Only Muse Spark Open has a Design Arena: websites result, 1317.
Directional only
General
Vals Index
MiniMax M3.1 Flash
MiniMax M3.1 Flash leads, 53.8% against 48.6%.
Same board, both measured
Long documents
Listed context window
Muse Spark Open
Muse Spark Open takes 1.05M tokens against 1M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiniMax M3.1 Flash
Muse Spark Open $0.0034, MiniMax M3.1 Flash $0.0004 per turn.
List prices
At a glance
- Coding index
- Muse Spark Open 47.4 from 4 benchmarks, MiniMax M3.1 Flash 59.0 from 4 benchmarks.
- Widest category
- Agentic work, 17.8 points apart on average over 6 shared benchmarks.
- Widest single gap
- LiveBench browser: Muse Spark Open 36.0% against MiniMax M3.1 Flash 92.0%, 56.0 points apart on a 0 to 100 scale.
- Output price
- Muse Spark Open $4.25 against MiniMax M3.1 Flash $0.60 per million output tokens, 7.1x apart.
- Context window
- Muse Spark Open takes 1.05M tokens, MiniMax M3.1 Flash 1M.
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 Open | Bars | MiniMax M3.1 Flash | Ties |
|---|---|---|---|---|
| Coding | 2 | 5 | ||
| Agentic work | 3 | 3 | ||
| Reasoning | 0 | 2 | ||
| Web design | 0 | 1 | ||
| General | 0 | 3 | ||
| All shared boards | 5 | 14 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index25
| Benchmark | Muse Spark Open | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| LiveBench coding | 73.6% | 83.9% | MiniMax M3.1 Flash |
| LMArena WebDev | 1528 | 1587 | MiniMax M3.1 Flash |
| Terminal-Bench 4 (Vals AI) | 6.6% | 25.3% | MiniMax M3.1 Flash |
| Vibe Code Bench (Vals AI) | 76.2% | 73.9% | Muse Spark Open |
| Code migration (Vals AI) | 21.2% | Not measured | Only Muse Spark Open measured |
| SciCode | 58.4% | 53.4% | Muse Spark Open |
| ALE-Bench | 1590.1 | Not measured | Only Muse Spark Open measured |
| LMArena WebDev: React | 1529 | 1609 | MiniMax M3.1 Flash |
| LMArena WebDev: HTML | 1495 | 1529 | MiniMax M3.1 Flash |
| SWE-Bench Pro V2 | 95.0% | Not measured | Only Muse Spark Open measured |
| Neither model has a result on the other 33 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
| Benchmark | Muse Spark Open | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| AA Intelligence Index | Not measured | 42.7 | Only MiniMax M3.1 Flash measured |
| Epoch Capabilities Index | 155.1 | Not measured | Only Muse Spark Open measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index33
| Benchmark | Muse Spark Open | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| LiveBench research | 80.3% | 72.7% | Muse Spark Open |
| LiveBench browser | 36.0% | 92.0% | MiniMax M3.1 Flash |
| LiveBench long agentic | 18.9% | 34.7% | MiniMax M3.1 Flash |
| Finance Agent (Vals AI) | 61.3% | Not measured | Only Muse Spark Open measured |
| Tax Agent Bench (Vals AI) | 26.3% | 32.1% | MiniMax M3.1 Flash |
| Legal Research Bench (Vals AI) | 38.5% | 34.1% | Muse Spark Open |
| Harvey's Legal Agent Benchmark (Vals AI) | 25.0% | 7.5% | Muse Spark Open |
| Excel Modeling Benchmark (Vals AI) | 53.7% | Not measured | Only Muse Spark Open measured |
| APEX-Agents | 33.4% | Not measured | Only Muse Spark Open measured |
| Neither model has a result on the other 33 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index02
| Benchmark | Muse Spark Open | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| LiveBench reasoning | 73.7% | 82.9% | MiniMax M3.1 Flash |
| GPQA Diamond (Artificial Analysis run) | 89.0% | Not measured | Only Muse Spark Open measured |
| Humanity's Last Exam (Artificial Analysis run) | 43.9% | 48.0% | MiniMax M3.1 Flash |
| Humanity's Last Exam (Scale run) | 28.0% | Not measured | Only Muse Spark Open measured |
| Neither model has a result on the other 19 boards here | |||
MathDirectional onlyPublic boards, shown as published, kept out of the index1 board, none shared
| Benchmark | Muse Spark Open | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| MathArena | 33.6% | Not measured | Only Muse Spark Open measured |
| Neither model has a result on the other 13 boards here | |||
KnowledgeDirectional onlyPublic boards, shown as published, kept out of the index1 board, none shared
| Benchmark | Muse Spark Open | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| PRBench Legal | 59.8% | Not measured | Only Muse Spark Open measured |
| Neither model has a result on the other 19 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Muse Spark Open | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| Design Arena: websites | 1317 | Not measured | Only Muse Spark Open measured |
| Design Arena: game dev | 1286 | Not measured | Only Muse Spark Open measured |
| LiveBench design | 60.3% | 74.0% | MiniMax M3.1 Flash |
| Neither model has a result on the other 6 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index03
| Benchmark | Muse Spark Open | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| Vals Index | 48.6% | 53.8% | MiniMax M3.1 Flash |
| LiveBench data analysis | 60.2% | 71.4% | MiniMax M3.1 Flash |
| Long context reasoning (AA-LCR) | 78.3% | 79.7% | MiniMax M3.1 Flash |
| MultiChallenge | 74.2% | Not measured | Only Muse Spark Open measured |
| Neither model has a result on the other 44 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Muse Spark Open | MiniMax M3.1 Flash | 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
MiniMax M3.1 Flash costs less
Repository review
50K input + 3K output tokens
MiniMax M3.1 Flash costs less
Agent loop
200K input + 10K output tokens
MiniMax M3.1 Flash 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 Open | MiniMax M3.1 Flash |
|---|---|---|
| Maker | Meta | MiniMax |
| Weights | Open weights | No public weights listed |
| Released | October 15, 2026 | October 19, 2026 |
| Context window | 1.05M | 1M |
| Input $/Mtok | $1.25 | $0.15 |
| Output $/Mtok | $4.25 | $0.60 |
| Coding index | 47.4 | 59.0 |
| Independent measurements behind it | 4 | 4 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Muse Spark Open better than MiniMax M3.1 Flash for coding?
Pick MiniMax M3.1 Flash for coding: it scores 59.0 on the Vibe Coding Index against 47.4 for Muse Spark Open. Pick Muse Spark Open for a larger context window (1.05M against 1M tokens) and work measured by Vibe Code Bench (Vals AI) or SciCode, where it leads.
Which is cheaper, Muse Spark Open or MiniMax M3.1 Flash?
Muse Spark Open costs $1.25 per million input tokens and $4.25 per million output tokens; MiniMax M3.1 Flash costs $0.15 and $0.60. Cost per solved task is known for neither of them.
Which has the bigger context window, Muse Spark Open or MiniMax M3.1 Flash?
Muse Spark Open, with 1.05M tokens against 1M.
How many benchmarks is the Muse Spark Open vs MiniMax M3.1 Flash comparison based on?
19 benchmarks have a result for both models as of October 22, 2026. Muse Spark Open's coding index rests on 4 independent benchmarks and MiniMax M3.1 Flash's on 4. Where only one model has a result, the page says so instead of naming a winner.