Kimi K3.1 Pro vs MiniMax M3.1 Flash
Kimi K3.1 Pro leads MiniMax M3.1 Flash on coding, 82.2 to 58.9 on the Vibe Coding Index, and MiniMax M3.1 Flash costs 16.7x less per output token ($0.60 vs $10.00 per million). Updated October 29, 2026; 21 benchmarks have a result for both.
Kimi K3.1 Pro or MiniMax M3.1 Flash: which to pick
Pick Kimi K3.1 Pro for coding: it scores 82.2 on the Vibe Coding Index against 58.9 for MiniMax M3.1 Flash.
Pick MiniMax M3.1 Flash for output tokens 16.7x cheaper ($0.60 vs $10.00 per million) and work measured by LiveBench coding or LiveBench browser, where it leads.
- Shared results
- 21
- Kimi K3.1 Pro only
- 14
- MiniMax M3.1 Flash only
- 1
- Like-for-like categories
- 6 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
Kimi K3.1 Pro
Kimi K3.1 Pro scores 82.2 against 58.9.
4 benchmarks behind each score
Intelligence
AA Intelligence Index
Kimi K3.1 Pro
Kimi K3.1 Pro leads, 46.0 against 28.9.
Same board, both measured
Web design
Design Arena: websites
No call
Only Kimi K3.1 Pro has a Design Arena: websites result, 1325.
Directional only
General
Vals Index
Kimi K3.1 Pro
Kimi K3.1 Pro leads, 62.5% against 53.8%.
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
MiniMax M3.1 Flash
Kimi K3.1 Pro $0.0070, MiniMax M3.1 Flash $0.0004 per turn.
List prices
At a glance
- Coding index
- Kimi K3.1 Pro 82.2 from 4 benchmarks, MiniMax M3.1 Flash 58.9 from 4 benchmarks.
- Widest category
- Coding, 19.4 points apart on average over 8 shared benchmarks.
- Widest single gap
- ALE-Bench: Kimi K3.1 Pro 1932.8 against MiniMax M3.1 Flash 217.8, 57.2 points apart on a 0 to 100 scale.
- Output price
- Kimi K3.1 Pro $10.00 against MiniMax M3.1 Flash $0.60 per million output tokens, 16.7x 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 | Kimi K3.1 Pro | Bars | MiniMax M3.1 Flash | Ties |
|---|---|---|---|---|
| Coding | 7 | 1 | ||
| Intelligence | 1 | 0 | ||
| Agentic work | 4 | 2 | ||
| Reasoning | 2 | 0 | ||
| Web design | 1 | 0 | ||
| General | 3 | 0 | ||
| All shared boards | 18 | 3 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index71
| Benchmark | Kimi K3.1 Pro | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| LiveBench coding | 81.8% | 83.9% | MiniMax M3.1 Flash |
| LMArena WebDev | 1695 | 1582 | Kimi K3.1 Pro |
| Terminal-Bench 4 (Vals AI) | 63.6% | 25.3% | Kimi K3.1 Pro |
| Vibe Code Bench (Vals AI) | 84.9% | 73.9% | Kimi K3.1 Pro |
| IOI (Vals AI) | 81.9% | Not measured | Only Kimi K3.1 Pro measured |
| SciCode | 60.8% | 53.4% | Kimi K3.1 Pro |
| ALE-Bench | 1932.8 | 217.8 | Kimi K3.1 Pro |
| LMArena WebDev: React | 1701 | 1607 | Kimi K3.1 Pro |
| LMArena WebDev: HTML | 1706 | 1539 | Kimi K3.1 Pro |
| Neither model has a result on the other 34 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Kimi K3.1 Pro | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| AA Intelligence Index | 46.0 | 28.9 | Kimi K3.1 Pro |
| Neither model has a result on the other 1 board here | |||
Agentic workLike-for-likePublic boards, shown as published, kept out of the index42
| Benchmark | Kimi K3.1 Pro | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| LiveBench research | 77.9% | 72.7% | Kimi K3.1 Pro |
| LiveBench browser | 75.9% | 80.6% | MiniMax M3.1 Flash |
| LiveBench long agentic | 39.1% | 28.8% | Kimi K3.1 Pro |
| Tax Agent Bench (Vals AI) | 24.9% | 32.1% | MiniMax M3.1 Flash |
| Legal Research Bench (Vals AI) | 37.5% | 34.1% | Kimi K3.1 Pro |
| Harvey's Legal Agent Benchmark (Vals AI) | 11.7% | 7.5% | Kimi K3.1 Pro |
| BioMysteryBench (Vals AI) | 75.6% | Not measured | Only Kimi K3.1 Pro measured |
| Terminal-Bench-Science (Vals AI) | 31.4% | Not measured | Only Kimi K3.1 Pro measured |
| Vals Science Index | 44.4% | Not measured | Only Kimi K3.1 Pro measured |
| Neither model has a result on the other 33 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Kimi K3.1 Pro | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| LiveBench reasoning | 91.1% | 82.9% | Kimi K3.1 Pro |
| MysteryMechanism (Vals AI) | 26.1% | Not measured | Only Kimi K3.1 Pro measured |
| Humanity's Last Exam (Artificial Analysis run) | 52.5% | 48.0% | Kimi K3.1 Pro |
| Neither model has a result on the other 20 boards here | |||
MathDirectional onlyPublic boards, shown as published, kept out of the index2 boards, none shared
| Benchmark | Kimi K3.1 Pro | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| ProofBench | 91.0% | Not measured | Only Kimi K3.1 Pro measured |
| MathArena | 59.6% | Not measured | Only Kimi K3.1 Pro measured |
| Neither model has a result on the other 12 boards here | |||
KnowledgeNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Kimi K3.1 Pro | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| Neither model has a result on 20 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Kimi K3.1 Pro | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| Design Arena: websites | 1325 | Not measured | Only Kimi K3.1 Pro measured |
| Design Arena: UI components | 1400 | Not measured | Only Kimi K3.1 Pro measured |
| Design Arena: game dev | 1410 | Not measured | Only Kimi K3.1 Pro measured |
| Design Arena: data viz | 1300 | Not measured | Only Kimi K3.1 Pro measured |
| Design Arena: 3D | 1451 | Not measured | Only Kimi K3.1 Pro measured |
| Design Arena: all code categories | 1354 | Not measured | Only Kimi K3.1 Pro measured |
| Design Arena: SVG | 1328 | Not measured | Only Kimi K3.1 Pro measured |
| LiveBench design | 77.8% | 74.0% | Kimi K3.1 Pro |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index30
| Benchmark | Kimi K3.1 Pro | MiniMax M3.1 Flash | Leader |
|---|---|---|---|
| Vals Index | 62.5% | 53.8% | Kimi K3.1 Pro |
| LiveBench data analysis | 79.1% | 71.4% | Kimi K3.1 Pro |
| SAGE (Vals AI) | Not measured | 85.3% | Only MiniMax M3.1 Flash measured |
| Long context reasoning (AA-LCR) | 86.3% | 79.7% | Kimi K3.1 Pro |
| 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 | Kimi K3.1 Pro | 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 | MoonshotAI Kimi K3.1 Pro | MiniMax M3.1 Flash |
|---|---|---|
| Maker | Moonshot AI | MiniMax |
| Weights | No public weights listed | Open weights |
| Released | October 23, 2026 | October 19, 2026 |
| Context window | 1.05M | 1.05M |
| Input $/Mtok | $2.00 | $0.15 |
| Output $/Mtok | $10.00 | $0.60 |
| Coding index | 82.2 | 58.9 |
| Independent measurements behind it | 4 | 4 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Kimi K3.1 Pro better than MiniMax M3.1 Flash for coding?
Pick Kimi K3.1 Pro for coding: it scores 82.2 on the Vibe Coding Index against 58.9 for MiniMax M3.1 Flash. Pick MiniMax M3.1 Flash for output tokens 16.7x cheaper ($0.60 vs $10.00 per million) and work measured by LiveBench coding or LiveBench browser, where it leads.
Which is cheaper, Kimi K3.1 Pro or MiniMax M3.1 Flash?
Kimi K3.1 Pro costs $2.00 per million input tokens and $10.00 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, Kimi K3.1 Pro or MiniMax M3.1 Flash?
Neither: both take 1.05M tokens.
How many benchmarks is the Kimi K3.1 Pro vs MiniMax M3.1 Flash comparison based on?
21 benchmarks have a result for both models as of October 29, 2026. Kimi K3.1 Pro'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.