MiMo-V2.5 vs MiMo-V2.6-Flash
MiMo-V2.6-Flash leads MiMo-V2.5 on coding, 54.7 to 50.0 on the Vibe Coding Index, and MiMo-V2.6-Flash costs 1.2x less per output token ($0.28 vs $0.336 per million). Updated October 22, 2026; 53 benchmarks have a result for both.
MiMo-V2.5 or MiMo-V2.6-Flash: which to pick
Pick MiMo-V2.6-Flash for coding: it scores 54.7 on the Vibe Coding Index against 50.0 for MiMo-V2.5.
MiMo-V2.5 is neither cheaper nor larger in context, and leads no benchmark both models were measured on.
- Shared results
- 53
- MiMo-V2.5 only
- 27
- MiMo-V2.6-Flash only
- 13
- Like-for-like categories
- 7 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
MiMo-V2.6-Flash
MiMo-V2.6-Flash scores 54.7 against 50.0.
3 benchmarks behind each score
Intelligence
AA Intelligence Index
MiMo-V2.6-Flash
MiMo-V2.6-Flash leads, 37.9 against 21.8.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only MiMo-V2.5 has a AA Agentic Index result, 15.8.
Directional only
Reasoning
GPQA Diamond
No call
Only MiMo-V2.5 has a GPQA Diamond result, 81.6%.
Directional only
Knowledge
MMLU Pro
No call
Only MiMo-V2.5 has a MMLU Pro result, 82.9%.
Directional only
Web design
Design Arena: websites
No call
Only MiMo-V2.5 has a Design Arena: websites result, 1265.
Directional only
General
Vals Index
No call
Only MiMo-V2.6-Flash has a Vals Index result, 54.8%.
Directional only
Long documents
Listed context window
No call
Both take 1.05M tokens.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiMo-V2.6-Flash
MiMo-V2.5 $0.0003, MiMo-V2.6-Flash $0.0003 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only MiMo-V2.5 has the number, $0.01.
Directional only
At a glance
- Coding index
- MiMo-V2.5 50.0 from 3 benchmarks, MiMo-V2.6-Flash 54.7 from 3 benchmarks.
- Widest category
- Coding, 20.7 points apart on average over 10 shared benchmarks.
- Widest single gap
- ProofBench: MiMo-V2.5 16.0% against MiMo-V2.6-Flash 63.0%, 47.0 points apart on a 0 to 100 scale.
- Output price
- MiMo-V2.5 $0.336 against MiMo-V2.6-Flash $0.28 per million output tokens, 1.2x 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 | MiMo-V2.5 | Bars | MiMo-V2.6-Flash | Ties |
|---|---|---|---|---|
| Coding | 0 | 10 | ||
| Intelligence | 0 | 1 | ||
| Agentic work | 0 | 4 | ||
| Reasoning | 0 | 6 | ||
| Math | 0 | 3 | ||
| Knowledge | 0 | 5 | ||
| General | 0 | 24 | ||
| All shared boards | 0 | 53 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index010
| Benchmark | MiMo-V2.5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| LMArena WebDev | 1438 | 1634 | MiMo-V2.6-Flash |
| AA Coding Index | 56.8 | Not measured | Only MiMo-V2.5 measured |
| LiveCodeBench (Vals AI) | 81.5% | Not measured | Only MiMo-V2.5 measured |
| SWE-bench Verified (Vals AI) | 71.0% | Not measured | Only MiMo-V2.5 measured |
| Terminal-Bench 4 (Vals AI) | Not measured | 24.2% | Only MiMo-V2.6-Flash measured |
| Vibe Code Bench (Vals AI) | 42.2% | 79.0% | MiMo-V2.6-Flash |
| Code migration (Vals AI) | 14.2% | 40.9% | MiMo-V2.6-Flash |
| ProgramBench (Vals AI) | Not measured | 0.5% | Only MiMo-V2.6-Flash measured |
| IOI (Vals AI) | Not measured | 47.7% | Only MiMo-V2.6-Flash measured |
| Terminal-Bench 2.1 (Vals AI) | 60.7% | 76.4% | MiMo-V2.6-Flash |
| CyberBench (Vals AI) | Not measured | 75.4% | Only MiMo-V2.6-Flash measured |
| SciCode | 43.9% | 51.3% | MiMo-V2.6-Flash |
| Terminal-Bench Hard (Artificial Analysis run) | 41.7% | Not measured | Only MiMo-V2.5 measured |
| ALE-Bench | 514.0 | 1244.2 | MiMo-V2.6-Flash |
| LMArena Text: coding | 1469 | 1499 | MiMo-V2.6-Flash |
| LMArena Text: software and IT | 1463 | 1497 | MiMo-V2.6-Flash |
| LMArena WebDev: React | 1425 | 1648 | MiMo-V2.6-Flash |
| LMArena WebDev: HTML | 1429 | 1641 | MiMo-V2.6-Flash |
| LMArena WebDev: from an image | Not measured | 1596 | Only MiMo-V2.6-Flash measured |
| Neither model has a result on the other 20 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | MiMo-V2.5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| AA Intelligence Index | 21.8 | 37.9 | MiMo-V2.6-Flash |
| Neither model has a result on the other 1 board here | |||
Agentic workLike-for-likePublic boards, shown as published, kept out of the index04
| Benchmark | MiMo-V2.5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| AA Agentic Index | 15.8 | Not measured | Only MiMo-V2.5 measured |
| SREBench (Vals AI) | Not measured | 4.2% | Only MiMo-V2.6-Flash measured |
| Finance Agent (Vals AI) | 36.7% | 56.3% | MiMo-V2.6-Flash |
| Tax Agent Bench (Vals AI) | 7.8% | 28.5% | MiMo-V2.6-Flash |
| Legal Research Bench (Vals AI) | 9.1% | 38.0% | MiMo-V2.6-Flash |
| Harvey's Legal Agent Benchmark (Vals AI) | Not measured | 13.3% | Only MiMo-V2.6-Flash measured |
| Excel Modeling Benchmark (Vals AI) | 55.1% | 65.5% | MiMo-V2.6-Flash |
| BioMysteryBench (Vals AI) | Not measured | 69.3% | Only MiMo-V2.6-Flash measured |
| Terminal-Bench-Science (Vals AI) | Not measured | 4.3% | Only MiMo-V2.6-Flash measured |
| Vals Science Index | Not measured | 31.7% | Only MiMo-V2.6-Flash measured |
| τ²-Bench Telecom | 90.6% | Not measured | Only MiMo-V2.5 measured |
| Neither model has a result on the other 30 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index06
| Benchmark | MiMo-V2.5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| GPQA Diamond | 81.6% | Not measured | Only MiMo-V2.5 measured |
| MysteryMechanism (Vals AI) | Not measured | 21.6% | Only MiMo-V2.6-Flash measured |
| MMMU Pro (Vals AI) | 80.0% | Not measured | Only MiMo-V2.5 measured |
| GPQA Diamond (Artificial Analysis run) | 84.9% | Not measured | Only MiMo-V2.5 measured |
| Humanity's Last Exam (Artificial Analysis run) | 27.2% | 35.1% | MiMo-V2.6-Flash |
| LMArena Text: hard prompts | 1450 | 1475 | MiMo-V2.6-Flash |
| LMArena Text: expert | 1459 | 1496 | MiMo-V2.6-Flash |
| LMArena Text: hard prompts in English | 1461 | 1493 | MiMo-V2.6-Flash |
| LMArena Vision: diagrams | 1269 | 1276 | MiMo-V2.6-Flash |
| LMArena Vision: homework | 1262 | 1283 | MiMo-V2.6-Flash |
| Neither model has a result on the other 12 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index03
| Benchmark | MiMo-V2.5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| ProofBench | 16.0% | 63.0% | MiMo-V2.6-Flash |
| LMArena Text: math | 1436 | 1476 | MiMo-V2.6-Flash |
| LMArena Text: mathematical work | 1451 | 1478 | MiMo-V2.6-Flash |
| Neither model has a result on the other 10 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index05
| Benchmark | MiMo-V2.5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| MMLU Pro | 82.9% | Not measured | Only MiMo-V2.5 measured |
| LegalBench (Vals AI) | 78.9% | Not measured | Only MiMo-V2.5 measured |
| CorpFin (Vals AI) | 59.9% | Not measured | Only MiMo-V2.5 measured |
| TaxEval (Vals AI) | 71.8% | Not measured | Only MiMo-V2.5 measured |
| MortgageTax (Vals AI) | 59.3% | Not measured | Only MiMo-V2.5 measured |
| MedCode (Vals AI) | 31.9% | 41.1% | MiMo-V2.6-Flash |
| LMArena Text: science | 1440 | 1462 | MiMo-V2.6-Flash |
| LMArena Text: medicine and healthcare | 1432 | 1439 | MiMo-V2.6-Flash |
| LMArena Text: legal and government | 1425 | 1441 | MiMo-V2.6-Flash |
| LMArena Text: business and finance | 1432 | 1454 | MiMo-V2.6-Flash |
| Neither model has a result on the other 8 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
| Benchmark | MiMo-V2.5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| Design Arena: websites | 1265 | Not measured | Only MiMo-V2.5 measured |
| Design Arena: UI components | 1255 | Not measured | Only MiMo-V2.5 measured |
| Design Arena: game dev | 1249 | Not measured | Only MiMo-V2.5 measured |
| Design Arena: data viz | 1250 | Not measured | Only MiMo-V2.5 measured |
| Design Arena: 3D | 1215 | Not measured | Only MiMo-V2.5 measured |
| Design Arena: all code categories | 1260 | Not measured | Only MiMo-V2.5 measured |
| Design Arena: SVG | 1179 | Not measured | Only MiMo-V2.5 measured |
| Design Arena: ASCII art | 1140 | Not measured | Only MiMo-V2.5 measured |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index024
| Benchmark | MiMo-V2.5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| Vals Index | Not measured | 54.8% | Only MiMo-V2.6-Flash measured |
| Public Benefits Bench (Vals AI) | Not measured | 67.6% | Only MiMo-V2.6-Flash measured |
| SAGE (Vals AI) | 43.3% | 43.5% | MiMo-V2.6-Flash |
| MedScribe (Vals AI) | 72.2% | 85.3% | MiMo-V2.6-Flash |
| Vals Multimodal Index | 52.8% | Not measured | Only MiMo-V2.5 measured |
| IFBench | 67.1% | Not measured | Only MiMo-V2.5 measured |
| Long context reasoning (AA-LCR) | 73.0% | 74.3% | MiMo-V2.6-Flash |
| LMArena Text | 1428 | 1453 | MiMo-V2.6-Flash |
| LMArena Text: instruction following | 1435 | 1452 | MiMo-V2.6-Flash |
| LMArena Text: creative writing | 1393 | 1403 | MiMo-V2.6-Flash |
| LMArena Vision | 1247 | 1256 | MiMo-V2.6-Flash |
| LMArena Text: English | 1447 | 1476 | MiMo-V2.6-Flash |
| LMArena Text: non-English | 1405 | 1431 | MiMo-V2.6-Flash |
| LMArena Text: Chinese | 1469 | 1509 | MiMo-V2.6-Flash |
| LMArena Text: German | 1421 | 1458 | MiMo-V2.6-Flash |
| LMArena Text: Japanese | 1306 | 1359 | MiMo-V2.6-Flash |
| LMArena Text: Korean | 1361 | 1425 | MiMo-V2.6-Flash |
| LMArena Text: French | 1448 | 1480 | MiMo-V2.6-Flash |
| LMArena Text: Spanish | 1414 | 1453 | MiMo-V2.6-Flash |
| LMArena Text: Russian | 1396 | 1409 | MiMo-V2.6-Flash |
| LMArena Text: Polish | 1413 | 1455 | MiMo-V2.6-Flash |
| LMArena Text: multi-turn | 1445 | 1447 | MiMo-V2.6-Flash |
| LMArena Text: longer queries | 1445 | 1459 | MiMo-V2.6-Flash |
| LMArena Text: writing and language | 1409 | 1424 | MiMo-V2.6-Flash |
| LMArena Text: entertainment and media | 1399 | 1415 | MiMo-V2.6-Flash |
| LMArena Vision: English | 1259 | 1269 | MiMo-V2.6-Flash |
| LMArena Vision: Chinese | 1326 | Not measured | Only MiMo-V2.5 measured |
| LMArena Vision: reading text | 1256 | 1270 | MiMo-V2.6-Flash |
| LMArena Vision: humor | 1226 | Not measured | Only MiMo-V2.5 measured |
| LMArena Vision: recognizing things | 1189 | Not measured | Only MiMo-V2.5 measured |
| LMArena Vision: creative writing | 1230 | 1231 | MiMo-V2.6-Flash |
| Neither model has a result on the other 15 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | MiMo-V2.5 | MiMo-V2.6-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
MiMo-V2.6-Flash costs less
Repository review
50K input + 3K output tokens
MiMo-V2.6-Flash costs less
Agent loop
200K input + 10K output tokens
MiMo-V2.6-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 | Xiaomi MiMo-V2.5 | Xiaomi MiMo-V2.6-Flash |
|---|---|---|
| Maker | Xiaomi | Xiaomi |
| Weights | Open weights | Open weights |
| Released | April 22, 2026 | September 21, 2026 |
| Context window | 1.05M | 1.05M |
| Input $/Mtok | $0.168 | $0.14 |
| Output $/Mtok | $0.336 | $0.28 |
| Coding index | 50.0 | 54.7 |
| Independent measurements behind it | 3 | 3 |
| Cost per solved task | $0.01 | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is MiMo-V2.5 better than MiMo-V2.6-Flash for coding?
Pick MiMo-V2.6-Flash for coding: it scores 54.7 on the Vibe Coding Index against 50.0 for MiMo-V2.5. MiMo-V2.5 is neither cheaper nor larger in context, and leads no benchmark both models were measured on.
Which is cheaper, MiMo-V2.5 or MiMo-V2.6-Flash?
MiMo-V2.5 costs $0.168 per million input tokens and $0.336 per million output tokens; MiMo-V2.6-Flash costs $0.14 and $0.28. Cost per solved task is known for MiMo-V2.5 only.
Which has the bigger context window, MiMo-V2.5 or MiMo-V2.6-Flash?
Neither: both take 1.05M tokens.
How many benchmarks is the MiMo-V2.5 vs MiMo-V2.6-Flash comparison based on?
53 benchmarks have a result for both models as of October 22, 2026. MiMo-V2.5's coding index rests on 3 independent benchmarks and MiMo-V2.6-Flash's on 3. Where only one model has a result, the page says so instead of naming a winner.