Nemotron 3 Ultra vs MiMo-V2.6-Flash
MiMo-V2.6-Flash leads Nemotron 3 Ultra on coding, 54.7 to 30.0 on the Vibe Coding Index, and MiMo-V2.6-Flash costs 8.6x less per output token ($0.28 vs $2.40 per million). Updated October 23, 2026; 40 benchmarks have a result for both.
Nemotron 3 Ultra 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 30.0 for Nemotron 3 Ultra.
Pick Nemotron 3 Ultra for work measured by LMArena Text: science or LMArena Text: medicine and healthcare, where it leads.
- Shared results
- 40
- Nemotron 3 Ultra only
- 31
- MiMo-V2.6-Flash only
- 26
- 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 30.0.
3 benchmarks behind each score
Intelligence
AA Intelligence Index
MiMo-V2.6-Flash
MiMo-V2.6-Flash leads, 37.9 against 22.9.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Nemotron 3 Ultra has a AA Agentic Index result, 20.1.
Directional only
Reasoning
GPQA Diamond
No call
Only Nemotron 3 Ultra has a GPQA Diamond result, 86.1%.
Directional only
Knowledge
MMLU Pro
No call
Only Nemotron 3 Ultra has a MMLU Pro result, 85.8%.
Directional only
Web design
Design Arena: websites
No call
Only Nemotron 3 Ultra has a Design Arena: websites result, 1145.
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
MiMo-V2.6-Flash
MiMo-V2.6-Flash takes 1.05M tokens against 262K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiMo-V2.6-Flash
Nemotron 3 Ultra $0.0018, MiMo-V2.6-Flash $0.0003 per turn.
List prices
At a glance
- Coding index
- Nemotron 3 Ultra 30.0 from 3 benchmarks, MiMo-V2.6-Flash 54.7 from 3 benchmarks.
- Widest category
- Agentic work, 25.0 points apart on average over 3 shared benchmarks.
- Widest single gap
- Vibe Code Bench (Vals AI): Nemotron 3 Ultra 7.6% against MiMo-V2.6-Flash 79.0%, 71.3 points apart on a 0 to 100 scale.
- Output price
- Nemotron 3 Ultra $2.40 against MiMo-V2.6-Flash $0.28 per million output tokens, 8.6x apart.
- Context window
- Nemotron 3 Ultra takes 262K tokens, MiMo-V2.6-Flash 1.05M.
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 | Nemotron 3 Ultra | Bars | MiMo-V2.6-Flash | Ties |
|---|---|---|---|---|
| Coding | 0 | 7 | ||
| Intelligence | 0 | 1 | ||
| Agentic work | 0 | 3 | ||
| Reasoning | 0 | 4 | ||
| Math | 0 | 3 | ||
| Knowledge | 3 | 2 | ||
| General | 4 | 13 | ||
| All shared boards | 7 | 33 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index07
| Benchmark | Nemotron 3 Ultra | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| LMArena WebDev | Not measured | 1634 | Only MiMo-V2.6-Flash measured |
| AA Coding Index | 49.3 | Not measured | Only Nemotron 3 Ultra measured |
| LiveCodeBench (Vals AI) | 86.0% | Not measured | Only Nemotron 3 Ultra measured |
| SWE-bench Verified (Vals AI) | 69.0% | Not measured | Only Nemotron 3 Ultra measured |
| Terminal-Bench 4 (Vals AI) | Not measured | 24.2% | Only MiMo-V2.6-Flash measured |
| Vibe Code Bench (Vals AI) | 7.6% | 79.0% | MiMo-V2.6-Flash |
| Code migration (Vals AI) | 4.9% | 40.9% | MiMo-V2.6-Flash |
| ProgramBench (Vals AI) | 0.0% | 0.5% | MiMo-V2.6-Flash |
| IOI (Vals AI) | Not measured | 47.7% | Only MiMo-V2.6-Flash measured |
| Terminal-Bench 2.1 (Vals AI) | 50.9% | 76.4% | MiMo-V2.6-Flash |
| CyberBench (Vals AI) | Not measured | 75.4% | Only MiMo-V2.6-Flash measured |
| SciCode | 40.3% | 51.3% | MiMo-V2.6-Flash |
| Terminal-Bench Hard (Artificial Analysis run) | 36.4% | Not measured | Only Nemotron 3 Ultra measured |
| FrontierCode | 13.6% | Not measured | Only Nemotron 3 Ultra measured |
| WeirdML | 43.5% | Not measured | Only Nemotron 3 Ultra measured |
| ALE-Bench | Not measured | 1244.2 | Only MiMo-V2.6-Flash measured |
| LMArena Text: coding | 1467 | 1499 | MiMo-V2.6-Flash |
| LMArena Text: software and IT | 1468 | 1497 | MiMo-V2.6-Flash |
| LMArena WebDev: React | Not measured | 1649 | Only MiMo-V2.6-Flash measured |
| LMArena WebDev: HTML | Not measured | 1639 | Only MiMo-V2.6-Flash measured |
| LMArena WebDev: from an image | Not measured | 1596 | Only MiMo-V2.6-Flash measured |
| Neither model has a result on the other 22 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Nemotron 3 Ultra | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| AA Intelligence Index | 22.9 | 37.9 | MiMo-V2.6-Flash |
| Epoch Capabilities Index | 146.0 | Not measured | Only Nemotron 3 Ultra measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index03
| Benchmark | Nemotron 3 Ultra | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| AA Agentic Index | 20.1 | Not measured | Only Nemotron 3 Ultra measured |
| SREBench (Vals AI) | Not measured | 4.2% | Only MiMo-V2.6-Flash measured |
| Finance Agent (Vals AI) | 37.7% | 56.3% | MiMo-V2.6-Flash |
| Tax Agent Bench (Vals AI) | Not measured | 28.5% | Only MiMo-V2.6-Flash measured |
| Legal Research Bench (Vals AI) | 15.4% | 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) | 31.7% | 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 | 83.3% | Not measured | Only Nemotron 3 Ultra measured |
| APEX-Agents | 22.7% | Not measured | Only Nemotron 3 Ultra measured |
| MCP Atlas | 63.1% | Not measured | Only Nemotron 3 Ultra measured |
| Neither model has a result on the other 29 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index04
| Benchmark | Nemotron 3 Ultra | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| GPQA Diamond | 86.1% | Not measured | Only Nemotron 3 Ultra measured |
| MysteryMechanism (Vals AI) | Not measured | 21.6% | Only MiMo-V2.6-Flash measured |
| GPQA Diamond (Artificial Analysis run) | 86.7% | Not measured | Only Nemotron 3 Ultra measured |
| Humanity's Last Exam (Artificial Analysis run) | 28.4% | 35.1% | MiMo-V2.6-Flash |
| GPQA Diamond (Epoch AI run) | 85.4% | Not measured | Only Nemotron 3 Ultra measured |
| Mystery game puzzles | 20.0% | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text: hard prompts | 1452 | 1474 | MiMo-V2.6-Flash |
| LMArena Text: expert | 1472 | 1494 | MiMo-V2.6-Flash |
| LMArena Text: hard prompts in English | 1453 | 1492 | MiMo-V2.6-Flash |
| LMArena Vision: diagrams | Not measured | 1276 | Only MiMo-V2.6-Flash measured |
| LMArena Vision: homework | Not measured | 1283 | Only MiMo-V2.6-Flash measured |
| Neither model has a result on the other 12 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index03
| Benchmark | Nemotron 3 Ultra | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| OTIS Mock AIME | 86.7% | Not measured | Only Nemotron 3 Ultra measured |
| ProofBench | 2.0% | 63.0% | MiMo-V2.6-Flash |
| LMArena Text: math | 1457 | 1470 | MiMo-V2.6-Flash |
| LMArena Text: mathematical work | 1462 | 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 index32
| Benchmark | Nemotron 3 Ultra | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| MMLU Pro | 85.8% | Not measured | Only Nemotron 3 Ultra measured |
| LegalBench (Vals AI) | 82.1% | Not measured | Only Nemotron 3 Ultra measured |
| CorpFin (Vals AI) | 65.5% | Not measured | Only Nemotron 3 Ultra measured |
| TaxEval (Vals AI) | 73.1% | Not measured | Only Nemotron 3 Ultra measured |
| MedCode (Vals AI) | 38.6% | 41.1% | MiMo-V2.6-Flash |
| LMArena Text: science | 1465 | 1461 | Nemotron 3 Ultra |
| LMArena Text: medicine and healthcare | 1455 | 1443 | Nemotron 3 Ultra |
| LMArena Text: legal and government | 1453 | 1442 | Nemotron 3 Ultra |
| LMArena Text: business and finance | 1435 | 1451 | MiMo-V2.6-Flash |
| Neither model has a result on the other 11 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index8 boards, none shared
| Benchmark | Nemotron 3 Ultra | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| Design Arena: websites | 1145 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: UI components | 1135 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: game dev | 1138 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: data viz | 1142 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: 3D | 1132 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: all code categories | 1146 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: SVG | 1069 | Not measured | Only Nemotron 3 Ultra measured |
| Design Arena: ASCII art | 1100 | Not measured | Only Nemotron 3 Ultra measured |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index413
| Benchmark | Nemotron 3 Ultra | 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) | Not measured | 43.5% | Only MiMo-V2.6-Flash measured |
| MedScribe (Vals AI) | Not measured | 85.3% | Only MiMo-V2.6-Flash measured |
| IFBench | 81.4% | Not measured | Only Nemotron 3 Ultra measured |
| Long context reasoning (AA-LCR) | 79.3% | 74.3% | Nemotron 3 Ultra |
| DTBench | 90.1% | Not measured | Only Nemotron 3 Ultra measured |
| LMCA | 36.9% | Not measured | Only Nemotron 3 Ultra measured |
| LMArena Text | 1445 | 1452 | MiMo-V2.6-Flash |
| LMArena Text: instruction following | 1418 | 1449 | MiMo-V2.6-Flash |
| LMArena Text: creative writing | 1398 | 1404 | MiMo-V2.6-Flash |
| LMArena Vision | Not measured | 1256 | Only MiMo-V2.6-Flash measured |
| LMArena Text: English | 1454 | 1474 | MiMo-V2.6-Flash |
| LMArena Text: non-English | 1427 | 1431 | MiMo-V2.6-Flash |
| LMArena Text: Chinese | 1498 | 1507 | MiMo-V2.6-Flash |
| LMArena Text: German | 1474 | 1455 | Nemotron 3 Ultra |
| LMArena Text: Japanese | Not measured | 1355 | Only MiMo-V2.6-Flash measured |
| LMArena Text: Korean | 1385 | 1427 | MiMo-V2.6-Flash |
| LMArena Text: French | 1473 | 1478 | MiMo-V2.6-Flash |
| LMArena Text: Spanish | 1454 | 1452 | Nemotron 3 Ultra |
| LMArena Text: Russian | 1417 | 1412 | Nemotron 3 Ultra |
| LMArena Text: Polish | 1385 | 1446 | MiMo-V2.6-Flash |
| LMArena Text: multi-turn | 1411 | 1444 | MiMo-V2.6-Flash |
| LMArena Text: longer queries | 1437 | 1459 | MiMo-V2.6-Flash |
| LMArena Text: writing and language | 1405 | 1425 | MiMo-V2.6-Flash |
| LMArena Text: entertainment and media | 1397 | 1412 | MiMo-V2.6-Flash |
| LMArena Vision: English | Not measured | 1269 | Only MiMo-V2.6-Flash measured |
| LMArena Vision: reading text | Not measured | 1270 | Only MiMo-V2.6-Flash measured |
| LMArena Vision: creative writing | Not measured | 1231 | Only MiMo-V2.6-Flash measured |
| Neither model has a result on the other 19 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Nemotron 3 Ultra | 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 | NVIDIA Nemotron 3 Ultra | Xiaomi MiMo-V2.6-Flash |
|---|---|---|
| Maker | NVIDIA | Xiaomi |
| Weights | Open weights | Open weights |
| Released | June 4, 2026 | September 21, 2026 |
| Context window | 262K | 1.05M |
| Input $/Mtok | $0.60 | $0.14 |
| Output $/Mtok | $2.40 | $0.28 |
| Coding index | 30.0 | 54.7 |
| Independent measurements behind it | 3 | 3 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Nemotron 3 Ultra 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 30.0 for Nemotron 3 Ultra. Pick Nemotron 3 Ultra for work measured by LMArena Text: science or LMArena Text: medicine and healthcare, where it leads.
Which is cheaper, Nemotron 3 Ultra or MiMo-V2.6-Flash?
Nemotron 3 Ultra costs $0.60 per million input tokens and $2.40 per million output tokens; MiMo-V2.6-Flash costs $0.14 and $0.28. Cost per solved task is known for neither of them.
Which has the bigger context window, Nemotron 3 Ultra or MiMo-V2.6-Flash?
MiMo-V2.6-Flash, with 1.05M tokens against 262K.
How many benchmarks is the Nemotron 3 Ultra vs MiMo-V2.6-Flash comparison based on?
40 benchmarks have a result for both models as of October 23, 2026. Nemotron 3 Ultra'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.