Solar Pro 4 vs MiMo-V2.6-Flash
MiMo-V2.6-Flash leads Solar Pro 4 on the Artificial Analysis Intelligence Index, 37.9 to 28.2, and MiMo-V2.6-Flash costs 2.1x less per output token ($0.28 vs $0.60 per million). Updated October 22, 2026; 36 benchmarks have a result for both.
Solar Pro 4 or MiMo-V2.6-Flash: which to pick
Only MiMo-V2.6-Flash has a coding score, 54.7 on the Vibe Coding Index; Solar Pro 4 has none, so the two cannot be ranked on coding.
Compare them on price, context and the boards below.
- Shared results
- 36
- Solar Pro 4 only
- 9
- MiMo-V2.6-Flash only
- 30
- 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
No call
Only MiMo-V2.6-Flash has a coding score, so no call is made.
One side not measured
Intelligence
AA Intelligence Index
MiMo-V2.6-Flash
MiMo-V2.6-Flash leads, 37.9 against 28.2.
Same board, both measured
Web design
Design Arena: websites
No call
Only Solar Pro 4 has a Design Arena: websites result, 1176.
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 524K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiMo-V2.6-Flash
Solar Pro 4 $0.0004, MiMo-V2.6-Flash $0.0003 per turn.
List prices
At a glance
- Coding index
- Solar Pro 4 not benchmarked, MiMo-V2.6-Flash 54.7 from 3 benchmarks.
- Widest category
- Coding, 25.1 points apart on average over 7 shared benchmarks.
- Widest single gap
- LMArena WebDev: React: Solar Pro 4 1363 against MiMo-V2.6-Flash 1648, 39.5 points apart on a 0 to 100 scale.
- Output price
- Solar Pro 4 $0.60 against MiMo-V2.6-Flash $0.28 per million output tokens, 2.1x apart.
- Context window
- Solar Pro 4 takes 524K 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 | Solar Pro 4 | Bars | MiMo-V2.6-Flash | Ties |
|---|---|---|---|---|
| Coding | 0 | 7 | ||
| Intelligence | 0 | 1 | ||
| Reasoning | 0 | 4 | ||
| Math | 0 | 2 | ||
| Knowledge | 0 | 4 | ||
| General | 0 | 18 | ||
| All shared boards | 0 | 36 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index07
| Benchmark | Solar Pro 4 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| LMArena WebDev | 1371 | 1634 | MiMo-V2.6-Flash |
| AA Coding Index | 52.7 | Not measured | Only Solar Pro 4 measured |
| Terminal-Bench 4 (Vals AI) | Not measured | 24.2% | Only MiMo-V2.6-Flash measured |
| Vibe Code Bench (Vals AI) | Not measured | 79.0% | Only MiMo-V2.6-Flash measured |
| Code migration (Vals AI) | Not measured | 40.9% | Only MiMo-V2.6-Flash measured |
| 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) | Not measured | 76.4% | Only MiMo-V2.6-Flash measured |
| CyberBench (Vals AI) | Not measured | 75.4% | Only MiMo-V2.6-Flash measured |
| SciCode | 48.0% | 51.3% | MiMo-V2.6-Flash |
| ALE-Bench | 179.3 | 1244.2 | MiMo-V2.6-Flash |
| LMArena Text: coding | 1438 | 1499 | MiMo-V2.6-Flash |
| LMArena Text: software and IT | 1431 | 1497 | MiMo-V2.6-Flash |
| LMArena WebDev: React | 1363 | 1648 | MiMo-V2.6-Flash |
| LMArena WebDev: HTML | 1371 | 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 23 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Solar Pro 4 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| AA Intelligence Index | 28.2 | 37.9 | MiMo-V2.6-Flash |
| Neither model has a result on the other 1 board here | |||
Agentic workDirectional onlyPublic boards, shown as published, kept out of the index10 boards, none shared
| Benchmark | Solar Pro 4 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| Design Arena: agents building web apps | 1105 | Not measured | Only Solar Pro 4 measured |
| SREBench (Vals AI) | Not measured | 4.2% | Only MiMo-V2.6-Flash measured |
| Finance Agent (Vals AI) | Not measured | 56.3% | Only MiMo-V2.6-Flash measured |
| Tax Agent Bench (Vals AI) | Not measured | 28.5% | Only MiMo-V2.6-Flash measured |
| Legal Research Bench (Vals AI) | Not measured | 38.0% | Only MiMo-V2.6-Flash measured |
| Harvey's Legal Agent Benchmark (Vals AI) | Not measured | 13.3% | Only MiMo-V2.6-Flash measured |
| Excel Modeling Benchmark (Vals AI) | Not measured | 65.5% | Only MiMo-V2.6-Flash measured |
| 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 |
| Neither model has a result on the other 31 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index04
| Benchmark | Solar Pro 4 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| MysteryMechanism (Vals AI) | Not measured | 21.6% | Only MiMo-V2.6-Flash measured |
| GPQA Diamond (Artificial Analysis run) | 89.1% | Not measured | Only Solar Pro 4 measured |
| Humanity's Last Exam (Artificial Analysis run) | 29.8% | 35.1% | MiMo-V2.6-Flash |
| LMArena Text: hard prompts | 1400 | 1475 | MiMo-V2.6-Flash |
| LMArena Text: expert | 1428 | 1496 | MiMo-V2.6-Flash |
| LMArena Text: hard prompts in English | 1427 | 1493 | 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 14 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index02
| Benchmark | Solar Pro 4 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| ProofBench | Not measured | 63.0% | Only MiMo-V2.6-Flash measured |
| LMArena Text: math | 1421 | 1476 | MiMo-V2.6-Flash |
| LMArena Text: mathematical work | 1427 | 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 index04
| Benchmark | Solar Pro 4 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| MedCode (Vals AI) | Not measured | 41.1% | Only MiMo-V2.6-Flash measured |
| LMArena Text: science | 1404 | 1462 | MiMo-V2.6-Flash |
| LMArena Text: medicine and healthcare | 1374 | 1439 | MiMo-V2.6-Flash |
| LMArena Text: legal and government | 1383 | 1441 | MiMo-V2.6-Flash |
| LMArena Text: business and finance | 1381 | 1454 | MiMo-V2.6-Flash |
| Neither model has a result on the other 13 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index6 boards, none shared
| Benchmark | Solar Pro 4 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| Design Arena: websites | 1176 | Not measured | Only Solar Pro 4 measured |
| Design Arena: UI components | 1147 | Not measured | Only Solar Pro 4 measured |
| Design Arena: game dev | 1169 | Not measured | Only Solar Pro 4 measured |
| Design Arena: data viz | 1177 | Not measured | Only Solar Pro 4 measured |
| Design Arena: 3D | 1178 | Not measured | Only Solar Pro 4 measured |
| Design Arena: all code categories | 1182 | Not measured | Only Solar Pro 4 measured |
| Neither model has a result on the other 3 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index018
| Benchmark | Solar Pro 4 | 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 |
| Long context reasoning (AA-LCR) | 70.7% | 74.3% | MiMo-V2.6-Flash |
| LMArena Text | 1388 | 1453 | MiMo-V2.6-Flash |
| LMArena Text: instruction following | 1375 | 1452 | MiMo-V2.6-Flash |
| LMArena Text: creative writing | 1317 | 1403 | MiMo-V2.6-Flash |
| LMArena Vision | Not measured | 1256 | Only MiMo-V2.6-Flash measured |
| LMArena Text: English | 1414 | 1476 | MiMo-V2.6-Flash |
| LMArena Text: non-English | 1363 | 1431 | MiMo-V2.6-Flash |
| LMArena Text: Chinese | 1422 | 1509 | MiMo-V2.6-Flash |
| LMArena Text: German | 1358 | 1458 | MiMo-V2.6-Flash |
| LMArena Text: Japanese | 1320 | 1359 | MiMo-V2.6-Flash |
| LMArena Text: Korean | 1383 | 1425 | MiMo-V2.6-Flash |
| LMArena Text: French | 1400 | 1480 | MiMo-V2.6-Flash |
| LMArena Text: Spanish | 1409 | 1453 | MiMo-V2.6-Flash |
| LMArena Text: Russian | 1357 | 1409 | MiMo-V2.6-Flash |
| LMArena Text: Polish | 1304 | 1455 | MiMo-V2.6-Flash |
| LMArena Text: multi-turn | 1385 | 1447 | MiMo-V2.6-Flash |
| LMArena Text: longer queries | 1382 | 1459 | MiMo-V2.6-Flash |
| LMArena Text: writing and language | 1344 | 1424 | MiMo-V2.6-Flash |
| LMArena Text: entertainment and media | 1332 | 1415 | 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 20 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Solar Pro 4 | 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 | Upstage Solar Pro 4 | Xiaomi MiMo-V2.6-Flash |
|---|---|---|
| Maker | Upstage | Xiaomi |
| Weights | No public weights listed | Open weights |
| Released | August 10, 2026 | September 21, 2026 |
| Context window | 524K | 1.05M |
| Input $/Mtok | $0.15 | $0.14 |
| Output $/Mtok | $0.60 | $0.28 |
| Coding index | Not benchmarked | 54.7 |
| Independent measurements behind it | 1 | 3 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Solar Pro 4 better than MiMo-V2.6-Flash for coding?
Only MiMo-V2.6-Flash has a coding score, 54.7 on the Vibe Coding Index; Solar Pro 4 has none, so the two cannot be ranked on coding. Compare them on price, context and the boards below.
Which is cheaper, Solar Pro 4 or MiMo-V2.6-Flash?
Solar Pro 4 costs $0.15 per million input tokens and $0.60 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, Solar Pro 4 or MiMo-V2.6-Flash?
MiMo-V2.6-Flash, with 1.05M tokens against 524K.
How many benchmarks is the Solar Pro 4 vs MiMo-V2.6-Flash comparison based on?
36 benchmarks have a result for both models as of October 22, 2026. Solar Pro 4's coding index rests on 1 independent benchmark and MiMo-V2.6-Flash's on 3. Where only one model has a result, the page says so instead of naming a winner.