Gemini 4 Hydrogen vs MiMo-V2.6-Flash
Gemini 4 Hydrogen leads MiMo-V2.6-Flash on coding, 77.9 to 54.8 on the Vibe Coding Index, and MiMo-V2.6-Flash costs 26.8x less per output token ($0.28 vs $7.50 per million). Updated November 14, 2026; 38 benchmarks have a result for both.
Gemini 4 Hydrogen or MiMo-V2.6-Flash: which to pick
Pick Gemini 4 Hydrogen for coding: it scores 77.9 on the Vibe Coding Index against 54.8 for MiMo-V2.6-Flash.
Pick MiMo-V2.6-Flash for output tokens 26.8x cheaper ($0.28 vs $7.50 per million) and a larger context window (1.05M against 1.05M tokens).
- Shared results
- 38
- Gemini 4 Hydrogen only
- 12
- MiMo-V2.6-Flash only
- 38
- 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
Gemini 4 Hydrogen
Gemini 4 Hydrogen scores 77.9 against 54.8.
4 and 3 benchmarks behind the scores
Intelligence
AA Intelligence Index
No call
Only MiMo-V2.6-Flash has a AA Intelligence Index result, 26.7.
Directional only
Web design
Design Arena: websites
No call
Only Gemini 4 Hydrogen has a Design Arena: websites result, 1320.
Directional only
General
Vals Index
Gemini 4 Hydrogen
Gemini 4 Hydrogen leads, 68.5% against 54.8%.
Same board, both measured
Long documents
Listed context window
MiMo-V2.6-Flash
MiMo-V2.6-Flash takes 1.05M tokens against 1.05M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiMo-V2.6-Flash
Gemini 4 Hydrogen $0.0053, MiMo-V2.6-Flash $0.0003 per turn.
List prices
At a glance
- Coding index
- Gemini 4 Hydrogen 77.9 from 4 benchmarks, MiMo-V2.6-Flash 54.8 from 3 benchmarks.
- Widest category
- Reasoning, 21.0 points apart on average over 5 shared benchmarks.
- Widest single gap
- HLE-Diamond (Artificial Analysis run): Gemini 4 Hydrogen 58.8% against MiMo-V2.6-Flash 13.7%, 45.1 points apart on a 0 to 100 scale.
- Output price
- Gemini 4 Hydrogen $7.50 against MiMo-V2.6-Flash $0.28 per million output tokens, 26.8x apart.
- Context window
- Gemini 4 Hydrogen takes 1.05M 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 | Gemini 4 Hydrogen | Bars | MiMo-V2.6-Flash | Ties |
|---|---|---|---|---|
| Coding | 9 | 0 | ||
| Agentic work | 2 | 1 | ||
| Reasoning | 5 | 0 | ||
| Math | 2 | 0 | ||
| Knowledge | 5 | 0 | ||
| General | 14 | 0 | ||
| All shared boards | 37 | 1 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index90
| Benchmark | Gemini 4 Hydrogen | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| LiveBench coding | 78.5% | Not measured | Only Gemini 4 Hydrogen measured |
| LMArena WebDev | 1704 | 1638 | Gemini 4 Hydrogen |
| Terminal-Bench 4 (Vals AI) | 54.0% | 24.2% | Gemini 4 Hydrogen |
| Vibe Code Bench (Vals AI) | 87.8% | 79.0% | Gemini 4 Hydrogen |
| 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 | Not measured | 51.3% | Only MiMo-V2.6-Flash measured |
| Terminal-Bench 4.0 (Artificial Analysis run) | 54.0% | 22.7% | Gemini 4 Hydrogen |
| FrontierCode 2.0 | 39.0% | 21.6% | Gemini 4 Hydrogen |
| ALE-Bench | Not measured | 1244.2 | Only MiMo-V2.6-Flash measured |
| LMArena Text: coding | 1516 | 1497 | Gemini 4 Hydrogen |
| LMArena Text: software and IT | 1513 | 1493 | Gemini 4 Hydrogen |
| LMArena WebDev: React | 1724 | 1654 | Gemini 4 Hydrogen |
| LMArena WebDev: HTML | 1743 | 1637 | Gemini 4 Hydrogen |
| LMArena WebDev: from an image | Not measured | 1593 | Only MiMo-V2.6-Flash measured |
| GameBench 2 | Not measured | 59.0 | Only MiMo-V2.6-Flash measured |
| Terminal-Bench 4.0 | Not measured | 16.1% | Only MiMo-V2.6-Flash measured |
| CursorBench 4.0 | 57.8% | Not measured | Only Gemini 4 Hydrogen measured |
| Neither model has a result on the other 31 boards here | |||
IntelligenceDirectional onlyPublic boards, shown as published, kept out of the index1 board, none shared
| Benchmark | Gemini 4 Hydrogen | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| AA Intelligence Index | Not measured | 26.7 | Only MiMo-V2.6-Flash measured |
| Neither model has a result on the other 1 board here | |||
Agentic workLike-for-likePublic boards, shown as published, kept out of the index21
| Benchmark | Gemini 4 Hydrogen | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| LiveBench research | 86.8% | Not measured | Only Gemini 4 Hydrogen measured |
| LiveBench browser | 77.1% | Not measured | Only Gemini 4 Hydrogen measured |
| LiveBench long agentic | 61.8% | Not measured | Only Gemini 4 Hydrogen 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) | 52.3% | 28.5% | Gemini 4 Hydrogen |
| Legal Research Bench (Vals AI) | 53.8% | 38.0% | Gemini 4 Hydrogen |
| Harvey's Legal Agent Benchmark (Vals AI) | 11.3% | 13.3% | MiMo-V2.6-Flash |
| 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 32 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index50
| Benchmark | Gemini 4 Hydrogen | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| LiveBench reasoning | 88.6% | Not measured | Only Gemini 4 Hydrogen measured |
| MysteryMechanism (Vals AI) | Not measured | 21.6% | Only MiMo-V2.6-Flash measured |
| Humanity's Last Exam (Artificial Analysis run) | Not measured | 35.1% | Only MiMo-V2.6-Flash measured |
| HLE-Diamond (Artificial Analysis run) | 58.8% | 13.7% | Gemini 4 Hydrogen |
| CritPt v2, hard subset (Artificial Analysis run) | 66.0% | 29.5% | Gemini 4 Hydrogen |
| LMArena Text: hard prompts | 1520 | 1468 | Gemini 4 Hydrogen |
| LMArena Text: expert | 1558 | 1497 | Gemini 4 Hydrogen |
| LMArena Text: hard prompts in English | 1514 | 1488 | Gemini 4 Hydrogen |
| LMArena Vision: diagrams | Not measured | 1266 | Only MiMo-V2.6-Flash measured |
| LMArena Vision: homework | Not measured | 1288 | Only MiMo-V2.6-Flash measured |
| Neither model has a result on the other 16 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index20
| Benchmark | Gemini 4 Hydrogen | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| ProofBench | Not measured | 63.0% | Only MiMo-V2.6-Flash measured |
| LMArena Text: math | 1507 | 1467 | Gemini 4 Hydrogen |
| LMArena Text: mathematical work | 1534 | 1481 | Gemini 4 Hydrogen |
| Neither model has a result on the other 11 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index50
| Benchmark | Gemini 4 Hydrogen | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| MedCode (Vals AI) | Not measured | 41.1% | Only MiMo-V2.6-Flash measured |
| AA-Omniscience | 46.3 | -10.8 | Gemini 4 Hydrogen |
| LMArena Text: science | 1519 | 1455 | Gemini 4 Hydrogen |
| LMArena Text: medicine and healthcare | 1488 | 1445 | Gemini 4 Hydrogen |
| LMArena Text: legal and government | 1532 | 1451 | Gemini 4 Hydrogen |
| LMArena Text: business and finance | 1486 | 1451 | Gemini 4 Hydrogen |
| Neither model has a result on the other 15 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index5 boards, none shared
| Benchmark | Gemini 4 Hydrogen | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| Design Arena: websites | 1320 | Not measured | Only Gemini 4 Hydrogen measured |
| Design Arena: game dev | 1369 | Not measured | Only Gemini 4 Hydrogen measured |
| Design Arena: 3D | 1415 | Not measured | Only Gemini 4 Hydrogen measured |
| Design Arena: all code categories | 1333 | Not measured | Only Gemini 4 Hydrogen measured |
| LiveBench design | 77.3% | Not measured | Only Gemini 4 Hydrogen measured |
| Neither model has a result on the other 4 boards here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index140
| Benchmark | Gemini 4 Hydrogen | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| Vals Index | 68.5% | 54.8% | Gemini 4 Hydrogen |
| LiveBench data analysis | 83.2% | Not measured | Only Gemini 4 Hydrogen measured |
| Public Benefits Bench (Vals AI) | Not measured | 67.6% | Only MiMo-V2.6-Flash measured |
| SAGE (Vals AI) | Not measured | 83.3% | Only MiMo-V2.6-Flash measured |
| MedScribe (Vals AI) | Not measured | 85.3% | Only MiMo-V2.6-Flash measured |
| Long context reasoning (AA-LCR) | Not measured | 74.3% | Only MiMo-V2.6-Flash measured |
| GDPval-AA | Not measured | 1615 | Only MiMo-V2.6-Flash measured |
| LMArena Text | 1502 | 1451 | Gemini 4 Hydrogen |
| LMArena Text: instruction following | 1519 | 1445 | Gemini 4 Hydrogen |
| LMArena Text: creative writing | 1509 | 1402 | Gemini 4 Hydrogen |
| LMArena Vision | Not measured | 1260 | Only MiMo-V2.6-Flash measured |
| LMArena Text: English | 1499 | 1473 | Gemini 4 Hydrogen |
| LMArena Text: non-English | 1495 | 1430 | Gemini 4 Hydrogen |
| LMArena Text: Chinese | 1631 | 1516 | Gemini 4 Hydrogen |
| LMArena Text: German | Not measured | 1461 | Only MiMo-V2.6-Flash measured |
| LMArena Text: Japanese | Not measured | 1362 | Only MiMo-V2.6-Flash measured |
| LMArena Text: Korean | Not measured | 1411 | Only MiMo-V2.6-Flash measured |
| LMArena Text: French | 1512 | 1474 | Gemini 4 Hydrogen |
| LMArena Text: Spanish | 1494 | 1462 | Gemini 4 Hydrogen |
| LMArena Text: Russian | 1492 | 1415 | Gemini 4 Hydrogen |
| LMArena Text: Polish | Not measured | 1441 | Only MiMo-V2.6-Flash measured |
| LMArena Text: multi-turn | 1485 | 1443 | Gemini 4 Hydrogen |
| LMArena Text: longer queries | 1524 | 1455 | Gemini 4 Hydrogen |
| LMArena Text: writing and language | 1500 | 1418 | Gemini 4 Hydrogen |
| LMArena Text: entertainment and media | 1503 | 1414 | Gemini 4 Hydrogen |
| LMArena Vision: English | Not measured | 1274 | Only MiMo-V2.6-Flash measured |
| LMArena Vision: Chinese | Not measured | 1346 | Only MiMo-V2.6-Flash measured |
| LMArena Vision: reading text | Not measured | 1273 | Only MiMo-V2.6-Flash measured |
| LMArena Vision: humor | Not measured | 1236 | Only MiMo-V2.6-Flash measured |
| LMArena Vision: creative writing | Not measured | 1236 | 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 | Gemini 4 Hydrogen | 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 | Google Gemini 4 Hydrogen | Xiaomi MiMo-V2.6-Flash |
|---|---|---|
| Maker | Xiaomi | |
| Weights | No public weights listed | Open weights |
| Released | November 12, 2026 | September 21, 2026 |
| Context window | 1.05M | 1.05M |
| Input $/Mtok | $1.50 | $0.14 |
| Output $/Mtok | $7.50 | $0.28 |
| Coding index | 77.9 | 54.8 |
| Independent measurements behind it | 4 | 3 |
| Cost per solved task | Not computable | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Gemini 4 Hydrogen better than MiMo-V2.6-Flash for coding?
Pick Gemini 4 Hydrogen for coding: it scores 77.9 on the Vibe Coding Index against 54.8 for MiMo-V2.6-Flash. Pick MiMo-V2.6-Flash for output tokens 26.8x cheaper ($0.28 vs $7.50 per million) and a larger context window (1.05M against 1.05M tokens).
Which is cheaper, Gemini 4 Hydrogen or MiMo-V2.6-Flash?
Gemini 4 Hydrogen costs $1.50 per million input tokens and $7.50 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, Gemini 4 Hydrogen or MiMo-V2.6-Flash?
MiMo-V2.6-Flash, with 1.05M tokens against 1.05M.
How many benchmarks is the Gemini 4 Hydrogen vs MiMo-V2.6-Flash comparison based on?
38 benchmarks have a result for both models as of November 14, 2026. Gemini 4 Hydrogen's coding index rests on 4 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.