Claude Sonnet 5 vs MiMo-V2.6-Pro
MiMo-V2.6-Pro leads Claude Sonnet 5 on coding, 65.4 to 57.7 on the Vibe Coding Index, and MiMo-V2.6-Pro costs 11.5x less per output token ($0.87 vs $10.00 per million). Updated October 22, 2026; 69 benchmarks have a result for both.
Claude Sonnet 5 or MiMo-V2.6-Pro: which to pick
Pick MiMo-V2.6-Pro for coding: it scores 65.4 on the Vibe Coding Index against 57.7 for Claude Sonnet 5, though on 4 benchmarks against 6.
Pick Claude Sonnet 5 for work measured by Code migration (Vals AI) or IOI (Vals AI), where it leads.
- Shared results
- 69
- Claude Sonnet 5 only
- 52
- MiMo-V2.6-Pro only
- 4
- Like-for-like categories
- 8 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-Pro
MiMo-V2.6-Pro scores 65.4 against 57.7.
6 and 4 benchmarks behind the scores
Intelligence
AA Intelligence Index
MiMo-V2.6-Pro
MiMo-V2.6-Pro leads, 46.3 against 38.2.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Claude Sonnet 5 has a AA Agentic Index result, 43.6.
Directional only
Reasoning
GPQA Diamond
No call
Only Claude Sonnet 5 has a GPQA Diamond result, 88.9%.
Directional only
Knowledge
MMLU Pro
No call
Only Claude Sonnet 5 has a MMLU Pro result, 87.5%.
Directional only
Web design
Design Arena: websites
MiMo-V2.6-Pro
MiMo-V2.6-Pro leads, 1308 against 1274.
Same board, both measured
General
Vals Index
No call
Only MiMo-V2.6-Pro has a Vals Index result, 57.8%.
Directional only
Long documents
Listed context window
MiMo-V2.6-Pro
MiMo-V2.6-Pro takes 1.05M tokens against 1M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiMo-V2.6-Pro
Claude Sonnet 5 $0.0070, MiMo-V2.6-Pro $0.0009 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Claude Sonnet 5 has the number, $1.87.
Directional only
At a glance
- Coding index
- Claude Sonnet 5 57.7 from 6 benchmarks, MiMo-V2.6-Pro 65.4 from 4 benchmarks.
- Widest category
- Coding, 8.3 points apart on average over 16 shared benchmarks.
- Widest single gap
- Terminal-Bench 4 (Vals AI): Claude Sonnet 5 10.6% against MiMo-V2.6-Pro 31.3%, 27.6 points apart on a 0 to 100 scale.
- Output price
- Claude Sonnet 5 $10.00 against MiMo-V2.6-Pro $0.87 per million output tokens, 11.5x apart.
- Context window
- Claude Sonnet 5 takes 1M tokens, MiMo-V2.6-Pro 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 | Claude Sonnet 5 | Bars | MiMo-V2.6-Pro | Ties |
|---|---|---|---|---|
| Coding | 4 | 12 | ||
| Intelligence | 0 | 1 | ||
| Agentic work | 4 | 7 | ||
| Reasoning | 3 | 4 | ||
| Math | 1 | 2 | ||
| Knowledge | 1 | 4 | ||
| Web design | 1 | 6 | ||
| General | 4 | 15 | ||
| All shared boards | 18 | 51 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index412
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| LiveBench coding | 74.7% | 81.5% | MiMo-V2.6-Pro |
| LMArena WebDev | 1540 | 1625 | MiMo-V2.6-Pro |
| AA Coding Index | 71.5 | Not measured | Only Claude Sonnet 5 measured |
| LiveCodeBench (Vals AI) | 82.4% | Not measured | Only Claude Sonnet 5 measured |
| SWE-bench Verified (Vals AI) | 79.6% | Not measured | Only Claude Sonnet 5 measured |
| Terminal-Bench 4 (Vals AI) | 10.6% | 31.3% | MiMo-V2.6-Pro |
| Vibe Code Bench (Vals AI) | 81.3% | 85.2% | MiMo-V2.6-Pro |
| Code migration (Vals AI) | 44.4% | 43.0% | Claude Sonnet 5 |
| ProgramBench (Vals AI) | 0.0% | 0.5% | MiMo-V2.6-Pro |
| IOI (Vals AI) | 45.0% | 39.3% | Claude Sonnet 5 |
| Terminal-Bench 2.1 (Vals AI) | 74.5% | 67.8% | Claude Sonnet 5 |
| SWE-bench Multimodal (Vals AI) | Not measured | 41.3% | Only MiMo-V2.6-Pro measured |
| Vibe Code Bench 1-100 (Vals AI) | 13.8% | Not measured | Only Claude Sonnet 5 measured |
| SkillsBench (Vals AI) | 46.5% | Not measured | Only Claude Sonnet 5 measured |
| CyberBench (Vals AI) | 70.3% | 72.9% | MiMo-V2.6-Pro |
| SciCode | 54.3% | 60.9% | MiMo-V2.6-Pro |
| FrontierCode | 42.7% | Not measured | Only Claude Sonnet 5 measured |
| GSO-Bench | 37.3% | Not measured | Only Claude Sonnet 5 measured |
| WeirdML | 68.8% | Not measured | Only Claude Sonnet 5 measured |
| ALE-Bench | 1463.1 | 1158.1 | Claude Sonnet 5 |
| LMArena Text: coding | 1483 | 1533 | MiMo-V2.6-Pro |
| LMArena Text: software and IT | 1474 | 1528 | MiMo-V2.6-Pro |
| LMArena WebDev: React | 1541 | 1639 | MiMo-V2.6-Pro |
| LMArena WebDev: HTML | 1527 | 1616 | MiMo-V2.6-Pro |
| LMArena WebDev: from an image | 1540 | 1598 | MiMo-V2.6-Pro |
| SciCode | 10.7% | Not measured | Only Claude Sonnet 5 measured |
| Neither model has a result on the other 13 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| AA Intelligence Index | 38.2 | 46.3 | MiMo-V2.6-Pro |
| Epoch Capabilities Index | 156.9 | Not measured | Only Claude Sonnet 5 measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index47
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| AA Agentic Index | 43.6 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: agents building web apps | 1245 | 1290 | MiMo-V2.6-Pro |
| Design Arena: agents building full-stack apps | 1249 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: agents building mobile apps | 1215 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: agents building Android apps | 1227 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: agents building Godot games | 1225 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: agents building games | 1227 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: HTML slides | 1168 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: PowerPoint slides | 1191 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: spreadsheets | 1035 | Not measured | Only Claude Sonnet 5 measured |
| LiveBench research | 82.8% | 76.7% | Claude Sonnet 5 |
| LiveBench browser | 72.0% | 88.0% | MiMo-V2.6-Pro |
| LiveBench long agentic | 39.0% | 47.5% | MiMo-V2.6-Pro |
| SREBench (Vals AI) | 0.4% | 3.0% | MiMo-V2.6-Pro |
| Finance Agent (Vals AI) | 53.9% | 57.3% | MiMo-V2.6-Pro |
| Tax Agent Bench (Vals AI) | 29.4% | 32.4% | MiMo-V2.6-Pro |
| Legal Research Bench (Vals AI) | 41.8% | 47.1% | MiMo-V2.6-Pro |
| Harvey's Legal Agent Benchmark (Vals AI) | Not measured | 13.8% | Only MiMo-V2.6-Pro measured |
| Excel Modeling Benchmark (Vals AI) | 66.3% | 62.9% | Claude Sonnet 5 |
| Terminal-Bench-Science (Vals AI) | 5.7% | 2.9% | Claude Sonnet 5 |
| APEX-Agents | 54.5% | 54.4% | Claude Sonnet 5 |
| Vending-Bench 2 | $6,378 | Not measured | Only Claude Sonnet 5 measured |
| Neither model has a result on the other 19 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index34
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| GPQA Diamond | 88.9% | Not measured | Only Claude Sonnet 5 measured |
| LiveBench reasoning | 88.7% | 79.6% | Claude Sonnet 5 |
| MysteryMechanism (Vals AI) | Not measured | 15.3% | Only MiMo-V2.6-Pro measured |
| MMMU Pro (Vals AI) | 83.0% | Not measured | Only Claude Sonnet 5 measured |
| GPQA Diamond (Artificial Analysis run) | 91.1% | Not measured | Only Claude Sonnet 5 measured |
| Humanity's Last Exam (Artificial Analysis run) | 41.3% | 49.4% | MiMo-V2.6-Pro |
| GPQA Diamond (Epoch AI run) | 90.5% | Not measured | Only Claude Sonnet 5 measured |
| SimpleBench | 60.6% | Not measured | Only Claude Sonnet 5 measured |
| Chess puzzles | 45.0% | Not measured | Only Claude Sonnet 5 measured |
| Mystery game puzzles | 35.0% | Not measured | Only Claude Sonnet 5 measured |
| LMArena Text: hard prompts | 1461 | 1511 | MiMo-V2.6-Pro |
| LMArena Text: expert | 1489 | 1541 | MiMo-V2.6-Pro |
| LMArena Text: hard prompts in English | 1464 | 1520 | MiMo-V2.6-Pro |
| LMArena Vision: diagrams | 1293 | 1281 | Claude Sonnet 5 |
| LMArena Vision: homework | 1311 | 1264 | Claude Sonnet 5 |
| Neither model has a result on the other 7 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index12
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| OTIS Mock AIME | 94.7% | Not measured | Only Claude Sonnet 5 measured |
| FrontierMath, tiers 1 to 3 | 65.6% | Not measured | Only Claude Sonnet 5 measured |
| FrontierMath, tier 4 | 29.3% | Not measured | Only Claude Sonnet 5 measured |
| ProofBench | 77.0% | 70.0% | Claude Sonnet 5 |
| LMArena Text: math | 1467 | 1500 | MiMo-V2.6-Pro |
| LMArena Text: mathematical work | 1481 | 1511 | MiMo-V2.6-Pro |
| Neither model has a result on the other 7 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index14
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| MMLU Pro | 87.5% | Not measured | Only Claude Sonnet 5 measured |
| LegalBench (Vals AI) | 83.9% | Not measured | Only Claude Sonnet 5 measured |
| CorpFin (Vals AI) | 67.0% | Not measured | Only Claude Sonnet 5 measured |
| TaxEval (Vals AI) | 75.6% | Not measured | Only Claude Sonnet 5 measured |
| MortgageTax (Vals AI) | 70.0% | Not measured | Only Claude Sonnet 5 measured |
| MedCode (Vals AI) | 47.5% | 45.0% | Claude Sonnet 5 |
| SimpleQA Verified | 33.7% | Not measured | Only Claude Sonnet 5 measured |
| LMArena Text: science | 1460 | 1506 | MiMo-V2.6-Pro |
| LMArena Text: medicine and healthcare | 1442 | 1497 | MiMo-V2.6-Pro |
| LMArena Text: legal and government | 1454 | 1485 | MiMo-V2.6-Pro |
| LMArena Text: business and finance | 1436 | 1468 | MiMo-V2.6-Pro |
| Neither model has a result on the other 7 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index16
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| Design Arena: websites | 1274 | 1308 | MiMo-V2.6-Pro |
| Design Arena: UI components | 1277 | 1340 | MiMo-V2.6-Pro |
| Design Arena: game dev | 1277 | 1314 | MiMo-V2.6-Pro |
| Design Arena: data viz | 1251 | 1336 | MiMo-V2.6-Pro |
| Design Arena: 3D | 1261 | 1330 | MiMo-V2.6-Pro |
| Design Arena: all code categories | 1275 | 1317 | MiMo-V2.6-Pro |
| Design Arena: SVG | 1192 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: ASCII art | 1207 | Not measured | Only Claude Sonnet 5 measured |
| LiveBench design | 82.0% | 78.5% | Claude Sonnet 5 |
GeneralLike-for-likePublic boards, shown as published, kept out of the index415
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| Vals Index | Not measured | 57.8% | Only MiMo-V2.6-Pro measured |
| LiveBench data analysis | 71.7% | 72.3% | MiMo-V2.6-Pro |
| Public Benefits Bench (Vals AI) | 66.0% | 68.9% | MiMo-V2.6-Pro |
| SAGE (Vals AI) | 48.9% | 45.0% | Claude Sonnet 5 |
| MedScribe (Vals AI) | 76.0% | 88.3% | MiMo-V2.6-Pro |
| Vals Multimodal Index | 68.8% | Not measured | Only Claude Sonnet 5 measured |
| Long context reasoning (AA-LCR) | 82.0% | 86.3% | MiMo-V2.6-Pro |
| DTBench | 92.5% | Not measured | Only Claude Sonnet 5 measured |
| LMCA | 50.0% | Not measured | Only Claude Sonnet 5 measured |
| Surface Evolver Bench | 60.0% | Not measured | Only Claude Sonnet 5 measured |
| LMArena Text | 1442 | 1491 | MiMo-V2.6-Pro |
| LMArena Text: instruction following | 1452 | 1491 | MiMo-V2.6-Pro |
| LMArena Text: creative writing | 1416 | 1466 | MiMo-V2.6-Pro |
| LMArena Vision | 1273 | 1263 | Claude Sonnet 5 |
| LMArena Text: English | 1450 | 1504 | MiMo-V2.6-Pro |
| LMArena Text: non-English | 1431 | 1474 | MiMo-V2.6-Pro |
| LMArena Text: Chinese | 1478 | 1529 | MiMo-V2.6-Pro |
| LMArena Text: German | 1442 | Not measured | Only Claude Sonnet 5 measured |
| LMArena Text: Japanese | 1422 | Not measured | Only Claude Sonnet 5 measured |
| LMArena Text: Korean | 1412 | Not measured | Only Claude Sonnet 5 measured |
| LMArena Text: French | 1463 | Not measured | Only Claude Sonnet 5 measured |
| LMArena Text: Spanish | 1438 | Not measured | Only Claude Sonnet 5 measured |
| LMArena Text: Russian | 1450 | 1479 | MiMo-V2.6-Pro |
| LMArena Text: Polish | 1425 | Not measured | Only Claude Sonnet 5 measured |
| LMArena Text: multi-turn | 1453 | 1466 | MiMo-V2.6-Pro |
| LMArena Text: longer queries | 1462 | 1501 | MiMo-V2.6-Pro |
| LMArena Text: writing and language | 1436 | 1470 | MiMo-V2.6-Pro |
| LMArena Text: entertainment and media | 1411 | 1465 | MiMo-V2.6-Pro |
| LMArena Vision: English | 1275 | 1268 | Claude Sonnet 5 |
| LMArena Vision: Chinese | 1331 | Not measured | Only Claude Sonnet 5 measured |
| LMArena Vision: reading text | 1288 | 1270 | Claude Sonnet 5 |
| LMArena Vision: humor | 1261 | Not measured | Only Claude Sonnet 5 measured |
| LMArena Vision: creative writing | 1246 | Not measured | Only Claude Sonnet 5 measured |
| LMArena Document | 1466 | Not measured | Only Claude Sonnet 5 measured |
| Neither model has a result on the other 12 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Pro | 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-Pro costs less
Repository review
50K input + 3K output tokens
MiMo-V2.6-Pro costs less
Agent loop
200K input + 10K output tokens
MiMo-V2.6-Pro 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 | Anthropic Claude Sonnet 5 | Xiaomi MiMo-V2.6-Pro |
|---|---|---|
| Maker | Anthropic | Xiaomi |
| Weights | No public weights listed | Open weights |
| Released | June 30, 2026 | September 21, 2026 |
| Context window | 1M | 1.05M |
| Input $/Mtok | $2.00 | $0.435 |
| Output $/Mtok | $10.00 | $0.87 |
| Coding index | 57.7 | 65.4 |
| Independent measurements behind it | 6 | 4 |
| Cost per solved task | $1.87 | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Sonnet 5 better than MiMo-V2.6-Pro for coding?
Pick MiMo-V2.6-Pro for coding: it scores 65.4 on the Vibe Coding Index against 57.7 for Claude Sonnet 5, though on 4 benchmarks against 6. Pick Claude Sonnet 5 for work measured by Code migration (Vals AI) or IOI (Vals AI), where it leads.
Which is cheaper, Claude Sonnet 5 or MiMo-V2.6-Pro?
Claude Sonnet 5 costs $2.00 per million input tokens and $10.00 per million output tokens; MiMo-V2.6-Pro costs $0.435 and $0.87. Cost per solved task is known for Claude Sonnet 5 only.
Which has the bigger context window, Claude Sonnet 5 or MiMo-V2.6-Pro?
MiMo-V2.6-Pro, with 1.05M tokens against 1M.
How many benchmarks is the Claude Sonnet 5 vs MiMo-V2.6-Pro comparison based on?
69 benchmarks have a result for both models as of October 22, 2026. Claude Sonnet 5's coding index rests on 6 independent benchmarks and MiMo-V2.6-Pro's on 4. Where only one model has a result, the page says so instead of naming a winner.