Claude Sonnet 5 vs MiMo-V2.6-Flash
Updated October 21, 2026. 61 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.
Decision reading
Claude Sonnet 5 and MiMo-V2.6-Flash are level for coding, 63.5 against 61.9 on the Vibe Coding Index, so price and context decide.
Pick MiMo-V2.6-Flash when output tokens cost 35.7x less, or when the context window is larger, 1.05M against 1M tokens. Pick Claude Sonnet 5 when what matters is Vibe Code Bench (Vals AI) or Code migration (Vals AI), where it leads.
- Shared results
- 61
- Claude Sonnet 5 only
- 59
- MiMo-V2.6-Flash only
- 5
- Like-for-like categories
- 7 of 9
Shared results can support a head-to-head reading. Results only one model has describe coverage, not superiority.
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, four public coding benchmarks
No call
Level: 63.5 against 61.9, inside 2 points.
2 and 1 benchmarks behind the scores
Intelligence
AA Intelligence Index
Claude Sonnet 5
Claude Sonnet 5 leads, 38.2 against 37.9.
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
No call
Only Claude Sonnet 5 has a Design Arena: websites result, 1274.
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 1M.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiMo-V2.6-Flash
Claude Sonnet 5 $0.0070, MiMo-V2.6-Flash $0.0003 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 63.5 from 2 benchmarks, MiMo-V2.6-Flash 61.9 from 1 benchmark.
- Widest category
- Coding, 6.1 points apart on average over 15 shared benchmarks.
- Widest single gap
- ProofBench: Claude Sonnet 5 77.0% against MiMo-V2.6-Flash 63.0%, 14.0 points apart on a 0 to 100 scale.
- Output price
- Claude Sonnet 5 $10.00 against MiMo-V2.6-Flash $0.28 per million output tokens, 35.7x apart.
- Context window
- Claude Sonnet 5 takes 1M 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 | Claude Sonnet 5 | Bars | MiMo-V2.6-Flash | Ties |
|---|---|---|---|---|
| Coding | 4 | 11 | ||
| Intelligence | 1 | 0 | ||
| Agentic work | 4 | 2 | ||
| Reasoning | 3 | 3 | ||
| Math | 2 | 1 | ||
| Knowledge | 3 | 2 | ||
| General | 13 | 12 | ||
| All shared boards | 30 | 31 |
CodingLike-for-likeFour of these boards feed the Vibe Coding Index411
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| LiveBench coding | 74.7% | Not measured | Only Claude Sonnet 5 measured |
| LMArena WebDev | 1540 | 1634 | MiMo-V2.6-Flash |
| 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% | 24.2% | MiMo-V2.6-Flash |
| Vibe Code Bench (Vals AI) | 81.3% | 79.0% | Claude Sonnet 5 |
| Code migration (Vals AI) | 44.4% | 40.9% | Claude Sonnet 5 |
| ProgramBench (Vals AI) | 0.0% | 0.5% | MiMo-V2.6-Flash |
| IOI (Vals AI) | 45.0% | 47.7% | MiMo-V2.6-Flash |
| Terminal-Bench 2.1 (Vals AI) | 74.5% | 76.4% | MiMo-V2.6-Flash |
| 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% | 75.4% | MiMo-V2.6-Flash |
| SciCode | 54.3% | 51.3% | Claude Sonnet 5 |
| 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 | 1244.2 | Claude Sonnet 5 |
| LMArena Text: coding | 1483 | 1499 | MiMo-V2.6-Flash |
| LMArena Text: software and IT | 1474 | 1497 | MiMo-V2.6-Flash |
| LMArena WebDev: React | 1541 | 1648 | MiMo-V2.6-Flash |
| LMArena WebDev: HTML | 1527 | 1641 | MiMo-V2.6-Flash |
| LMArena WebDev: from an image | 1540 | 1596 | MiMo-V2.6-Flash |
| Neither model has a result on the other 14 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| AA Intelligence Index | 38.2 | 37.9 | Claude Sonnet 5 |
| Epoch Capabilities Index | 156.9 | Not measured | Only Claude Sonnet 5 measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index42
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| AA Agentic Index | 43.6 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: agents building web apps | 1245 | Not measured | Only Claude Sonnet 5 measured |
| 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 | 1231 | 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 | 1218 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: PowerPoint slides | 1216 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: spreadsheets | 1004 | Not measured | Only Claude Sonnet 5 measured |
| LiveBench research | 82.8% | Not measured | Only Claude Sonnet 5 measured |
| LiveBench browser | 72.0% | Not measured | Only Claude Sonnet 5 measured |
| LiveBench long agentic | 39.0% | Not measured | Only Claude Sonnet 5 measured |
| SREBench (Vals AI) | 0.4% | 4.2% | MiMo-V2.6-Flash |
| Finance Agent (Vals AI) | 53.9% | 56.3% | MiMo-V2.6-Flash |
| Tax Agent Bench (Vals AI) | 29.4% | 28.5% | Claude Sonnet 5 |
| Legal Research Bench (Vals AI) | 41.8% | 38.0% | Claude Sonnet 5 |
| Harvey's Legal Agent Benchmark (Vals AI) | Not measured | 13.3% | Only MiMo-V2.6-Flash measured |
| Excel Modeling Benchmark (Vals AI) | 66.3% | 65.5% | Claude Sonnet 5 |
| BioMysteryBench (Vals AI) | Not measured | 69.3% | Only MiMo-V2.6-Flash measured |
| Terminal-Bench-Science (Vals AI) | 5.7% | 4.3% | Claude Sonnet 5 |
| Vals Science Index | Not measured | 31.7% | Only MiMo-V2.6-Flash measured |
| APEX-Agents | 54.5% | Not measured | Only Claude Sonnet 5 measured |
| Vending-Bench 2 | $6,378 | Not measured | Only Claude Sonnet 5 measured |
| Neither model has a result on the other 15 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index33
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| GPQA Diamond | 88.9% | Not measured | Only Claude Sonnet 5 measured |
| LiveBench reasoning | 88.7% | Not measured | Only Claude Sonnet 5 measured |
| MysteryMechanism (Vals AI) | Not measured | 21.6% | Only MiMo-V2.6-Flash 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% | 35.1% | Claude Sonnet 5 |
| 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 | 1475 | MiMo-V2.6-Flash |
| LMArena Text: expert | 1489 | 1496 | MiMo-V2.6-Flash |
| LMArena Text: hard prompts in English | 1464 | 1493 | MiMo-V2.6-Flash |
| LMArena Vision: diagrams | 1293 | 1276 | Claude Sonnet 5 |
| LMArena Vision: homework | 1311 | 1283 | Claude Sonnet 5 |
| Neither model has a result on the other 6 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index21
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Flash | 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% | 63.0% | Claude Sonnet 5 |
| LMArena Text: math | 1467 | 1476 | MiMo-V2.6-Flash |
| LMArena Text: mathematical work | 1481 | 1478 | Claude Sonnet 5 |
| Neither model has a result on the other 7 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index32
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Flash | 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% | 41.1% | Claude Sonnet 5 |
| SimpleQA Verified | 33.7% | Not measured | Only Claude Sonnet 5 measured |
| LMArena Text: science | 1460 | 1462 | MiMo-V2.6-Flash |
| LMArena Text: medicine and healthcare | 1442 | 1439 | Claude Sonnet 5 |
| LMArena Text: legal and government | 1454 | 1441 | Claude Sonnet 5 |
| LMArena Text: business and finance | 1436 | 1454 | MiMo-V2.6-Flash |
| Neither model has a result on the other 6 boards here | |||
Web designDirectional onlyPublic boards, shown as published, kept out of the index9 boards, none shared
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| Design Arena: websites | 1274 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: UI components | 1279 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: game dev | 1278 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: data viz | 1251 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: 3D | 1261 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: all code categories | 1276 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: SVG | 1193 | Not measured | Only Claude Sonnet 5 measured |
| Design Arena: ASCII art | 1207 | Not measured | Only Claude Sonnet 5 measured |
| LiveBench design | 82.0% | Not measured | Only Claude Sonnet 5 measured |
GeneralLike-for-likePublic boards, shown as published, kept out of the index1312
| Benchmark | Claude Sonnet 5 | MiMo-V2.6-Flash | Leader |
|---|---|---|---|
| Vals Index | Not measured | 54.8% | Only MiMo-V2.6-Flash measured |
| LiveBench data analysis | 71.7% | Not measured | Only Claude Sonnet 5 measured |
| Public Benefits Bench (Vals AI) | 66.0% | 67.6% | MiMo-V2.6-Flash |
| SAGE (Vals AI) | 48.9% | 43.5% | Claude Sonnet 5 |
| MedScribe (Vals AI) | 76.0% | 85.3% | MiMo-V2.6-Flash |
| Vals Multimodal Index | 68.8% | Not measured | Only Claude Sonnet 5 measured |
| Long context reasoning (AA-LCR) | 82.0% | 74.3% | Claude Sonnet 5 |
| 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 | 1453 | MiMo-V2.6-Flash |
| LMArena Text: instruction following | 1452 | 1452 | Claude Sonnet 5 |
| LMArena Text: creative writing | 1416 | 1403 | Claude Sonnet 5 |
| LMArena Vision | 1273 | 1256 | Claude Sonnet 5 |
| LMArena Text: English | 1450 | 1476 | MiMo-V2.6-Flash |
| LMArena Text: non-English | 1431 | 1431 | MiMo-V2.6-Flash |
| LMArena Text: Chinese | 1478 | 1509 | MiMo-V2.6-Flash |
| LMArena Text: German | 1442 | 1458 | MiMo-V2.6-Flash |
| LMArena Text: Japanese | 1422 | 1359 | Claude Sonnet 5 |
| LMArena Text: Korean | 1412 | 1425 | MiMo-V2.6-Flash |
| LMArena Text: French | 1463 | 1480 | MiMo-V2.6-Flash |
| LMArena Text: Spanish | 1438 | 1453 | MiMo-V2.6-Flash |
| LMArena Text: Russian | 1450 | 1409 | Claude Sonnet 5 |
| LMArena Text: Polish | 1425 | 1455 | MiMo-V2.6-Flash |
| LMArena Text: multi-turn | 1453 | 1447 | Claude Sonnet 5 |
| LMArena Text: longer queries | 1462 | 1459 | Claude Sonnet 5 |
| LMArena Text: writing and language | 1436 | 1424 | Claude Sonnet 5 |
| LMArena Text: entertainment and media | 1411 | 1415 | MiMo-V2.6-Flash |
| LMArena Vision: English | 1275 | 1269 | 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 | 1231 | Claude Sonnet 5 |
| 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-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 | Anthropic Claude Sonnet 5 | Xiaomi MiMo-V2.6-Flash |
|---|---|---|
| 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 | $0.14 |
| Output $/Mtok | $10.00 | $0.28 |
| Coding index | 63.5 | 61.9 |
| Independent measurements behind it | 2 | 1 |
| Cost per solved task | $1.87 | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Sonnet 5 better than MiMo-V2.6-Flash for coding?
Claude Sonnet 5 and MiMo-V2.6-Flash are level for coding, 63.5 against 61.9 on the Vibe Coding Index, so price and context decide. Pick MiMo-V2.6-Flash when output tokens cost 35.7x less, or when the context window is larger, 1.05M against 1M tokens. Pick Claude Sonnet 5 when what matters is Vibe Code Bench (Vals AI) or Code migration (Vals AI), where it leads.
Which is cheaper, Claude Sonnet 5 or MiMo-V2.6-Flash?
Claude Sonnet 5 costs $2.00 per million input tokens and $10.00 per million output tokens; MiMo-V2.6-Flash costs $0.14 and $0.28. Cost per solved task is known for Claude Sonnet 5 only.
Which has the bigger context window, Claude Sonnet 5 or MiMo-V2.6-Flash?
MiMo-V2.6-Flash, with 1.05M tokens against 1M.
How many benchmarks is the Claude Sonnet 5 vs MiMo-V2.6-Flash comparison based on?
61 benchmarks have a result for both models as of October 21, 2026. Claude Sonnet 5's coding index rests on 2 independent benchmarks and MiMo-V2.6-Flash's on 1. Where only one model has a result, the page says so instead of naming a winner.