Claude Opus 4.8 vs MiMo-V2.6-Pro
MiMo-V2.6-Pro leads Claude Opus 4.8 on coding, 65.4 to 65.0 on the Vibe Coding Index, and MiMo-V2.6-Pro costs 28.7x less per output token ($0.87 vs $25.00 per million). Updated October 22, 2026; 64 benchmarks have a result for both.
Claude Opus 4.8 or MiMo-V2.6-Pro: which to pick
Claude Opus 4.8 and MiMo-V2.6-Pro are level for coding, 65.0 against 65.4 on the Vibe Coding Index, so price and context decide.
Pick Claude Opus 4.8 for work measured by Code migration (Vals AI) or ProgramBench (Vals AI), where it leads. Pick MiMo-V2.6-Pro for output tokens 28.7x cheaper ($0.87 vs $25.00 per million) and a larger context window (1.05M against 1M tokens).
- Shared results
- 64
- Claude Opus 4.8 only
- 66
- MiMo-V2.6-Pro only
- 9
- 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
No call
Level: 65.0 against 65.4, inside 2 points.
6 and 4 benchmarks behind the scores
Intelligence
AA Intelligence Index
MiMo-V2.6-Pro
MiMo-V2.6-Pro leads, 46.3 against 41.8.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only Claude Opus 4.8 has a AA Agentic Index result, 41.9.
Directional only
Reasoning
GPQA Diamond
No call
Only Claude Opus 4.8 has a GPQA Diamond result, 92.4%.
Directional only
Knowledge
MMLU Pro
No call
Only Claude Opus 4.8 has a MMLU Pro result, 89.6%.
Directional only
Web design
Design Arena: websites
MiMo-V2.6-Pro
MiMo-V2.6-Pro leads, 1308 against 1258.
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 Opus 4.8 $0.018, MiMo-V2.6-Pro $0.0009 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
No call
Only Claude Opus 4.8 has the number, $2.17.
Directional only
At a glance
- Coding index
- Claude Opus 4.8 65.0 from 6 benchmarks, MiMo-V2.6-Pro 65.4 from 4 benchmarks.
- Widest category
- Web design, 8.1 points apart on average over 7 shared benchmarks.
- Widest single gap
- Design Arena: 3D: Claude Opus 4.8 1222 against MiMo-V2.6-Pro 1330, 13.5 points apart on a 0 to 100 scale.
- Output price
- Claude Opus 4.8 $25.00 against MiMo-V2.6-Pro $0.87 per million output tokens, 28.7x apart.
- Context window
- Claude Opus 4.8 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 Opus 4.8 | Bars | MiMo-V2.6-Pro | Ties |
|---|---|---|---|---|
| Coding | 3 | 9 | ||
| Intelligence | 0 | 1 | ||
| Agentic work | 5 | 5 | ||
| Reasoning | 3 | 4 | ||
| Math | 0 | 3 | ||
| Knowledge | 1 | 4 | ||
| Web design | 1 | 6 | ||
| General | 5 | 14 | ||
| All shared boards | 18 | 46 |
CodingLike-for-likeSix of these boards feed the Vibe Coding Index39
| Benchmark | Claude Opus 4.8 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| LiveBench coding | 77.3% | 81.5% | MiMo-V2.6-Pro |
| LMArena WebDev | 1556 | 1625 | MiMo-V2.6-Pro |
| AA Coding Index | 74.3 | Not measured | Only Claude Opus 4.8 measured |
| LiveCodeBench (Vals AI) | 87.8% | Not measured | Only Claude Opus 4.8 measured |
| SWE-bench Verified (Vals AI) | 88.6% | Not measured | Only Claude Opus 4.8 measured |
| Terminal-Bench 4 (Vals AI) | 23.2% | 31.3% | MiMo-V2.6-Pro |
| Vibe Code Bench (Vals AI) | 82.7% | 85.2% | MiMo-V2.6-Pro |
| Code migration (Vals AI) | 47.3% | 43.0% | Claude Opus 4.8 |
| ProgramBench (Vals AI) | 1.0% | 0.5% | Claude Opus 4.8 |
| IOI (Vals AI) | Not measured | 39.3% | Only MiMo-V2.6-Pro measured |
| Terminal-Bench 2.1 (Vals AI) | 71.9% | 67.8% | Claude Opus 4.8 |
| SWE-bench Multimodal (Vals AI) | Not measured | 41.3% | Only MiMo-V2.6-Pro measured |
| SkillsBench (Vals AI) | 59.2% | Not measured | Only Claude Opus 4.8 measured |
| CyberBench (Vals AI) | Not measured | 72.9% | Only MiMo-V2.6-Pro measured |
| SciCode | 54.4% | 60.9% | MiMo-V2.6-Pro |
| Terminal-Bench Hard (Artificial Analysis run) | 58.3% | Not measured | Only Claude Opus 4.8 measured |
| FrontierCode | 46.5% | Not measured | Only Claude Opus 4.8 measured |
| GSO-Bench | 47.1% | Not measured | Only Claude Opus 4.8 measured |
| WeirdML | 82.9% | Not measured | Only Claude Opus 4.8 measured |
| ALE-Bench | Not measured | 1158.1 | Only MiMo-V2.6-Pro measured |
| LMArena Text: coding | 1490 | 1533 | MiMo-V2.6-Pro |
| LMArena Text: software and IT | 1488 | 1528 | MiMo-V2.6-Pro |
| LMArena WebDev: React | 1557 | 1639 | MiMo-V2.6-Pro |
| LMArena WebDev: HTML | 1543 | 1616 | MiMo-V2.6-Pro |
| LMArena WebDev: from an image | Not measured | 1598 | Only MiMo-V2.6-Pro measured |
| SciCode | 12.3% | Not measured | Only Claude Opus 4.8 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 Opus 4.8 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| AA Intelligence Index | 41.8 | 46.3 | MiMo-V2.6-Pro |
| Epoch Capabilities Index | 159.0 | Not measured | Only Claude Opus 4.8 measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index55
| Benchmark | Claude Opus 4.8 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| AA Agentic Index | 41.9 | Not measured | Only Claude Opus 4.8 measured |
| Design Arena: agents building web apps | 1233 | 1290 | MiMo-V2.6-Pro |
| Design Arena: agents building full-stack apps | 1249 | Not measured | Only Claude Opus 4.8 measured |
| Design Arena: agents building mobile apps | 1222 | Not measured | Only Claude Opus 4.8 measured |
| Design Arena: agents building Android apps | 1233 | Not measured | Only Claude Opus 4.8 measured |
| Design Arena: agents building Godot games | 1231 | Not measured | Only Claude Opus 4.8 measured |
| Design Arena: agents building games | 1239 | Not measured | Only Claude Opus 4.8 measured |
| Design Arena: HTML slides | 1171 | Not measured | Only Claude Opus 4.8 measured |
| Design Arena: PowerPoint slides | 1202 | Not measured | Only Claude Opus 4.8 measured |
| Design Arena: spreadsheets | 1303 | Not measured | Only Claude Opus 4.8 measured |
| LiveBench research | 81.8% | 76.7% | Claude Opus 4.8 |
| LiveBench browser | 96.0% | 88.0% | Claude Opus 4.8 |
| LiveBench long agentic | 48.3% | 47.5% | Claude Opus 4.8 |
| SREBench (Vals AI) | Not measured | 3.0% | Only MiMo-V2.6-Pro measured |
| Finance Agent (Vals AI) | 53.9% | 57.3% | MiMo-V2.6-Pro |
| Tax Agent Bench (Vals AI) | 30.0% | 32.4% | MiMo-V2.6-Pro |
| Legal Research Bench (Vals AI) | 43.8% | 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) | 69.4% | 62.9% | Claude Opus 4.8 |
| Terminal-Bench-Science (Vals AI) | 4.3% | 2.9% | Claude Opus 4.8 |
| Time Horizon Index (Vals AI) | 11.8% | Not measured | Only Claude Opus 4.8 measured |
| τ²-Bench Telecom | 94.4% | Not measured | Only Claude Opus 4.8 measured |
| APEX-Agents | 48.9% | 54.4% | MiMo-V2.6-Pro |
| Remote Labor Index | 8.3% | Not measured | Only Claude Opus 4.8 measured |
| OSWorld 2.0 | 20.6% | Not measured | Only Claude Opus 4.8 measured |
| DeepResearch Bench | 50.2% | Not measured | Only Claude Opus 4.8 measured |
| PostTrainBench | 33.8% | Not measured | Only Claude Opus 4.8 measured |
| Vending-Bench 2 | $5,787 | Not measured | Only Claude Opus 4.8 measured |
| LMArena Search | 1204 | Not measured | Only Claude Opus 4.8 measured |
| Neither model has a result on the other 12 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index34
| Benchmark | Claude Opus 4.8 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| GPQA Diamond | 92.4% | Not measured | Only Claude Opus 4.8 measured |
| LiveBench reasoning | 89.2% | 79.6% | Claude Opus 4.8 |
| MysteryMechanism (Vals AI) | Not measured | 15.3% | Only MiMo-V2.6-Pro measured |
| MMMU Pro (Vals AI) | 86.6% | Not measured | Only Claude Opus 4.8 measured |
| GPQA Diamond (Artificial Analysis run) | 92.0% | Not measured | Only Claude Opus 4.8 measured |
| Humanity's Last Exam (Artificial Analysis run) | 48.7% | 49.4% | MiMo-V2.6-Pro |
| GPQA Diamond (Epoch AI run) | 91.0% | Not measured | Only Claude Opus 4.8 measured |
| ARC-AGI | 92.5% | Not measured | Only Claude Opus 4.8 measured |
| ARC-AGI-2 | 72.1% | Not measured | Only Claude Opus 4.8 measured |
| SimpleBench | 64.8% | Not measured | Only Claude Opus 4.8 measured |
| Chess puzzles | 52.0% | Not measured | Only Claude Opus 4.8 measured |
| Mystery game puzzles | 36.0% | Not measured | Only Claude Opus 4.8 measured |
| EBR-bench | 28.6% | Not measured | Only Claude Opus 4.8 measured |
| LMArena Text: hard prompts | 1482 | 1511 | MiMo-V2.6-Pro |
| LMArena Text: expert | 1503 | 1541 | MiMo-V2.6-Pro |
| LMArena Text: hard prompts in English | 1487 | 1520 | MiMo-V2.6-Pro |
| LMArena Vision: diagrams | 1315 | 1281 | Claude Opus 4.8 |
| LMArena Vision: homework | 1337 | 1264 | Claude Opus 4.8 |
| Kagi LLM Benchmark | 88.8% | Not measured | Only Claude Opus 4.8 measured |
| Neither model has a result on the other 3 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index03
| Benchmark | Claude Opus 4.8 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| OTIS Mock AIME | 98.3% | Not measured | Only Claude Opus 4.8 measured |
| FrontierMath, tiers 1 to 3 | 80.0% | Not measured | Only Claude Opus 4.8 measured |
| FrontierMath, tier 4 | 56.1% | Not measured | Only Claude Opus 4.8 measured |
| ProofBench | 69.0% | 70.0% | MiMo-V2.6-Pro |
| LMArena Text: math | 1486 | 1500 | MiMo-V2.6-Pro |
| LMArena Text: mathematical work | 1497 | 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 Opus 4.8 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| MMLU Pro | 89.6% | Not measured | Only Claude Opus 4.8 measured |
| LegalBench (Vals AI) | 83.6% | Not measured | Only Claude Opus 4.8 measured |
| CorpFin (Vals AI) | 66.7% | Not measured | Only Claude Opus 4.8 measured |
| TaxEval (Vals AI) | 75.6% | Not measured | Only Claude Opus 4.8 measured |
| MortgageTax (Vals AI) | 69.9% | Not measured | Only Claude Opus 4.8 measured |
| MedCode (Vals AI) | 53.2% | 45.0% | Claude Opus 4.8 |
| SimpleQA Verified | 53.0% | Not measured | Only Claude Opus 4.8 measured |
| LMArena Text: science | 1477 | 1506 | MiMo-V2.6-Pro |
| LMArena Text: medicine and healthcare | 1464 | 1497 | MiMo-V2.6-Pro |
| LMArena Text: legal and government | 1477 | 1485 | MiMo-V2.6-Pro |
| LMArena Text: business and finance | 1458 | 1468 | MiMo-V2.6-Pro |
| FACTS Benchmark Suite | 53.5% | Not measured | Only Claude Opus 4.8 measured |
| Neither model has a result on the other 6 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index16
| Benchmark | Claude Opus 4.8 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| Design Arena: websites | 1258 | 1308 | MiMo-V2.6-Pro |
| Design Arena: UI components | 1255 | 1340 | MiMo-V2.6-Pro |
| Design Arena: game dev | 1264 | 1314 | MiMo-V2.6-Pro |
| Design Arena: data viz | 1240 | 1336 | MiMo-V2.6-Pro |
| Design Arena: 3D | 1222 | 1330 | MiMo-V2.6-Pro |
| Design Arena: all code categories | 1255 | 1317 | MiMo-V2.6-Pro |
| Design Arena: SVG | 1195 | Not measured | Only Claude Opus 4.8 measured |
| Design Arena: ASCII art | 1277 | Not measured | Only Claude Opus 4.8 measured |
| LiveBench design | 78.8% | 78.5% | Claude Opus 4.8 |
GeneralLike-for-likePublic boards, shown as published, kept out of the index514
| Benchmark | Claude Opus 4.8 | MiMo-V2.6-Pro | Leader |
|---|---|---|---|
| Vals Index | Not measured | 57.8% | Only MiMo-V2.6-Pro measured |
| LiveBench data analysis | 66.0% | 72.3% | MiMo-V2.6-Pro |
| Public Benefits Bench (Vals AI) | 68.1% | 68.9% | MiMo-V2.6-Pro |
| SAGE (Vals AI) | 54.8% | 45.0% | Claude Opus 4.8 |
| MedScribe (Vals AI) | 85.8% | 88.3% | MiMo-V2.6-Pro |
| Vals Multimodal Index | 70.9% | Not measured | Only Claude Opus 4.8 measured |
| IFBench | 62.2% | Not measured | Only Claude Opus 4.8 measured |
| Long context reasoning (AA-LCR) | 77.7% | 86.3% | MiMo-V2.6-Pro |
| DTBench | 94.9% | Not measured | Only Claude Opus 4.8 measured |
| LMCA | 57.5% | Not measured | Only Claude Opus 4.8 measured |
| Surface Evolver Bench | 87.5% | Not measured | Only Claude Opus 4.8 measured |
| Furniture assembly | 42.5% | Not measured | Only Claude Opus 4.8 measured |
| LMArena Text | 1461 | 1491 | MiMo-V2.6-Pro |
| LMArena Text: instruction following | 1476 | 1491 | MiMo-V2.6-Pro |
| LMArena Text: creative writing | 1454 | 1466 | MiMo-V2.6-Pro |
| LMArena Vision | 1294 | 1263 | Claude Opus 4.8 |
| LMArena Text: English | 1468 | 1504 | MiMo-V2.6-Pro |
| LMArena Text: non-English | 1450 | 1474 | MiMo-V2.6-Pro |
| LMArena Text: Chinese | 1506 | 1529 | MiMo-V2.6-Pro |
| LMArena Text: German | 1472 | Not measured | Only Claude Opus 4.8 measured |
| LMArena Text: Japanese | 1442 | Not measured | Only Claude Opus 4.8 measured |
| LMArena Text: Korean | 1431 | Not measured | Only Claude Opus 4.8 measured |
| LMArena Text: French | 1481 | Not measured | Only Claude Opus 4.8 measured |
| LMArena Text: Spanish | 1465 | Not measured | Only Claude Opus 4.8 measured |
| LMArena Text: Russian | 1474 | 1479 | MiMo-V2.6-Pro |
| LMArena Text: Polish | 1459 | Not measured | Only Claude Opus 4.8 measured |
| LMArena Text: multi-turn | 1476 | 1466 | Claude Opus 4.8 |
| LMArena Text: longer queries | 1483 | 1501 | MiMo-V2.6-Pro |
| LMArena Text: writing and language | 1461 | 1470 | MiMo-V2.6-Pro |
| LMArena Text: entertainment and media | 1440 | 1465 | MiMo-V2.6-Pro |
| LMArena Vision: English | 1293 | 1268 | Claude Opus 4.8 |
| LMArena Vision: Chinese | 1346 | Not measured | Only Claude Opus 4.8 measured |
| LMArena Vision: reading text | 1303 | 1270 | Claude Opus 4.8 |
| LMArena Vision: humor | 1282 | Not measured | Only Claude Opus 4.8 measured |
| LMArena Vision: creative writing | 1301 | Not measured | Only Claude Opus 4.8 measured |
| LMArena Document | 1475 | Not measured | Only Claude Opus 4.8 measured |
| Neither model has a result on the other 10 boards here | |||
Image generationNot comparablePublic boards, shown as published, kept out of the index0 boards, none shared
| Benchmark | Claude Opus 4.8 | 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 Opus 4.8 | Xiaomi MiMo-V2.6-Pro |
|---|---|---|
| Maker | Anthropic | Xiaomi |
| Weights | No public weights listed | Open weights |
| Released | May 27, 2026 | September 21, 2026 |
| Context window | 1M | 1.05M |
| Input $/Mtok | $5.00 | $0.435 |
| Output $/Mtok | $25.00 | $0.87 |
| Coding index | 65.0 | 65.4 |
| Independent measurements behind it | 6 | 4 |
| Cost per solved task | $2.17 | Not computable |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Opus 4.8 better than MiMo-V2.6-Pro for coding?
Claude Opus 4.8 and MiMo-V2.6-Pro are level for coding, 65.0 against 65.4 on the Vibe Coding Index, so price and context decide. Pick Claude Opus 4.8 for work measured by Code migration (Vals AI) or ProgramBench (Vals AI), where it leads. Pick MiMo-V2.6-Pro for output tokens 28.7x cheaper ($0.87 vs $25.00 per million) and a larger context window (1.05M against 1M tokens).
Which is cheaper, Claude Opus 4.8 or MiMo-V2.6-Pro?
Claude Opus 4.8 costs $5.00 per million input tokens and $25.00 per million output tokens; MiMo-V2.6-Pro costs $0.435 and $0.87. Cost per solved task is known for Claude Opus 4.8 only.
Which has the bigger context window, Claude Opus 4.8 or MiMo-V2.6-Pro?
MiMo-V2.6-Pro, with 1.05M tokens against 1M.
How many benchmarks is the Claude Opus 4.8 vs MiMo-V2.6-Pro comparison based on?
64 benchmarks have a result for both models as of October 22, 2026. Claude Opus 4.8'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.