Claude Opus 4.5 vs MiMo-V2.5
Updated October 21, 2026. 60 benchmarks have a result for both. Coding is ranked on the Vibe Coding Index; every other board is shown as published.
Decision reading
Pick Claude Opus 4.5 for coding: it scores 66.8 on the Vibe Coding Index against 34.0 for MiMo-V2.5.
Pick MiMo-V2.5 when output tokens cost 105.0x less, or when a solved task costs $0.01 against $1.37.
- Shared results
- 60
- Claude Opus 4.5 only
- 45
- MiMo-V2.5 only
- 20
- Like-for-like categories
- 8 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
Claude Opus 4.5
Claude Opus 4.5 scores 66.8 against 34.0.
2 and 1 benchmarks behind the scores
Intelligence
AA Intelligence Index
Claude Opus 4.5
Claude Opus 4.5 leads, 29.1 against 21.8.
Same board, both measured
Agentic work
AA Agentic Index
No call
Only MiMo-V2.5 has a AA Agentic Index result, 15.8.
Directional only
Reasoning
GPQA Diamond
Claude Opus 4.5
Claude Opus 4.5 leads, 85.9% against 81.6%.
Same board, both measured
Math
AIME
No call
Only Claude Opus 4.5 has a AIME result, 95.4%.
Directional only
Knowledge
MMLU Pro
Claude Opus 4.5
Claude Opus 4.5 leads, 87.3% against 82.9%.
Same board, both measured
Web design
Design Arena: websites
MiMo-V2.5
MiMo-V2.5 leads, 1266 against 1247.
Same board, both measured
Long documents
Listed context window
MiMo-V2.5
MiMo-V2.5 takes 1.05M tokens against 200K.
Listed by OpenRouter
Everyday cost
1K input + 500 output tokens
MiMo-V2.5
Claude Opus 4.5 $0.018, MiMo-V2.5 $0.0002 per turn.
List prices
Cost per solved task
One SWE-bench Verified task, solved
MiMo-V2.5
Claude Opus 4.5 $1.37, MiMo-V2.5 $0.01.
Published attempt cost and pass rate
At a glance
- Coding index
- Claude Opus 4.5 66.8 from 2 benchmarks, MiMo-V2.5 34.0 from 1 benchmark.
- Widest category
- Math, 9.1 points apart on average over 3 shared benchmarks.
- Widest single gap
- Vibe Code Bench (Vals AI): Claude Opus 4.5 20.6% against MiMo-V2.5 42.2%, 21.5 points apart on a 0 to 100 scale.
- Output price
- Claude Opus 4.5 $25.00 against MiMo-V2.5 $0.238 per million output tokens, 105.0x apart.
- Context window
- Claude Opus 4.5 takes 200K tokens, MiMo-V2.5 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 4.5 | Bars | MiMo-V2.5 | Ties |
|---|---|---|---|---|
| Coding | 8 | 1 | ||
| Intelligence | 1 | 0 | ||
| Agentic work | 0 | 1 | ||
| Reasoning | 7 | 0 | ||
| Math | 3 | 0 | ||
| Knowledge | 10 | 0 | ||
| Web design | 2 | 6 | ||
| General | 20 | 1 | ||
| All shared boards | 51 | 9 |
CodingLike-for-likeFour of these boards feed the Vibe Coding Index81
| Benchmark | Claude Opus 4.5 | MiMo-V2.5 | Leader |
|---|---|---|---|
| SWE-bench Verified | 79.2% | Not measured | Only Claude Opus 4.5 measured |
| SWE-bench (full test set) | 52.6% | Not measured | Only Claude Opus 4.5 measured |
| SWE-bench Multilingual | 70.7% | Not measured | Only Claude Opus 4.5 measured |
| LMArena WebDev | 1494 | 1438 | Claude Opus 4.5 |
| AA Coding Index | Not measured | 56.8 | Only MiMo-V2.5 measured |
| LiveCodeBench (Vals AI) | 83.7% | 81.5% | Claude Opus 4.5 |
| SWE-bench Verified (Vals AI) | 76.4% | 71.0% | Claude Opus 4.5 |
| Vibe Code Bench (Vals AI) | 20.6% | 42.2% | MiMo-V2.5 |
| Code migration (Vals AI) | Not measured | 14.2% | Only MiMo-V2.5 measured |
| Terminal-Bench 2.1 (Vals AI) | Not measured | 60.7% | Only MiMo-V2.5 measured |
| LiveCodeBench (Artificial Analysis run) | 87.1% | Not measured | Only Claude Opus 4.5 measured |
| SciCode | Not measured | 43.9% | Only MiMo-V2.5 measured |
| Terminal-Bench Hard (Artificial Analysis run) | 47.0% | 41.7% | Claude Opus 4.5 |
| Terminal-Bench | 63.1% | Not measured | Only Claude Opus 4.5 measured |
| GSO-Bench | 26.5% | Not measured | Only Claude Opus 4.5 measured |
| WeirdML | 63.7% | Not measured | Only Claude Opus 4.5 measured |
| Cybench | 82.0% | Not measured | Only Claude Opus 4.5 measured |
| ALE-Bench | Not measured | 514.0 | Only MiMo-V2.5 measured |
| LMArena Text: coding | 1503 | 1469 | Claude Opus 4.5 |
| LMArena Text: software and IT | 1483 | 1463 | Claude Opus 4.5 |
| LMArena WebDev: React | 1478 | 1425 | Claude Opus 4.5 |
| LMArena WebDev: HTML | 1510 | 1429 | Claude Opus 4.5 |
| Neither model has a result on the other 16 boards here | |||
IntelligenceLike-for-likePublic boards, shown as published, kept out of the index10
| Benchmark | Claude Opus 4.5 | MiMo-V2.5 | Leader |
|---|---|---|---|
| AA Intelligence Index | 29.1 | 21.8 | Claude Opus 4.5 |
| Epoch Capabilities Index | 150.1 | Not measured | Only Claude Opus 4.5 measured |
Agentic workLike-for-likePublic boards, shown as published, kept out of the index01
| Benchmark | Claude Opus 4.5 | MiMo-V2.5 | Leader |
|---|---|---|---|
| AA Agentic Index | Not measured | 15.8 | Only MiMo-V2.5 measured |
| Design Arena: agents building web apps | 1159 | Not measured | Only Claude Opus 4.5 measured |
| Design Arena: agents building full-stack apps | 1156 | Not measured | Only Claude Opus 4.5 measured |
| Design Arena: agents building mobile apps | 1189 | Not measured | Only Claude Opus 4.5 measured |
| Design Arena: agents building Android apps | 1181 | Not measured | Only Claude Opus 4.5 measured |
| Finance Agent (Vals AI) | Not measured | 36.7% | Only MiMo-V2.5 measured |
| Tax Agent Bench (Vals AI) | Not measured | 7.8% | Only MiMo-V2.5 measured |
| Legal Research Bench (Vals AI) | Not measured | 9.1% | Only MiMo-V2.5 measured |
| Excel Modeling Benchmark (Vals AI) | Not measured | 55.1% | Only MiMo-V2.5 measured |
| τ²-Bench Telecom | 89.5% | 90.6% | MiMo-V2.5 |
| METR time horizons | 75.0% | Not measured | Only Claude Opus 4.5 measured |
| Remote Labor Index | 3.8% | Not measured | Only Claude Opus 4.5 measured |
| GDPval | 45.5% | Not measured | Only Claude Opus 4.5 measured |
| BALROG | 43.5% | Not measured | Only Claude Opus 4.5 measured |
| DeepResearch Bench | 54.8% | Not measured | Only Claude Opus 4.5 measured |
| OSWorld | 66.3% | Not measured | Only Claude Opus 4.5 measured |
| Vending-Bench 2 | $4,967 | Not measured | Only Claude Opus 4.5 measured |
| Neither model has a result on the other 22 boards here | |||
ReasoningLike-for-likePublic boards, shown as published, kept out of the index70
| Benchmark | Claude Opus 4.5 | MiMo-V2.5 | Leader |
|---|---|---|---|
| GPQA Diamond | 85.9% | 81.6% | Claude Opus 4.5 |
| MMMU Pro (Vals AI) | 83.0% | 80.0% | Claude Opus 4.5 |
| GPQA Diamond (Artificial Analysis run) | 86.6% | 84.9% | Claude Opus 4.5 |
| Humanity's Last Exam (Artificial Analysis run) | 30.1% | 27.2% | Claude Opus 4.5 |
| GPQA Diamond (Epoch AI run) | 86.0% | Not measured | Only Claude Opus 4.5 measured |
| ARC-AGI | 80.0% | Not measured | Only Claude Opus 4.5 measured |
| ARC-AGI-2 | 37.6% | Not measured | Only Claude Opus 4.5 measured |
| SimpleBench | 62.0% | Not measured | Only Claude Opus 4.5 measured |
| Chess puzzles | 14.0% | Not measured | Only Claude Opus 4.5 measured |
| Mystery game puzzles | 22.0% | Not measured | Only Claude Opus 4.5 measured |
| EBR-bench | 14.3% | Not measured | Only Claude Opus 4.5 measured |
| VPCT | 40.0% | Not measured | Only Claude Opus 4.5 measured |
| LMArena Text: hard prompts | 1476 | 1450 | Claude Opus 4.5 |
| LMArena Text: expert | 1487 | 1459 | Claude Opus 4.5 |
| LMArena Text: hard prompts in English | 1482 | 1461 | Claude Opus 4.5 |
| LMArena Vision: diagrams | Not measured | 1269 | Only MiMo-V2.5 measured |
| LMArena Vision: homework | Not measured | 1262 | Only MiMo-V2.5 measured |
| Neither model has a result on the other 4 boards here | |||
MathLike-for-likePublic boards, shown as published, kept out of the index30
| Benchmark | Claude Opus 4.5 | MiMo-V2.5 | Leader |
|---|---|---|---|
| AIME | 95.4% | Not measured | Only Claude Opus 4.5 measured |
| MGSM (Vals AI) | 95.2% | Not measured | Only Claude Opus 4.5 measured |
| AA Math Index | 91.3 | Not measured | Only Claude Opus 4.5 measured |
| AIME 2025 (Artificial Analysis run) | 91.3% | Not measured | Only Claude Opus 4.5 measured |
| OTIS Mock AIME | 86.1% | Not measured | Only Claude Opus 4.5 measured |
| FrontierMath, tiers 1 to 3 | 34.4% | Not measured | Only Claude Opus 4.5 measured |
| FrontierMath, tier 4 | 4.9% | Not measured | Only Claude Opus 4.5 measured |
| ProofBench | 36.0% | 16.0% | Claude Opus 4.5 |
| LMArena Text: math | 1463 | 1436 | Claude Opus 4.5 |
| LMArena Text: mathematical work | 1468 | 1451 | Claude Opus 4.5 |
| Neither model has a result on the other 3 boards here | |||
KnowledgeLike-for-likePublic boards, shown as published, kept out of the index100
| Benchmark | Claude Opus 4.5 | MiMo-V2.5 | Leader |
|---|---|---|---|
| MMLU Pro | 87.3% | 82.9% | Claude Opus 4.5 |
| LegalBench (Vals AI) | 84.6% | 78.9% | Claude Opus 4.5 |
| CaseLaw (Vals AI) | 62.6% | Not measured | Only Claude Opus 4.5 measured |
| CorpFin (Vals AI) | 65.1% | 59.9% | Claude Opus 4.5 |
| TaxEval (Vals AI) | 74.9% | 71.8% | Claude Opus 4.5 |
| MortgageTax (Vals AI) | 68.7% | 59.3% | Claude Opus 4.5 |
| MedQA (Vals AI) | 95.9% | Not measured | Only Claude Opus 4.5 measured |
| MedCode (Vals AI) | 49.2% | 31.9% | Claude Opus 4.5 |
| MMLU Pro (Artificial Analysis run) | 89.5% | Not measured | Only Claude Opus 4.5 measured |
| SimpleQA Verified | 45.7% | Not measured | Only Claude Opus 4.5 measured |
| GeoBench | 75.0% | Not measured | Only Claude Opus 4.5 measured |
| LMArena Text: science | 1454 | 1440 | Claude Opus 4.5 |
| LMArena Text: medicine and healthcare | 1444 | 1432 | Claude Opus 4.5 |
| LMArena Text: legal and government | 1459 | 1425 | Claude Opus 4.5 |
| LMArena Text: business and finance | 1448 | 1432 | Claude Opus 4.5 |
| Neither model has a result on the other 2 boards here | |||
Web designLike-for-likePublic boards, shown as published, kept out of the index26
| Benchmark | Claude Opus 4.5 | MiMo-V2.5 | Leader |
|---|---|---|---|
| Design Arena: websites | 1247 | 1266 | MiMo-V2.5 |
| Design Arena: UI components | 1238 | 1257 | MiMo-V2.5 |
| Design Arena: game dev | 1229 | 1249 | MiMo-V2.5 |
| Design Arena: data viz | 1243 | 1249 | MiMo-V2.5 |
| Design Arena: 3D | 1214 | 1216 | MiMo-V2.5 |
| Design Arena: all code categories | 1242 | 1260 | MiMo-V2.5 |
| Design Arena: SVG | 1180 | 1178 | Claude Opus 4.5 |
| Design Arena: ASCII art | 1190 | 1141 | Claude Opus 4.5 |
| Neither model has a result on the other 1 board here | |||
GeneralLike-for-likePublic boards, shown as published, kept out of the index201
| Benchmark | Claude Opus 4.5 | MiMo-V2.5 | Leader |
|---|---|---|---|
| SAGE (Vals AI) | 52.1% | 43.3% | Claude Opus 4.5 |
| MedScribe (Vals AI) | 85.3% | 72.2% | Claude Opus 4.5 |
| Vals Multimodal Index | Not measured | 52.8% | Only MiMo-V2.5 measured |
| IFBench | 58.0% | 67.1% | MiMo-V2.5 |
| Long context reasoning (AA-LCR) | 77.3% | 73.0% | Claude Opus 4.5 |
| DTBench | 89.9% | Not measured | Only Claude Opus 4.5 measured |
| LMCA | 44.5% | Not measured | Only Claude Opus 4.5 measured |
| CL-bench | 21.1% | Not measured | Only Claude Opus 4.5 measured |
| Furniture assembly | 28.3% | Not measured | Only Claude Opus 4.5 measured |
| LMArena Text | 1451 | 1428 | Claude Opus 4.5 |
| LMArena Text: instruction following | 1478 | 1435 | Claude Opus 4.5 |
| LMArena Text: creative writing | 1445 | 1393 | Claude Opus 4.5 |
| LMArena Vision | Not measured | 1247 | Only MiMo-V2.5 measured |
| LMArena Text: English | 1461 | 1447 | Claude Opus 4.5 |
| LMArena Text: non-English | 1438 | 1405 | Claude Opus 4.5 |
| LMArena Text: Chinese | 1470 | 1469 | Claude Opus 4.5 |
| LMArena Text: German | 1449 | 1421 | Claude Opus 4.5 |
| LMArena Text: Japanese | 1417 | 1306 | Claude Opus 4.5 |
| LMArena Text: Korean | 1424 | 1361 | Claude Opus 4.5 |
| LMArena Text: French | 1471 | 1448 | Claude Opus 4.5 |
| LMArena Text: Spanish | 1457 | 1414 | Claude Opus 4.5 |
| LMArena Text: Russian | 1447 | 1396 | Claude Opus 4.5 |
| LMArena Text: Polish | 1439 | 1413 | Claude Opus 4.5 |
| LMArena Text: multi-turn | 1466 | 1445 | Claude Opus 4.5 |
| LMArena Text: longer queries | 1479 | 1445 | Claude Opus 4.5 |
| LMArena Text: writing and language | 1452 | 1409 | Claude Opus 4.5 |
| LMArena Text: entertainment and media | 1434 | 1399 | Claude Opus 4.5 |
| LMArena Vision: English | Not measured | 1259 | Only MiMo-V2.5 measured |
| LMArena Vision: Chinese | Not measured | 1326 | Only MiMo-V2.5 measured |
| LMArena Vision: reading text | Not measured | 1256 | Only MiMo-V2.5 measured |
| LMArena Vision: humor | Not measured | 1226 | Only MiMo-V2.5 measured |
| LMArena Vision: recognizing things | Not measured | 1189 | Only MiMo-V2.5 measured |
| LMArena Vision: creative writing | Not measured | 1230 | Only MiMo-V2.5 measured |
| LMArena Document | 1462 | Not measured | Only Claude Opus 4.5 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 Opus 4.5 | MiMo-V2.5 | 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-V2.5 costs less
Repository review
50K input + 3K output tokens
MiMo-V2.5 costs less
Agent loop
200K input + 10K output tokens
MiMo-V2.5 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 4.5 | Xiaomi MiMo-V2.5 |
|---|---|---|
| Maker | Anthropic | Xiaomi |
| Weights | No public weights listed | Open weights |
| Released | November 24, 2025 | April 22, 2026 |
| Context window | 200K | 1.05M |
| Input $/Mtok | $5.00 | $0.119 |
| Output $/Mtok | $25.00 | $0.238 |
| Coding index | 66.8 | 34.0 |
| Independent measurements behind it | 2 | 1 |
| Cost per solved task | $1.37 | $0.01 |
| Source | OpenRouter listing | OpenRouter listing |
Questions
Is Claude Opus 4.5 better than MiMo-V2.5 for coding?
Pick Claude Opus 4.5 for coding: it scores 66.8 on the Vibe Coding Index against 34.0 for MiMo-V2.5. Pick MiMo-V2.5 when output tokens cost 105.0x less, or when a solved task costs $0.01 against $1.37.
Which is cheaper, Claude Opus 4.5 or MiMo-V2.5?
Claude Opus 4.5 costs $5.00 per million input tokens and $25.00 per million output tokens; MiMo-V2.5 costs $0.119 and $0.238. Per solved SWE-bench Verified task, Claude Opus 4.5 costs $1.37 and MiMo-V2.5 $0.01.
Which has the bigger context window, Claude Opus 4.5 or MiMo-V2.5?
MiMo-V2.5, with 1.05M tokens against 200K.
How many benchmarks is the Claude Opus 4.5 vs MiMo-V2.5 comparison based on?
60 benchmarks have a result for both models as of October 21, 2026. Claude Opus 4.5's coding index rests on 2 independent benchmarks and MiMo-V2.5's on 1. Where only one model has a result, the page says so instead of naming a winner.