Model comparison
Claude Opus 4.5 vs MiMo-V2.5-Pro
Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 45.2 on the Noometry Index. MiMo-V2.5-Pro costs 18× less per token, which makes it the better buy when Claude Opus 4.5's lead doesn't matter for your workload.
Last verified . 24 shared benchmarks.
Summary
- They share 24 benchmarks with published results for both. Claude Opus 4.5 scores higher in 6 categories and MiMo-V2.5-Pro in 2 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Claude Opus 4.5 leads 42.6 to 26.8.
- The biggest single-benchmark swing is NYT Connections (extended): 52.5% for Claude Opus 4.5 and 34.4% for MiMo-V2.5-Pro.
- MiMo-V2.5-Pro is cheaper at $0.43 / $0.87 per million input/output tokens, against $5 / $25 for Claude Opus 4.5.
- MiMo-V2.5-Pro accepts more context: 1.05M tokens versus 200K.
- MiMo-V2.5-Pro has downloadable open weights; the other is API-only.
Side by side
| Claude Opus 4.5 | MiMo-V2.5-Pro | |
|---|---|---|
| Provider | Anthropic | Xiaomi |
| Noometry Index | 50.5 | 45.2 |
| Released | 2025-11-01 | 2026-04-22 |
| Weights | Proprietary | Open |
| Context window | 200K | 1.05M |
| Max output | 64K | 131K |
| Input $ / M tokens | $5 | $0.43 |
| Output $ / M tokens | $25 | $0.87 |
| Results tracked | 69 | 27 |
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Category by category
Coding Claude Opus 4.5 leads
Claude Opus 4.5: 54.8 (#27), MiMo-V2.5-Pro: 47.4 (#60)
| Benchmark | Claude Opus 4.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena WebDev | 1494 | 1479 |
| LMArena Coding | 1504 | 1503 |
| ALE-Bench | 1,025 | 899.8 |
| SWE-bench Verified | 76.7% | — |
| SWE-bench Verified (bash only) | 76.8% | — |
| SWE-bench Multilingual | 70.7% | — |
| SciCode | — | 50.2% |
| GSO | 26.5% | — |
| WeirdML | 63.7% | — |
| AlgoTune | 1.77 | — |
Agentic & Tool Use Not comparable
Claude Opus 4.5: 47.3 (#12), MiMo-V2.5-Pro: —
| Benchmark | Claude Opus 4.5 | MiMo-V2.5-Pro |
|---|---|---|
| Terminal-Bench | 63.1% | — |
| Berkeley Function Calling Leaderboard | 77.5% | — |
| GDPval | 45.5% | — |
| Remote Labor Index | 3.8% | — |
| τ²-bench Airline | 84% | — |
| τ²-bench Banking | 24.7% | — |
| τ²-bench Retail | 79.6% | — |
| τ²-bench Telecom | 92.3% | — |
| Cybench | 82% | — |
| DeepResearch Bench | 54.8% | — |
| OSWorld | 66.3% | — |
| BALROG | 43.5% | — |
| LMArena Search | 1180 | — |
| METR Time Horizons | 75% | — |
| Vending-Bench 2 | 4,967 | — |
Reasoning Claude Opus 4.5 leads
Claude Opus 4.5: 42.6 (#51), MiMo-V2.5-Pro: 26.8 (#130)
| Benchmark | Claude Opus 4.5 | MiMo-V2.5-Pro |
|---|---|---|
| NYT Connections (extended) | 52.5% | 34.4% |
| LMArena Hard Prompts | 1476 | 1488 |
| DTBench | 89.9% | 84.5% |
| LMCA | 44.5% | 29.5% |
| ARC-AGI-2 | 37.6% | — |
| SimpleBench | 62% | — |
| Kagi LLM Benchmark | 80.2% | — |
| ARC-AGI-1 | 80% | — |
| CritPt | — | 4% |
| Chess Puzzles | 12% | — |
| EnigmaEval | 11.9% | — |
| EBR-Bench | 14.3% | — |
| Mystery Game Puzzles | 22% | — |
| Epoch Capabilities Index | 150.09 | — |
| ForecastBench | 60.7 | — |
Math MiMo-V2.5-Pro leads
Claude Opus 4.5: 38.6 (#132), MiMo-V2.5-Pro: 40.0 (#96)
| Benchmark | Claude Opus 4.5 | MiMo-V2.5-Pro |
|---|---|---|
| ProofBench | 36% | 22% |
| LMArena Math | 1463 | 1481 |
| FrontierMath (Tiers 1-3) | 34.4% | — |
| FrontierMath Tier 4 | 4.9% | — |
| OTIS Mock AIME 2024-2025 | 86.1% | — |
| FrontierMath (Feb 2025 set) | 20.7% | — |
| FrontierMath Tier 4 (v1) | 4.2% | — |
Knowledge Claude Opus 4.5 leads
Claude Opus 4.5: 56.5 (#44), MiMo-V2.5-Pro: 42.2 (#98)
| Benchmark | Claude Opus 4.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Expert | 1487 | 1503 |
| GPQA Diamond | 86% | — |
| Humanity's Last Exam | 25.2% | — |
| SimpleQA Verified | 45.7% | — |
| Vectara Hallucination Rate | 10.9% | — |
Multimodal Not comparable
Claude Opus 4.5: 31.4 (#107), MiMo-V2.5-Pro: —
| Benchmark | Claude Opus 4.5 | MiMo-V2.5-Pro |
|---|---|---|
| GeoBench | 75% | — |
| VPCT | 40% | — |
| Furniture Assembly | 28.3% | — |
| LMArena Document | 1462 | — |
Multilingual Too close to call
Claude Opus 4.5: 54.3 (#47), MiMo-V2.5-Pro: 55.1 (#34)
| Benchmark | Claude Opus 4.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Non-English | 1438 | 1449 |
| LMArena Chinese | 1470 | 1507 |
| LMArena French | 1471 | 1488 |
| LMArena German | 1449 | 1458 |
| LMArena Japanese | 1416 | 1412 |
| LMArena Korean | 1424 | 1437 |
| LMArena Russian | 1447 | 1450 |
| LMArena Spanish | 1458 | 1471 |
Instruction Following Too close to call
Claude Opus 4.5: 77.5 (#19), MiMo-V2.5-Pro: 77.5 (#21)
| Benchmark | Claude Opus 4.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Instruction Following | 1478 | 1477 |
Long Context Claude Opus 4.5 leads
Claude Opus 4.5: 46.5 (#22), MiMo-V2.5-Pro: 45.4 (#37)
| Benchmark | Claude Opus 4.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Longer Query | 1480 | 1483 |
| CL-bench | 21.1% | — |
Writing & Preference Claude Opus 4.5 leads
Claude Opus 4.5: 68.1 (#28), MiMo-V2.5-Pro: 65.3 (#49)
| Benchmark | Claude Opus 4.5 | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Text | 1451 | 1465 |
| LMArena Creative Writing | 1445 | 1440 |
| EQ-Bench Creative Writing | 1687 | 1493 |
| LMArena Multi-Turn | 1466 | 1477 |
| EQ-Bench 4 | — | 1208 |
Frequently asked questions
Is Claude Opus 4.5 better than MiMo-V2.5-Pro?
Claude Opus 4.5 is the stronger model overall, scoring 50.5 to 45.2 on the Noometry Index. MiMo-V2.5-Pro costs 18× less per token, which makes it the better buy when Claude Opus 4.5's lead doesn't matter for your workload.
Which is cheaper, Claude Opus 4.5 or MiMo-V2.5-Pro?
MiMo-V2.5-Pro is cheaper. It lists at $0.43 per million input tokens and $0.87 per million output tokens; Claude Opus 4.5 lists at $5 and $25.
Is Claude Opus 4.5 or MiMo-V2.5-Pro better for coding?
Claude Opus 4.5 scores higher on coding benchmarks: 54.8 versus 47.4 in the Noometry coding category.
Which has the bigger context window?
MiMo-V2.5-Pro does, with 1.05M tokens against 200K.
How many benchmarks do Claude Opus 4.5 and MiMo-V2.5-Pro share?
24 benchmarks have published results for both models. Claude Opus 4.5 has 69 scored results on Noometry and MiMo-V2.5-Pro has 27.