Claude Opus 5.5 vs Mimo v2 Pro
Claude Opus 5.5 
Mimo v2 Pro Verdict
- Claude Opus 5.5 (thinking) leads on quality: 70.7 vs 59.6.
- Claude Opus 5.5 (thinking) is stronger in composite, knowledge, long context, multimodal, reasoning.
- Mimo v2 Pro is stronger in agents & tools, coding, human preference, instruction following, maths.
- Mimo v2 Pro is 2.7× cheaper ($3.00 vs $8.00 per 1M blended).
| Metric | Claude Opus 5.5 (thinking) | Mimo v2 Pro |
|---|---|---|
| BenchLeader Index | 70.7 | 59.6 |
| Composite score | 95.0 | 64.1 |
| Knowledge score | 85.0 | 65.5 |
| Long context score | 68.5 | 60.1 |
| Multimodal score | 71.9 | – |
| Reasoning score | 95.0 | 49.9 |
| Agents & tools score | – | 69.2 |
| Coding score | – | 54.5 |
| Human preference score | – | 64.3 |
| Instruction following score | – | 67.7 |
| Maths score | – | 64.3 |
| Blended price $/M | $8.00 | $3.00 |
| Output speed | 48 tok/s | – |
| Time to first answer | 4.2 s | – |
| Context window | 1M | 1.0M |
| LMArena Text | – | 1448 |
| LMArena Hard Prompts | – | 1476 |
| LMArena Coding | – | 1503 |
| LMArena WebDev | – | 1434 |
| AA Intelligence Index | 57.6 | 28.6 |
| IFBench | – | 68.8% |
| AA-LCR | 84.7% | 68.3% |
| MMMU-Pro | 87.7% | – |
| AA-Omniscience | 46.4 | 4.6 |
| Terminal-Bench Hard | – | 40.9% |
| GPQA Diamond (AA) | – | 87.0% |
| Humanity's Last Exam (AA) | 61.4% | 30.4% |
| SciCode (AA) | 66.9% | – |
| τ²-Bench Telecom (AA) | – | 95.0% |
| CritPt | 31.7% | 0.3% |
| GDPval (AA) | 67.3% | – |
| LMArena Maths | – | 1452 |
| LMArena Creative Writing | – | 1426 |
| LMArena Instruction Following | – | 1444 |
| LMArena Multi-turn | – | 1469 |
| LMArena Longer Queries | – | 1467 |
| CL-bench | – | 15.7% |
| CL-bench Life | – | 6.9% |
| ALE-Bench | – | 785.2 |
| Terminal-Bench 4.0 (AA) | 59.6% | – |
| AutomationBench | 69.5% | – |
| GDP.pdf | 26.2% | – |
| Harvey LAB | 91.2% | – |
| AA-Omniscience: accuracy | 66.2% | 26.6% |
| AA-Omniscience: non-hallucination | 41.4% | 70.0% |
| AA-Briefcase | 1822 | – |
Data as of 2026-09-22. Best configuration of each model; every score links to its source on the model pages.
Claude Opus 5.5 vs Mimo v2 Pro: questions
- Is Claude Opus 5.5 better than Mimo v2 Pro?
- Claude Opus 5.5 (thinking) leads on quality: 70.7 vs 59.6. The BenchLeader Index combines every independent quality benchmark; Claude Opus 5.5 (thinking) is ahead overall as of 2026-09-22, but check the category scores for your use.
- Which is cheaper, Claude Opus 5.5 or Mimo v2 Pro?
- Mimo v2 Pro is cheaper: $3.00 against $8.00 per million tokens, blended at three input tokens per output token.
- Which has the larger context window?
- Mimo v2 Pro accepts more context: 1.0M against 1M tokens.