MiMo-V2.6-Pro vs Step 5 Preview
MiMo-V2.6-Pro 
Step 5 Preview Verdict
- MiMo-V2.6-Pro and Step 5 Preview are level on quality (64.3 vs 64.4).
- MiMo-V2.6-Pro is stronger in agents & tools, composite, reasoning.
- Step 5 Preview is stronger in knowledge, long context, coding, multimodal.
- MiMo-V2.6-Pro is 2.6× cheaper ($0.548 vs $1.43 per 1M blended).
- Step 5 Preview streams 1.5× faster (83 vs 54 tokens per second).
| Metric | MiMo-V2.6-Pro | Step 5 Preview |
|---|---|---|
| BenchLeader Index | 64.3 | 64.4 |
| Agents & tools score | 55.1 | – |
| Composite score | 84.8 | 81.7 |
| Knowledge score | 66.8 | 70.5 |
| Long context score | 69.1 | 70.1 |
| Reasoning score | 88.8 | 78.6 |
| Coding score | – | 68.8 |
| Multimodal score | – | 60.0 |
| Blended price $/M | $0.548 | $1.43 |
| Output speed | 54 tok/s | 83 tok/s |
| Time to first answer | 39.8 s | 27.7 s |
| Context window | 1.0M | 1M |
| SciCode | – | 58.9% |
| AA Intelligence Index | 46.3 | 43.7 |
| AA-LCR | 86.3% | 88.3% |
| MMMU-Pro | – | 76.4% |
| AA-Omniscience | 8.4 | 16.4 |
| Humanity's Last Exam (AA) | 49.4% | 46.5% |
| SciCode (AA) | 60.9% | 58.9% |
| Terminal-Bench 2.1 (Vals) | 67.8% | – |
| Vals Index | 59.7 | – |
| CritPt | 26.6% | 20.9% |
| GDPval (AA) | 58.7% | 53.3% |
| Code Migration | 43.0% | – |
| Excel Modeling Benchmark | 62.9% | – |
| Finance Agent v2 | 58.3% | – |
| Harvey's Legal Agent Benchmark | 10.8% | – |
| Legal Research Bench | 47.1% | – |
| Terminal-Bench Science | 2.9% | – |
| Vibe Code Bench v1.1 | 85.2% | – |
| Terminal-Bench 4.0 (AA) | 34.9% | 33.3% |
| AutomationBench | 58.6% | 51.0% |
| GDP.pdf | 19.2% | 14.8% |
| MLCR | – | 16.7% |
| AA-Omniscience: accuracy | 34.9% | 41.5% |
| AA-Omniscience: non-hallucination | 59.4% | 57.0% |
| AA-Briefcase | 1522 | 1432 |
Data as of 2026-09-23. Best configuration of each model; every score links to its source on the model pages.
MiMo-V2.6-Pro vs Step 5 Preview: questions
- Is MiMo-V2.6-Pro better than Step 5 Preview?
- MiMo-V2.6-Pro and Step 5 Preview are level on quality (64.3 vs 64.4). The BenchLeader Index combines every independent quality benchmark; Step 5 Preview is ahead overall as of 2026-09-23, but check the category scores for your use.
- Which is cheaper, MiMo-V2.6-Pro or Step 5 Preview?
- MiMo-V2.6-Pro is cheaper: $0.548 against $1.43 per million tokens, blended at three input tokens per output token.
- Which is faster, MiMo-V2.6-Pro or Step 5 Preview?
- Step 5 Preview streams faster: 83 against 54 output tokens per second.
- Which has the larger context window?
- MiMo-V2.6-Pro accepts more context: 1.0M against 1M tokens.