Grok 4.5 vs Mimo v2 Pro
Grok 4.5 
Mimo v2 Pro Verdict
- Grok 4.5 leads on quality: 63.5 vs 60.6.
- Grok 4.5 is stronger in coding, composite, human preference, knowledge, long context, multimodal, reasoning.
- Mimo v2 Pro is stronger in agents & tools, instruction following.
- They cost about the same ($3.00 per 1M blended).
| Metric | Grok 4.5 | Mimo v2 Pro |
|---|---|---|
| BenchLeader Index | 63.5 | 60.6 |
| Agents & tools score | 58.6 | 69.4 |
| Coding score | 59.8 | 54.7 |
| Composite score | 66.2 | 65.2 |
| Human preference score | 67.2 | 64.5 |
| Knowledge score | 76.2 | 66.3 |
| Long context score | 66.2 | 60.5 |
| Multimodal score | 64.9 | – |
| Reasoning score | 69.2 | 65.2 |
| Instruction following score | – | 67.5 |
| Blended price $/M | $3.00 | $3.00 |
| Output speed | 52 tok/s | – |
| Time to first answer | 13.6 s | – |
| Context window | 500k | 1.0M |
| SimpleBench | 70.0% | – |
| WeirdML | 46.4% | – |
| APEX-Agents | 34.2% | – |
| FrontierCode | 42.4% | – |
| Epoch Capabilities Index | 153.9 | – |
| LMArena Text | 1471 | 1448 |
| LMArena Hard Prompts | 1495 | 1476 |
| LMArena Coding | 1523 | 1503 |
| LMArena WebDev | 1556 | 1433 |
| LMArena Vision | 1291 | – |
| LMArena Agent | 3.9 | – |
| LiveBench | 75.8% | – |
| LiveBench Reasoning | 87.2% | – |
| LiveBench Coding | 68.6% | – |
| LiveBench Agentic Coding | 56.5% | – |
| LiveBench Mathematics | 90.8% | – |
| LiveBench Data Analysis | 73.0% | – |
| LiveBench Language | 82.8% | – |
| AA Intelligence Index | 39.1 | 28.6 |
| IFBench | – | 68.8% |
| AA-LCR | 79.3% | 68.3% |
| MMMU-Pro | 80.4% | – |
| AA-Omniscience | 25.3 | 4.6 |
| Terminal-Bench Hard | – | 40.9% |
| GPQA Diamond (AA) | 93.1% | 87.0% |
| Humanity's Last Exam (AA) | 42.7% | 30.4% |
| SciCode (AA) | 55.0% | – |
| τ²-Bench Telecom (AA) | – | 95.0% |
| Kagi LLM Benchmark | 83.5% | – |
Data as of 2026-09-10. Best configuration of each model; every score links to its source on the model pages.
Grok 4.5 vs Mimo v2 Pro: questions
- Is Grok 4.5 better than Mimo v2 Pro?
- Grok 4.5 leads on quality: 63.5 vs 60.6. The BenchLeader Index combines every independent quality benchmark; Grok 4.5 is ahead overall as of 2026-09-10, but check the category scores for your use.
- Is Grok 4.5 better than Mimo v2 Pro for coding?
- Grok 4.5 scores higher in coding (60 vs 55 on the category index, where 50 is average).
- Is Grok 4.5 better than Mimo v2 Pro for agentic tasks?
- Mimo v2 Pro scores higher in agentic tasks (69 vs 59 on the category index, where 50 is average).
- Which is cheaper, Grok 4.5 or Mimo v2 Pro?
- Grok 4.5 is cheaper: $3.00 against $3.00 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 500k tokens.