# o1-pro vs Phi-1.5

> o1-pro has enough public results to be ranked (#264); Phi-1.5 does not yet, so treat this comparison as directional.

- Canonical page: https://noometry.com/compare/o1-pro-vs-phi-1-5
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- Phi-1.5 has downloadable open weights; the other is API-only.

## Snapshot

| | o1-pro | Phi-1.5 |
|---|---|---|
| Provider | OpenAI | Microsoft |
| Noometry Index | 31.2 | — |
| Rank | 264 | — |
| Context | 200K | — |
| Input $/M | $150 | — |
| Output $/M | $600 | — |
| Weights | Proprietary | Open |

## Reasoning

- o1-pro: 20.2 (#223)
- Phi-1.5: —

| Benchmark | o1-pro | Phi-1.5 |
|---|---|---|
| ARC-AGI-1 | 23.3% | — |
| EnigmaEval | 6.1% | — |
| Epoch Capabilities Index | — | 90.82 |
| HellaSwag | — | 47.6% |
| WinoGrande | — | 73.4% |

## Knowledge

- o1-pro: 29.3 (#227)
- Phi-1.5: —

| Benchmark | o1-pro | Phi-1.5 |
|---|---|---|
| Humanity's Last Exam | 8.1% | — |
| ARC (AI2) Challenge | — | 44.4% |
| BoolQ | — | 75.8% |
| MMLU | — | 37.6% |
| OpenBookQA | — | 37.2% |

## FAQ

### Is o1-pro better than Phi-1.5?

o1-pro has enough public results to be ranked (#264); Phi-1.5 does not yet, so treat this comparison as directional.

### How many benchmarks do o1-pro and Phi-1.5 share?

0 benchmarks have published results for both models. o1-pro has 3 scored results on Noometry and Phi-1.5 has 7.