# Grok Build 0.1 vs o3-pro

> o3-pro is the stronger model overall, scoring 42.9 to 36.4 on the Noometry Index. Grok Build 0.1 costs 28× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.

- Canonical page: https://noometry.com/compare/grok-build-0-1-vs-o3-pro
- Last updated: 2026-10-10
- Shared benchmarks: 0

## Summary

- The widest gap is in coding, where o3-pro leads 55.5 to 43.1.
- Grok Build 0.1 is cheaper at $1 / $2 per million input/output tokens, against $20 / $80 for o3-pro.
- Grok Build 0.1 accepts more context: 256K tokens versus 200K.

## Snapshot

| | Grok Build 0.1 | o3-pro |
|---|---|---|
| Provider | xAI | OpenAI |
| Noometry Index | 36.4 | 42.9 |
| Rank | 216 | 105 |
| Context | 256K | 200K |
| Input $/M | $1 | $20 |
| Output $/M | $2 | $80 |
| Weights | Proprietary | Proprietary |

## Coding

- Grok Build 0.1: 43.1 (#91)
- o3-pro: 55.5 (#24)

| Benchmark | Grok Build 0.1 | o3-pro |
|---|---|---|
| Aider Polyglot | — | 84.9% |
| SciCode | 50.2% | — |
| WeirdML | — | 58.2% |

## Agentic & Tool Use

- Grok Build 0.1: 22.7 (#129)
- o3-pro: —

| Benchmark | Grok Build 0.1 | o3-pro |
|---|---|---|
| GBAEval | 2.4% | — |

## Reasoning

- Grok Build 0.1: 32.2 (#77)
- o3-pro: 23.8 (#171)

| Benchmark | Grok Build 0.1 | o3-pro |
|---|---|---|
| ARC-AGI-2 | — | 4.9% |
| Kagi LLM Benchmark | — | 72.1% |
| ARC-AGI-1 | — | 59.3% |
| CritPt | 9.1% | — |
| DTBench | — | 86.9% |
| LMCA | — | 38.5% |
| Epoch Capabilities Index | — | 147.42 |

## Knowledge

- Grok Build 0.1: —
- o3-pro: 29.5 (#238)

| Benchmark | Grok Build 0.1 | o3-pro |
|---|---|---|
| Confabulations | — | 14.2% |
| Vectara Hallucination Rate | — | 23.3% |

## Long Context

- Grok Build 0.1: —
- o3-pro: 72.2 (#1)

| Benchmark | Grok Build 0.1 | o3-pro |
|---|---|---|
| Fiction.LiveBench | — | 97.2% |

## Writing & Preference

- Grok Build 0.1: —
- o3-pro: 57.1 (#133)

| Benchmark | Grok Build 0.1 | o3-pro |
|---|---|---|
| Short-Story Creative Writing | — | 84.4% |

## FAQ

### Is Grok Build 0.1 better than o3-pro?

o3-pro is the stronger model overall, scoring 42.9 to 36.4 on the Noometry Index. Grok Build 0.1 costs 28× less per token, which makes it the better buy when o3-pro's lead doesn't matter for your workload.

### Which is cheaper, Grok Build 0.1 or o3-pro?

Grok Build 0.1 is cheaper. It lists at $1 per million input tokens and $2 per million output tokens; o3-pro lists at $20 and $80.

### Is Grok Build 0.1 or o3-pro better for coding?

o3-pro scores higher on coding benchmarks: 55.5 versus 43.1 in the Noometry coding category.

### Which has the bigger context window?

Grok Build 0.1 does, with 256K tokens against 200K.

### How many benchmarks do Grok Build 0.1 and o3-pro share?

0 benchmarks have published results for both models. Grok Build 0.1 has 3 scored results on Noometry and o3-pro has 12.