# GPT-5 Pro vs Grok Build 0.1

> GPT-5 Pro is the stronger model overall, scoring 46.4 to 36.4 on the Noometry Index. Grok Build 0.1 costs 33× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.

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

## Summary

- The widest gap is in reasoning, where GPT-5 Pro leads 38.9 to 32.2.
- Grok Build 0.1 is cheaper at $1 / $2 per million input/output tokens, against $15 / $120 for GPT-5 Pro.
- GPT-5 Pro accepts more context: 400K tokens versus 256K.

## Snapshot

| | GPT-5 Pro | Grok Build 0.1 |
|---|---|---|
| Provider | OpenAI | xAI |
| Noometry Index | 46.4 | 36.4 |
| Rank | 64 | 216 |
| Context | 400K | 256K |
| Input $/M | $15 | $1 |
| Output $/M | $120 | $2 |
| Weights | Proprietary | Proprietary |

## Coding

- GPT-5 Pro: 44.0 (#80)
- Grok Build 0.1: 43.1 (#91)

| Benchmark | GPT-5 Pro | Grok Build 0.1 |
|---|---|---|
| SciCode | — | 50.2% |
| WeirdML | 60.4% | — |
| AlgoTune | 1.31 | — |

## Agentic & Tool Use

- GPT-5 Pro: —
- Grok Build 0.1: 22.7 (#129)

| Benchmark | GPT-5 Pro | Grok Build 0.1 |
|---|---|---|
| GBAEval | — | 2.4% |

## Reasoning

- GPT-5 Pro: 38.9 (#62)
- Grok Build 0.1: 32.2 (#77)

| Benchmark | GPT-5 Pro | Grok Build 0.1 |
|---|---|---|
| ARC-AGI-2 | 18.3% | — |
| SimpleBench | 61.6% | — |
| Kagi LLM Benchmark | 76.8% | — |
| ARC-AGI-1 | 70.2% | — |
| CritPt | — | 9.1% |
| EnigmaEval | 18.8% | — |
| Epoch Capabilities Index | 150.28 | — |

## Math

- GPT-5 Pro: 48.5 (#63)
- Grok Build 0.1: —

| Benchmark | GPT-5 Pro | Grok Build 0.1 |
|---|---|---|
| FrontierMath (Tiers 1-3) | 55.8% | — |
| FrontierMath Tier 4 | 19.5% | — |
| FrontierMath Tier 4 (v1) | 14.6% | — |

## Knowledge

- GPT-5 Pro: 56.7 (#42)
- Grok Build 0.1: —

| Benchmark | GPT-5 Pro | Grok Build 0.1 |
|---|---|---|
| Humanity's Last Exam | 31.6% | — |

## FAQ

### Is GPT-5 Pro better than Grok Build 0.1?

GPT-5 Pro is the stronger model overall, scoring 46.4 to 36.4 on the Noometry Index. Grok Build 0.1 costs 33× less per token, which makes it the better buy when GPT-5 Pro's lead doesn't matter for your workload.

### Which is cheaper, GPT-5 Pro or Grok Build 0.1?

Grok Build 0.1 is cheaper. It lists at $1 per million input tokens and $2 per million output tokens; GPT-5 Pro lists at $15 and $120.

### Is GPT-5 Pro or Grok Build 0.1 better for coding?

They score almost the same on coding (44.0 vs 43.1); test both on your own repository before choosing.

### Which has the bigger context window?

GPT-5 Pro does, with 400K tokens against 256K.

### How many benchmarks do GPT-5 Pro and Grok Build 0.1 share?

0 benchmarks have published results for both models. GPT-5 Pro has 12 scored results on Noometry and Grok Build 0.1 has 3.