xAI, unknown

# Grok 4 Heavy

> Grok 4 Heavy by xAI, released July 2025. 1 published benchmark result. Scores, sources and comparisons.
- Canonical page: https://noometry.com/models/grok-4-heavy
- Last updated: 2026-10-10
- Title: Grok 4 Heavy Benchmarks, Price & Rank (October 2026)

Grok 4 Heavy by xAI has 1 published benchmark result on Noometry, not yet enough to be ranked.

Last verified October 10, 2026

## Specifications

- **Noometry rank:** Unranked
- **Index score:** Not ranked
- **Evidence:** 1 results
- **Provider:** [xAI](https://noometry.com/providers/xai)
- **Released:** July 10, 2025
- **Weights:** Unknown
- **Reasoning:** Unknown
- **Context window:** —
- **Max output:** —
- **Input price:** Not listed
- **Output price:** Not listed
- **Blended price:** Not listed
- **Output speed:** Not measured
- **Value:** Not ranked
- **Knowledge cutoff:** Unknown

Sponsored placements are available on pages like this one. [Advertise on Noometry](https://noometry.com/advertise)

## Benchmark results

Every published result we track, with its source. Bold rows are the ones used for ranking; where several exist we prefer independent runs over self-reported numbers.

### Math

Grok 4 Heavy Math benchmark results
| Benchmark | Score | Position | Setting | Source | Date |
| --- | --- | --- | --- | --- | --- |
| [FrontierMath Tier 4 (v1)](https://noometry.com/benchmarks/frontiermath-tier-4-v1) | 2.1% | #45 of 55, top 82% |  | [Epoch AI](https://epoch.ai/benchmarks) | 2025-10-09 |

## Compare Grok 4 Heavy

-   [Grok 4 Heavy vs GPT-6 Astra](https://noometry.com/compare/gpt-6-astra-vs-grok-4-heavy)
-   [Grok 4 Heavy vs Claude Fable 5.1](https://noometry.com/compare/claude-fable-5-1-vs-grok-4-heavy)
-   [Grok 4 Heavy vs Claude Opus 5.5](https://noometry.com/compare/claude-opus-5-5-vs-grok-4-heavy)
-   [Grok 4 Heavy vs Claude Opus 5](https://noometry.com/compare/claude-opus-5-vs-grok-4-heavy)
-   [Grok 4 Heavy vs Claude Fable 5](https://noometry.com/compare/claude-fable-5-vs-grok-4-heavy)
-   [Grok 4 Heavy vs GPT-6.1 Sol](https://noometry.com/compare/gpt-6-1-sol-vs-grok-4-heavy)
-   [Grok 4 Heavy vs Gemini 3.8 Flash](https://noometry.com/compare/gemini-3-8-flash-vs-grok-4-heavy)
-   [Grok 4 Heavy vs Kimi K3](https://noometry.com/compare/grok-4-heavy-vs-kimi-k3)
-   [Grok 4 Heavy vs Qwen3.8 Max](https://noometry.com/compare/grok-4-heavy-vs-qwen3-8-max)
-   [Grok 4 Heavy vs GLM-5.3](https://noometry.com/compare/glm-5-3-vs-grok-4-heavy)
-   [Grok 4 Heavy vs Muse Spark 1.3](https://noometry.com/compare/grok-4-heavy-vs-muse-spark-1-3)
-   [Grok 4 Heavy vs DeepSeek V4 Pro](https://noometry.com/compare/deepseek-v4-pro-vs-grok-4-heavy)
-   [Grok 4 Heavy vs MiMo-V2.6-Pro](https://noometry.com/compare/grok-4-heavy-vs-mimo-v2-6-pro)

## Other xAI models

-   [Grok 4.6](https://noometry.com/models/grok-4-6)56.9
-   [Grok 4.5](https://noometry.com/models/grok-4-5)55.0
-   [Grok 4.7](https://noometry.com/models/grok-4-7)53.1
-   [Grok 4.20 (Non-Reasoning)](https://noometry.com/models/grok-4-20)48.6
-   [Grok 4](https://noometry.com/models/grok-4)48.1
-   [Grok 4.20 Multi-Agent](https://noometry.com/models/grok-4-20-multi-agent)46.2
-   [Grok 4.3](https://noometry.com/models/grok-4-3)43.8
-   [Grok 4.1](https://noometry.com/models/grok-4-1)41.5

## Frequently asked questions

### How good is Grok 4 Heavy?

Grok 4 Heavy by xAI has 1 published benchmark result on Noometry, not yet enough to be ranked.

### Is Grok 4 Heavy open source?

xAI has not published downloadable weights for Grok 4 Heavy that we can confirm.

### Cite this page

Noometry. (2026). Grok 4 Heavy benchmarks and pricing. Retrieved October 10, 2026, from https://noometry.com/models/grok-4-heavy

Quote Noometry with a link back to this page. It is also available in [Markdown](https://noometry.com/md/models/grok-4-heavy.md).