---
title: "Elon Musk confirms xAI used OpenAI models to train Grok"
slug: "elon-musk-confirms-xai-used-openai-models-to-train-grok"
date: 2026-04-30
category: tech-pub
tags: [openai]
language: en
sources_count: 1
featured: false
publisher: AInauten News
url: https://news.ainauten.com/en/story/elon-musk-confirms-xai-used-openai-models-to-train-grok
---

# Elon Musk confirms xAI used OpenAI models to train Grok

**Published**: 2026-04-30 | **Category**: tech-pub | **Sources**: 1

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## TL;DR

In a California federal court, Elon Musk testified that his AI startup xAI used OpenAI's models to improve Grok.

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## Summary

In a California federal court, Elon Musk testified that his AI startup xAI used OpenAI's models to improve Grok. The practice in question is model distillation — where a larger 'teacher' model passes knowledge to a smaller 'student' model. While common inside individual companies, smaller AI labs sometimes use it to mimic the performance of bigger competitors. Notable: Musk was an OpenAI co-founder before launching xAI.

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## Why it matters

In a California federal court, Elon Musk testified that his AI startup xAI used OpenAI's models to improve Grok.

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## Key Points

- In a California federal court, Elon Musk testified that his AI startup xAI used OpenAI's models to improve Grok.
- The practice in question is model distillation — where a larger 'teacher' model passes knowledge to a smaller 'student' model.
- While common inside individual companies, smaller AI labs sometimes use it to mimic the performance of bigger competitors.
- Notable: Musk was an OpenAI co-founder before launching xAI.

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## Nauti's Take

Distillation is a well-known technique, and Musk's testimony brings welcome transparency to an otherwise murky practice — net positive for the industry. It gets dicey when a lab specifically taps a competitor's model to mimic its performance. Musk's OpenAI co-founder past makes the fight extra spicy. Takeaway for other AI builders: document training data and methods cleanly, or expect the next lawsuit circus.

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## FAQ

**Q:** What is Elon Musk confirms xAI used OpenAI models to train Grok about?

**A:** In a California federal court, Elon Musk testified that his AI startup xAI used OpenAI's models to improve Grok.

**Q:** Why does it matter?

**A:** In a California federal court, Elon Musk testified that his AI startup xAI used OpenAI's models to improve Grok.

**Q:** What are the key takeaways?

**A:** In a California federal court, Elon Musk testified that his AI startup xAI used OpenAI's models to improve Grok.. The practice in question is model distillation — where a larger 'teacher' model passes knowledge to a smaller 'student' model.. While common inside individual companies, smaller AI labs sometimes use it to mimic the performance of bigger competitors.

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## Related Topics

- [openai](https://news.ainauten.com/en/tag/openai)

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## Sources

- [Elon Musk confirms xAI used OpenAI’s models to train Grok](https://www.theverge.com/ai-artificial-intelligence/921546/elon-musk-xai-openai-trial-model-distillation) - The Verge AI

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## About This Article

This article is a synthesis of 1 sources, curated and summarized by AInauten News. We aggregate AI news from trusted sources and provide bilingual (German/English) coverage.

**Publisher**: [AInauten](https://www.ainauten.com) | **Site**: [news.ainauten.com](https://news.ainauten.com)

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*Last Updated: 2026-05-01*