Elon Musk revealed on Sunday that the highly anticipated Grok 4 update, known as Grok 4.20, will be arriving in just a few weeks. This update is expected to bring significant performance enhancements and introduce new capabilities for the AI model. The Grok 4 update will be one of the fastest updates rolled out by Musk's xAI company, following the release of Grok 4.1 in November.
Grok 4 Update: What We Know so Far?

The Grok 4.20 model, which has already been tested in stealth mode on the Alpha Arena platform, promises to deliver outstanding results. Here are the key highlights:
- Faster AI Performance: Grok 4.20 outperformed other AI models, including GPT-5.1 and Gemini 3 Pro, in an AI competition on Alpha Arena.
- Stock Trading Simulation: The model was tested on Alpha Arena, a platform for stock trading simulation. Each AI model was given $10,000 (around Rs. 9,00,000) and two weeks to make a profit.
- 12% Profit: Grok 4.20 made a 12% profit on its initial investment, while other models, like Google’s Gemini 3 Pro and OpenAI’s GPT models, ended up in the red.
- Improved Reasoning: The new update is expected to bring better reasoning abilities and faster data processing, especially when handling real-world tasks.
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Elon Musk confirmed the release timeline on X (formerly Twitter), stating, “Grok 4.20 is coming out in 3 or 4 weeks.” This means users can expect the new update by the end of December or early January. It will be one of the quickest updates from xAI so far.
As for Grok 4.20's specifications, much is still unknown. The model’s full capabilities and features will be revealed only after its official release. For now, it’s clear that this update will bring exciting advancements in AI technology.
Stay tuned for more details as the Grok 4.20 update approaches!
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