Elon Musk
@elonmusk
Try the new Grok 4.20 Heavy. It’s a major upgrade.
tetsuo@tetsuoai· Feb 18, 2026🚨Grok 4.20 Heavy dropped for Heavy subscribers.
Big change under the hood: it now runs as a full team of 16 specialized agents that collaborate in real time on every single answer. All on the grok-4.20 architecture.
Here's the crew:
Grok - leads everything, coordinates and
06:49 PM · February 18, 2026 · 5.7M views
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