AI News. April 20, 2026

xAI released Grok 4.3 beta to SuperGrok and X Premium+ users​​​​​​​​​​​​​​​​

TestingCatalog News 🗞@testingcatalog

Grok 4.3 (beta) is now available to SuperGrok and X Premium+ users! Testing time 👀

5:54 AM · Apr 19, 2026 · 20.1K Views

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14 Replies · 21 Reposts · 462 Likes

Supra unveiled SupraOS, a self-hosted blockchain-enforced AI agent management platform, with alpha launching April 20 limited to 100 seats

Josh Tobkin (SUPRA)@JoshuaTobkin

Introducing SupraOS. It's basically blockchain enforced AI agent management with a slickkk UI. And you self-host it like OpenClaw with end to end encryption (you own all your data). Alpha Launch starts tomorrow 4/20, only 100 seats. Public release maybe a week later. Stay

2:36 PM · Apr 19, 2026 · 24.1K Views

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69 Replies · 178 Reposts · 431 Likes

Vultisig SDK launched to let AI agents move capital via MPC without handing over seed phrases

Vultisig@vultisig

AI agents are useless if they can't move capital. But giving an agent your seed phrase is digital suicide. The Vultisig SDK lets you give your AI agent secure capital through MPC. The agent proposes the trade; you keep the signing power.

1:13 PM · Apr 19, 2026 · 966 Views

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6 Reposts · 31 Likes

Coinbase testing AI agents in Slack and email modeled after Fred Ehrsam and Balaji Srinivasan

Brian Armstrong@brian_armstrong

Coinbase is testing AI agents that show up in slack/email at work, just like any human teammate. To start we're shipping two which are modeled after legendary former Coinbase employees, @FEhrsam and @balajis. (Who brutally frame mogged who in this matchup?) Soon, it will be easy

6:07 PM · Apr 18, 2026 · 363K Views

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311 Replies · 178 Reposts · 1.76K Likes

Drafted launched a free tool that turns any drawn shape into generated house plans with 3D models​​​​​​​​​​​​​​​​

Drafted@DraftedAI

Outline any shape and Drafted turns it into a real house plan. 🏠 It's a new way to explore the different layouts and room configurations that are possible within your space. Here's how it works 👇

5:18 PM · Apr 19, 2026 · 1.09M Views

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64 Replies · 189 Reposts · 2.38K Likes

Hermes Agent hit 100,000 stars on GitHub

Teknium 🪽@Teknium

Hermes Agent just hit 100,000 stars on GitHub!!! Thank you everyone!!

5:42 AM · Apr 19, 2026 · 314K Views

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217 Replies · 161 Reposts · 2.78K Likes