
ishan deshpande
694 posts

ishan deshpande
@ishand
talent engineering @xai | https://t.co/cShylixemj | cs @uofillinois









The Grok 4.20 Beta shows three major improvements over Grok 4: ➤ Our lowest ever hallucination rate on the AA-Omniscience evaluation. When Grok did not know the answer, it hallucinated an incorrect answer 22% of the time - this is the lowest hallucination rate of any model we have tested, topping Claude Haiku 4.5 (25%) ➤ Top scores for instruction following and prompt adherence. On IFBench, Grok 4.20 takes the #1 spot with 82.9% - a +29.2 point increase on Grok 4 ➤ Leading speed for its intelligence. At 265 tokens per second output speed on xAI’s API, Grok 4.20 is significantly faster than its peer and over 2x the output speed seen from Grok 4.1 Fast Congratulations to @xai and @elonmusk on the 4.20 Beta 0309 launch!




Personal story: I applied to xAI in 2023 when it was founded and got rejected after an interview round. I went back to honing my skills. In 2025, xAI reached out to me, and I was fortunate to get an offer. Now, 8 months in, I can confidently say: this is the best place to do your life’s work. Talented people thrive and shine here. Join us to understand the universe 🚀




I’m proud to be joining SpaceX and xAI with @milichab It has become clear that software is changing fundamentally. More and more, people can shape the tools they use directly, and the ceiling of what can be built keeps rising. What makes xAI special is the scale of its ambition: to build from first principles all the way out to the stars. I’m especially grateful to work on products that expand human agency and freedom. That mission is deeply personal to me. My family came to the United States fleeing communism, and the belief that freedom should be part of the next generation of the internet has driven me every day since Andrew and I started Skiff. Now, we get to work on intelligence, understanding, and freedom on a universal scale.




