1. X
  2. Fireside Alpha
Log inSign up
Fireside Alpha
546 posts
user avatar
Fireside Alpha
@firesidealpha
Summary and synthesis of the best business, technology, and consumer conversations
United States
firesidealpha.substack.com
Joined June 2026
101
Following
5,072
Followers
RepliesRepliesArticlesArticlesMediaMedia
Terms·Privacy·Cookies·Accessibility·Ads Info·© 2026 X Corp.
Don't miss what's happening
People on X are the first to know.
Log inSign up

New to X?

Sign up now to get your own personalized timeline!

Create account

By signing up, you agree to the Terms of Service and Privacy Policy, including Cookie Use.

  • Pinned
    user avatar
    Fireside Alpha
    @firesidealpha
    Jun 25
    Steve Mandel (Lone Pine) sat down on Joys of Compounding to discuss the building of his fund. Mandel spent thirty years protecting one rare skill, judging what a business is worth years out, which he thinks is only getting more valuable. Lessons learned w/ more in the article:
    user avatar
    Fireside Alpha
    @firesidealpha
    Jun 24
    Julian Robertson and five of his Tiger analysts were interviewed in 1991 before the cubs scattered. The takeaway is that Tiger was never one great picker. It was a team and a room wired for ground truth. Here's what they actually did and what remains true today: 1/ The edge
    51K
  • user avatar
    Fireside Alpha
    @firesidealpha
    27m
    Dylan Patel of SemiAnalysis says speed is the moat in AI inference, and getting there runs through new compute (Groq/Cerebras), KV-cache offload, and networking optimization (Aria). "Most of the infrastructure is pretty optimized for high throughput, I would say, but more and
    00:00
    user avatar
    Fireside Alpha
    @firesidealpha
    2h
    Article cover image
    Article
    SemiAnalysis & Aria Networks: The 100x Token-Cost Gap Is a Networking Problem
    Aria CEO Mansour Karam says the “one general-purpose cluster for everything” era is on its way out. Serving a model, he says, is a totally different business from training one. The price of the same...
    2.1K
  • user avatar
    Fireside Alpha
    @firesidealpha
    1h
    Sam Altman calls Google (and other big companies) sclerotic and set in their ways and that they should have been the runaway winner in AI. "Maybe between 2016 and 2018 we had to get really lucky, and it required a lot of great belief. But then by 2019, certainly by 2020, we
    00:00
    01:04
    user avatar
    Fireside Alpha
    @firesidealpha
    23h
    Sam Altman reveals he deliberately got himself addicted to TikTok while building Sora, then deleted it because it was too powerful like a drug. "I deleted TikTok because it was just too powerful. Here's a crazy thing that happened. When we were building the Sora app, I made
    547
  • user avatar
    Fireside Alpha
    @firesidealpha
    2h
    Article cover image
    Article
    SemiAnalysis & Aria Networks: The 100x Token-Cost Gap Is a Networking Problem
    Aria CEO Mansour Karam says the “one general-purpose cluster for everything” era is on its way out. Serving a model, he says, is a totally different business from training one. The price of the same...
    1.9K
  • user avatar
    Fireside Alpha
    @firesidealpha
    5h
    Sam Altman says OpenAI shouldn't have existed but got lucky and that Google should have run away with the AI race but got sclerotic and set in their ways. "Maybe between 2016 and 2018 we had to get really lucky, and it required a lot of great belief. But then by 2019, certainly
    00:00
    01:04
    user avatar
    Fireside Alpha
    @firesidealpha
    23h
    Sam Altman reveals he deliberately got himself addicted to TikTok while building Sora, then deleted it because it was too powerful like a drug. "I deleted TikTok because it was just too powerful. Here's a crazy thing that happened. When we were building the Sora app, I made
    4K