Rephonic
Artwork for Sources

Sources with Alex Heath

Alex Heath
Artificial Intelligence
Silicon Valley
Prediction Markets
AI Video Technology
Openai
Google
Powerpoint
Substack
Meta
Polymarket
Deepfakes
Roblox
Anthropic
Mercury
AI Companionship
Apple
Social Media
Market Trends
Figma
Startups

Sources features candid conversations with the leaders shaping what’s next in AI and the broader tech industry. Host Alex Heath has covered Silicon Valley as a journalist for more than a decade. He talks with founders, CEOs, and technologists about the news of the moment, the bets they’re making, and what they see coming next.

PublishesTwice weeklyEpisodes55Foundeda year ago
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Artwork for Sources

Latest Episodes

Matan Grinberg is the co-founder and CEO of Factory, a $5 billion AI coding startup building Droid agents to automate the engineering process. He tells me how AI is changing the job of a software engineer and why Factory is betting on a future with m... more

Microsoft CEO Satya Nadella thinks AI agents will create a market “orders of magnitude” bigger than the cloud.

I recently sat down with him in Seattle for the unveiling of the new Copilot.

We discuss Autopilot, Microsoft's new OpenClaw-based agent ... more

Salesforce CEO Marc Benioff and I discuss his framemogging at Dreamforce, the state of the SaaSpocalypse, and how Slack is more important than ever in the age of AI.

We also discuss the resurgence of San Francisco, his role in the recent acquisition... more

Tuhin Srivastava is the CEO and co-founder of Baseten, an AI cloud startup recently valued at $13 billion. He tells me why every company will want to own its AI and what’s driving the explosion in demand for inference.

We discuss the rise of agents... more

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Recent Guests

Marc Benioff
CEO of Salesforce
Salesforce
Episode: Marc Benioff on the AI boom, SaaSpocalypse, and future of Slack
Tuhin Bhattacharyya
CEO of Baseten
Baseten
Episode: Baseten’s CEO on why every company will want to own its AI
Mark Zuckerberg
CEO of Meta, discussing Muse and AI strategy
Meta
Episode: Mark Zuckerberg on Muse, Meta's biggest AI bet yet
Sam Altman
CEO of OpenAI
OpenAI
Episode: Trailer: Sam Altman on the Sources Podcast
Dan Shipper
CEO of Every
Every
Episode: Meet the most AI-pilled CEO on Earth
Quinten Farmer
Creator of Tolan AI, founder of Portola/Tolan
Tolan (formerly Portola)
Episode: This AI will push back if you're rude to it
Jon Steinback
Founder of Marker, an AI writing tool built around the creative process
Marker
Episode: The AI writing app fighting AI slop
Jason Yuan
Founder of Hivemind, consumer AI product
Hivemind
Episode: This AI tells you what your friends won't
Andy Konwinski
Co-founder of Databricks and Perplexity
Laude (guest)
Episode: The billionaire paying AI researchers to stay out of Big Tech

Hosts

Ellis Hamburger
Host with experience guiding interviews and founder-mentorship for today's hottest AI startups.
Alex Heath
Co-host and tech reporter with access to insiders across Vox Media and beyond.

Reviews

4.4 out of 5 stars from 82 ratings
  • Please fix your microphones

    Hi guys, I really do love your show but you’re popping so much on your mics that it’s kinda annoying and for TECH guys you should have that figured out so maybe talk over the mic or pull them away a little bit or make them not so hot, but it’s just all your p’s that are really popping. Keep up the great work and thank you so much 😊

    This review was spoken in please forgive any typos

    Apple Podcasts
    4
    lmxica
    United States5 months ago
  • Douchemaxxing

    It’s like they bottled the SF AI super pilled Bro.

    Apple Podcasts
    1
    davecheney
    Australia7 months ago
  • Started great and nose dived into corporate shill territory

    This is the first review I’ve ever left on a podcast. I’m a big fan of some of Alex’s previous interviews for the verge, so I thought I’d give this show a chance. As the title suggests, the first few interviews were pretty great. I really enjoyed the interview with Carl Pei.

    But since then it feels like this has become a place for corporations in hot water to come in and take control of the narrative or shill their terrible ideas.

    But also what did I expect from a podcast called access?

    Apple Podcasts
    1
    Michaelthatsit
    United States7 months ago
  • Quickly becoming one of my fave pods

    Alex and Ellis actually understand the companies they cover. They also enjoy technology unlike other pod hosts - and their banter and takes are worth listening to!

    Apple Podcasts
    5
    j g randall
    United States8 months ago
  • Too much preamble, interviews are weak and come off as ads

    Too much preamble, interviews are weak and come off as ads. The latest episode is literally 33 min before the guest interview even starts. The hosts swear like middle schoolers, as in their diction is clumsy and does not add the emphasis they think it does.

    Apple Podcasts
    1
    slapsh0t11
    United States8 months ago

Listeners Say

Key themes from listener reviews, highlighting what works and what could be improved about the show.

Listeners note strong insider access and practical takeaways for product and policy decisions.
Some reviews call out high-value guests and candid industry critiques.
A few critical comments highlight mic quality and pre-interview pacing as areas for improvement.
Positive feedback frequently cites insightful conversations about AI governance and startup tooling.

Chart Rankings

How this podcast ranks in the Apple Podcasts, Spotify and YouTube charts.

Talking Points

Recent interactions between the hosts and their guests.

Marc Benioff on the AI boom, SaaSpocalypse, and future of Slack
Q: Why did Salesforce back Anthropic when you did?
Marc explains that the investment was driven by the need to diversify AI partnerships after constraints with OpenAI, and to gain exposure to a range of capable model companies, ultimately believing Anthropic could be a strong, long-term partner with a healthy alignment to Salesforce's AI strategy.
Baseten’s CEO on why every company will want to own its AI
Q: What is AI inference and why is Baseten focused on it?
Inference is the process of serving models in production, with Baseten providing the full software stack (infrastructure, orchestration, and higher-level primitives) to run models reliably and at scale, not just raw compute, which differentiates Baseten from pure cloud providers.
Prediction markets are invading everything
Q: Could writers eventually create their own markets for their coverage areas on Substack, and what would that mean for the platform?
The guest shows interest in writers having the ability to craft markets around their reporting, suggesting it could expand the creator's expressive power and engagement, while noting the need for credible resolution and governance to ensure value and trust.
Prediction markets are invading everything
Q: Is Substack getting paid by Polymarket for embedding charts and running sponsorships through the beta?
The guest indicates that financial details are not being disclosed, but confirms Polymarket joined Substack's sponsorships beta, highlighting a creator-friendly monetization approach rather than a direct revenue share from the integration.
Prediction markets are invading everything
Q: How did the Polymarket partnership come about, and why a deeper integration instead of a competing platform?
Alex explains that the integration grew from a long-standing interest in prediction markets and a productive conversation with Shane at Polymarket, leading to a version that emphasized display of price data and practical product value for Substack creators, with intentions to keep it optional for writers.

Audience Metrics

Listeners, social reach, demographics and more for this podcast.

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Frequently Asked Questions About Sources

What is Sources about and what kind of topics does it cover?

A sharp tech-focused show that centers conversations with insiders about AI, startup culture, platform strategy, design tools, and the evolving economics of big tech. Across recent episodes, listeners get candid discussions with founders, journalists, and product leaders who shape how AI gets built, who funds it, and how it impacts society—from autonomy in startup tooling to on-device privacy and the future of creator platforms. Notable traits include probing questions about governance, openness, and ethics, plus hands-on product context around tools used by designers, developers, and creators. The format often blends founder storytelling with practical product insights and a pulse on Silicon Valley dynamics, making it especially valuable f... more

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Which podcasts are similar to Sources?

These podcasts share a similar audience with Sources:

1. Decoder with Nilay Patel
2. Prof G Markets
3. Hard Fork
4. Big Technology Podcast
5. Channels with Peter Kafka

How many episodes of Sources are there?

Sources launched a year ago and published 55 episodes to date. You can find more information about this podcast including rankings, audience demographics and engagement in our podcast database.

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What guests have appeared on Sources?

Recent guests on Sources include:

1. Marc Benioff
2. Tuhin Bhattacharyya
3. Mark Zuckerberg
4. Sam Altman
5. Dan Shipper
6. Quinten Farmer
7. Jon Steinback
8. Jason Yuan

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