Download Podcasts as MP3

Search for a podcast, browse episodes, and download MP3 files directly from the publisher's website. Every episode comes with a downloadable transcript - we generate one if the show doesn't provide it.

Episodes from 21 in 21

21 in 21: 0xSero on Local AI, Open Models, and Benchmarking

21 in 21: 0xSero on Local AI, Open Models, and Benchmarking

0xSero joins Haley Berkoe on 21 in 21 to discuss local AI, open models, and his soon-to-be-released platform for benchmarking open models and hardware (local.ai). He explains how his team benchmarks models and hardware, why local AI is becoming more capable and affordable, and why ownership and…

Jul 28, 202620 min
21 in 21: Bradley Axen on Buzz, goose, and AI at Block

21 in 21: Bradley Axen on Buzz, goose, and AI at Block

Haley Berkoe sits down with Bradley Axen, who is leading many of Block's AI initiatives, including Buzz, a new open-source collaboration platform designed for humans and AI agents to work together. He also helped create goose, the open-source AI agent that was later donated to the Agentic AI…

Jul 24, 202625 min
21 in 21: Mic Neale on goose, Mesh LLM, and Open Source AI

21 in 21: Mic Neale on goose, Mesh LLM, and Open Source AI

Mic Neale, a member of the Spiral team at Block and a core developer of goose, an open source AI agent, joins Haley Berkoe on 21 in 21 to discuss goose, Mesh LLM, and open source AI. Mic shares how goose has evolved from a desktop app and CLI into the goose Development Kit (GDK), making it easier…

Jul 23, 202623 min
21 in 21: Patrick Ball on Using Bitcoin and AI to Defend Human Rights

21 in 21: Patrick Ball on Using Bitcoin and AI to Defend Human Rights

Patrick Ball, Director of Research at the Human Rights Data Analysis Group, joins Haley Berkoe on 21 in 21 to discuss how data, bitcoin, and AI can help defend human rights. Patrick explains how his team uses statistics to document mass violence, how bitcoin can help protect the integrity of human…

Jul 2, 202622 min
21 in 21: Calle on Cashu, Clawi, and AI Agents

21 in 21: Calle on Cashu, Clawi, and AI Agents

On this episode of 21 in 21, Calle discusses his work on Cashu, Bitchat, and Clawi. He explores how AI agents could use bitcoin-native payments and why privacy-preserving infrastructure matters in an increasingly agentic internet. Calle also reflects on his journey down the bitcoin rabbit hole,…

May 21, 202622 min
21 in 21: Linn Bieske on Hack-Nation and Building Global AI Communities

21 in 21: Linn Bieske on Hack-Nation and Building Global AI Communities

Linn Bieske, Co-Lead of the AI & Technology Track at the MIT Club of Northern California (CNC), AI Product Manager, and Co-Founder of Hack-Nation, joins Haley Berkoe on 21 in 21. They discuss the upcoming Hack-Nation event on April 25 and Spiral’s sponsored challenge exploring what becomes possible…

Apr 16, 202626 min
21 in 21: Rainey Reitman on Transaction Denied and Financial Censorship

21 in 21: Rainey Reitman on Transaction Denied and Financial Censorship

Rainey Reitman joins 21 in 21 for a conversation on financial censorship, free speech, and her new book, Transaction Denied: Big Finance’s Power to Punish Speech. Rainey co-founded Freedom of the Press Foundation and serves on the board as president. She also spent 11 years at the Electronic…

Apr 7, 202625 min
21 in 21: Michael Saylor on Bitcoin, AI, and Advice for Builders

21 in 21: Michael Saylor on Bitcoin, AI, and Advice for Builders

Michael Saylor joined Haley Berkoe on 21 in 21 for a rapid-fire conversation on bitcoin, AI, and what’s coming next. He shares what’s top of mind for 2026, why he sees this year as a major turning point, and how he thinks bitcoin could evolve as digital capital beneath new layers of credit and…

Mar 19, 202622 min
21 in 21: Andi Pitt on Bitcoin Venture, AI, and Cognitive Sovereignty

21 in 21: Andi Pitt on Bitcoin Venture, AI, and Cognitive Sovereignty

Andi Pitt of Ego Death Capital joined me on 21 in 21 to talk about the rise of new startups in the bitcoin ecosystem, how the funding landscape has changed, and the growing intersection of bitcoin and AI. She also shares what she looks for in founders and offers advice for launching a startup.…

Mar 17, 202624 min
21 in 21: Mark Suman on Privacy-First AI

21 in 21: Mark Suman on Privacy-First AI

Mark Suman, co-founder and CEO of Maple AI, a privacy-first AI chat platform known as “the Signal of AI,” joins Haley Berkoe on 21 in 21. Mark explains how Maple AI uses secure enclaves to deliver a ChatGPT-like experience while getting as close to local-AI privacy as possible, without requiring…

Jan 13, 202622 min
21 in 21: David Gumberg on the Chaincode ₿OSS Challenge and Becoming a Bitcoin Core Contributor

21 in 21: David Gumberg on the Chaincode ₿OSS Challenge and Becoming a Bitcoin Core Contributor

Haley Berkoe sits down with David Gumberg, a Bitcoin Core contributor at Localhost, a bitcoin-focused research center in the Bay Area. David shares how he got into bitcoin, what pushed him from curiosity to contribution, and how completing the Chaincode ₿OSS Challenge in 2024 helped him make the…

Dec 17, 202523 min
21 in 21: Rod Roudi

21 in 21: Rod Roudi

In this episode of 21 in 21, Haley sits down with Rod Roudi, co-founder of Bitcoin Park in Nashville and Austin. Rod breaks down how Bitcoin Park began, why in-person energy fuels strong communities, and how Nashville grew into a hub for bitcoiners, policymakers, founders, developers, and…

Dec 11, 202524 min