The Ruby AI Podcast

Valentino Stoll, Joe Leo

The Ruby AI Podcast explores the intersection of Ruby programming and artificial intelligence, featuring expert discussions, innovative projects, and practical insights. Join us as we interview industry leaders and developers to uncover how Ruby is shaping the future of AI.

  1. From Writing Code To Orchestrating It, Agentic Development with Ben Scofield

    HACE 1 DÍA

    From Writing Code To Orchestrating It, Agentic Development with Ben Scofield

    In this episode of the Ruby AI Podcast, hosts Valentino Stoll and Joe Leo are joined by Ben Schofield, an accomplished author, open source contributor, and Ruby enthusiast. The discussion starts with thoughts on the upcoming RubyConf and the unique experience of conferences hosted in Las Vegas. Ben shares his recent experiences with Bento and the impact of layoffs. The conversation delves deep into the nature of expertise, exploring questions around achieving world-class performance and domain-specific skills. The hosts explore the goals of software development, the role of AI in coding, and the importance of intentionality in using agents. They also touch on the concept of default settings in development, the nuances of staff engineering, and strategies for training future staff engineers. The discussion concludes with ideas for improving the onboarding and training of engineers in the evolving landscape of AI tools. Mentioned in this episode: RubyConf 2026 (Las Vegas)RailsConf (context/history)O’Reilly (RailsConf partner mentioned historically)Bento (Ben’s recent company)Gusto (host context)Artificial Ruby / Ruby x AI NYC meetupsAgentic coding & toolingClaude Code docsClaude Code + MCPBooks, papers, and ideasC. Thi Nguyen (background)Games: Agency as Art (Oxford)Ezra Klein Show episode (Nguyen)Malcolm Gladwell, OutliersAndy Hunt, Pragmatic Thinking and Learning (Refactor Your Wetware)Ericsson et al. (1993) deliberate practice (DOI)Macnamara & Maitra replication (2019) (DOI)David Epstein, RangeWill Larson, Staff EngineerRobert Cialdini, Influence resourcesDHH on conceptual compressionChad Fowler, The Phoenix Architecture (Leaflet)Quote referenced (“How can I know what I think till I see what I say?”)Ruby/Rails primitives referenced in Valentino's experimentsRuby method_missingRuby define_methodRails rescue_fromValentino's experimental Ruby project (“Chaos to the Rescue”) that uses LLMs + runtime method definition

    53 min
  2. New Year, New Ruby: Agents, Wishes, and a Calm Ruby 4

    27 ENE

    New Year, New Ruby: Agents, Wishes, and a Calm Ruby 4

    Ruby turns 30, Ruby 4 quietly ships, and the AI tooling arms race shows signs of maturity. Valentino and Joe unpack what stability really means for a language in its third decade, debate agent-driven development, AI “slop,” binary distribution, and whether open source incentives are breaking down—or simply evolving. Mentioned In The Show A grab-bag of tools, projects, and references Valentino & Joe brought up. Ruby & Core Ecosystem Ruby Gets A Fresh Look — Official Ruby programming language site (news, downloads, docs) now with a great new look.  Ruby Kaigi — Ruby’s flagship conference (talks, schedules, archives). Bundler — Ruby dependency manager used across the ecosystem.AI Coding Tools Claude Code — Anthropic’s CLI coding assistant workflow discussed heavily in the episode.OpenAI Codex — OpenAI’s coding agent/tooling referenced as an alternative workflow. Ruby Web Frameworks & Architecture Rails Framework — Ruby on Rails, referenced as the default baseline for many apps.Jumpstart Rails — Rails starter kits/templates mentioned as a “pick a Rails” approach.Roda Framework — Jeremy Evans’ web toolkit (lighter than Rails, bigger than Sinatra).dry-rb Suite — Ruby gems for functional-ish architecture and explicit business logic.Trailblazer — High-level architecture for operations, workflows, and domain logic.Quality, Testing, and Practice Better Specs — Community-curated RSpec guidelines mentioned as a spec style target.Datadog — Error monitoring referenced in the “well-defined bug + stack trace” workflow.Open Source Sustainability GitHub Sponsors — Sponsorship mechanism discussed as one (partial) monetization path.People Mentioned Sandi Metz — Referenced as the “code whisperer” ideal for idiomatic Ruby guidance.

    51 min
  3. Running Self-Hosted Models with Ruby and Chris Hasinski

    02/12/2025

    Running Self-Hosted Models with Ruby and Chris Hasinski

    In this episode of the Ruby AI Podcast, hosts Valentino Stoll and Joe Leo welcome AI and Ruby expert Chris Hasinski. They delve into the benefits and challenges of self-hosting AI models, including control over model updates, cost considerations, and the ability to fine-tune models. Chris shares his journey from machine learning at UC Davis to his extensive work in AI and Ruby, touching upon his contributions to open source projects and the Ruby AI community. The discussion also covers the limitations of current LLMs (Large Language Models) in generating Ruby code, the importance of high-quality data for effective AI, and the potential for Ruby to become a strong contender in AI development. Whether you're a Ruby enthusiast or interested in the intersection of AI and software development, this episode offers valuable insights and practical advice. 00:00 Introduction and Guest Welcome 00:31 Why Self-Host Models? 01:28 Challenges and Benefits of Self-Hosting 03:14 Chris's Background in Machine Learning 04:13 Applications Beyond Text 06:39 Fine-Tuning Models 12:27 Ruby in Machine Learning 16:06 Distributed Training and Model Porting 18:22 Choosing and Deploying Models 25:19 Testing and Data Engineering in Ruby 27:56 Database Naming Conventions in Different Languages 28:19 Importance of Data Quality for AI 18:03 Monitoring Locally Hosted AI Models 29:37 Challenges with LLMs and Performance Tracking 31:09 Improving Developer Experience in Ruby 31:45 Ruby's Ecosystem for Machine Learning 32:43 The Need for Investment in Ruby's AI Tools 38:25 Challenges with AI Code Generation in Ruby 43:35 Future Prospects for Ruby in AI 51:26 Conclusion and Final Thoughts

    54 min
  4. The Latent Spark: Carmine Paolino on Ruby’s AI Reboot

    18/11/2025

    The Latent Spark: Carmine Paolino on Ruby’s AI Reboot

    In this episode of the Ruby AI Podcast, hosts Joe Leo and his co-host interview Carmine Paolino, the developer behind Ruby LLM. The discussion covers the significant strides and rapid adoption of Ruby LLM since its release, rooted in Paolino's philosophy of building simple, effective, and adaptable tools. The podcast delves into the nuances of upgrading Ruby LLM, its ever-expanding functionality, and the core principles driving its design. Paolino reflects on the personal motivations and community-driven contributions that have propelled the project to over 3.6 million downloads. Key topics include the philosophy of progressive disclosure, the challenges of multi-agent systems in AI, and innovative ways to manage contexts in LLMs. The episode also touches on improving Ruby’s concurrency handling using Async and Rectors, the future of AI app development in Ruby, and practical advice for developers leveraging AI in their applications. 00:00 Introduction and Guest Welcome 00:39 Depend Bot Upgrade Concerns 01:22 Ruby LLM's Success and Philosophy 05:03 Progressive Disclosure and Model Registry 08:32 Challenges with Provider Mechanisms 16:55 Multi-Agent AI Assisted Development 27:09 Understanding Context Limitations in LLMs 28:20 Exploring Context Engineering in Ruby LLM 29:27 Benchmarking and Evaluation in Ruby LLM 30:34 The Role of Agents in Ruby LLM 39:09 The Future of AI Apps with Ruby 39:58 Async and Ruby: Enhancing Performance 45:12 Practical Applications and Challenges 49:01 Conclusion and Final Thoughts

    52 min
  5. The TLDR of AI Dev: Real Workflows with Justin Searls

    21/10/2025

    The TLDR of AI Dev: Real Workflows with Justin Searls

    In this episode of the Ruby AI Podcast, co-hosts Valentino Stoll and Joe Leo engage in a lively discussion with guest Justin Searls. They explore the evolving landscape of software development with agentic AI tools, comparing traditional agile methodologies with emerging AI-driven practices. Justin Searls his experiences with refactoring and the challenges of integrating AI tools into development workflows. The conversation touches on the suitability of AI in coding, philosophical perspectives on reinforcing proper software practices, and the future potential of these technologies. Justin also provides valuable insights on configuring AI tools for better productivity and discusses his personal coping strategies with the frustrations of modern AI capabilities. 00:00 Introduction and Hosts Banter 00:30 Guest Introduction: Justin Searls 03:13 Justin's Career and Conference Talks 07:52 The Evolution of Agile and Development Practices 16:07 Challenges with AI and Iterative Development 27:47 Recalibrating Development Processes 28:00 Adoption of Pivotal Labs' Methods 28:28 Continuous Integration and Testing 29:21 AI in Development: Current State and Challenges 30:16 The Role of AI Agents in Development 32:17 Frustrations with AI Tools 35:03 Philosophical Reflections on AI in Development 36:16 Generative vs. Subtractive AI 37:06 The Future of AI in Software Development 39:27 Balancing Coding Enjoyment and Productivity 44:02 Capability vs. Suitability in AI Tools 46:35 Prompt Engineering Tips and Tricks 52:39 Closing Thoughts and Plugs

    55 min
  6. Real-World Ruby AI: Practical Systems That Work

    07/10/2025

    Real-World Ruby AI: Practical Systems That Work

    In this episode of the Ruby AI Podcast, co-hosts Joe Leo and Valentino Stoll, alongside guest Amanda Bizzinotto from Ombu Labs, delve into the ongoing controversy within the Ruby community involving Ruby Central, Shopify, and Bundler/Ruby Gems. While both Valentino and Amanda share their perspectives on the situation, the conversation swiftly transitions into Amanda's journey and current work in AI and machine learning at Ombu Labs. The episode highlights various AI initiatives, including the creation of an AI bot to streamline internal processes, automated Rails upgrade roadmaps, and multi-agent architectures aimed at enhancing efficiency in Rails projects. Amanda also discusses the challenges of integrating AI in consultancy services and shares some insights on the tools and strategies used at Ombu Labs. The podcast concludes with exciting updates about Amanda's recent work, Joe's announcements on upcoming projects including Phoenix's public release, and Valentino's discovery of a new user interface for Claude Swarm. 00:00 Introduction and Welcome 00:26 Ruby Community Controversy 04:37 Amanda's AI Journey 08:45 AI in Business and Consultancy 16:24 AI-Powered Tools and Applications 23:09 Managing Knowledge Base Updates 24:42 Prompting Strategies and Agentic Workflows 26:02 Understanding Workflows vs. Agents 28:37 Observability in AI Systems 29:06 Advanced Prompting Techniques 31:08 Multi-Agent Architectures 34:32 Ruby AI Gems and Libraries 37:09 Exciting Announcements and Future Plans 41:44 Conclusion and Final Thoughts Mentioned In The Show: AI for Rails upgrades: FastRuby automated roadmapPGVector and Neighbor gemGuardrails.ai for hallucination control (https://www.guardrailsai.com)Microsoft Presidio for PII strippingObservability with LangFuse (https://www.langfuse.com)Prompting engineering techniquesChain-of-Thought, ReAct pattern article ActiveAgentLangChain.rbDSPy.rbPhoenix AI upgrade assistant public beta Oct 15 eventOmbu Labs roadmap tool live nowSwarm UI for Claude Swarm by Parruda Ombu Labs – https://ombulabs.comArtificial Ruby NYC meetup – https://artificialruby.aiShopify Claude Swarm project – https://github.com/shopify/claude-swarm

    42 min

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The Ruby AI Podcast explores the intersection of Ruby programming and artificial intelligence, featuring expert discussions, innovative projects, and practical insights. Join us as we interview industry leaders and developers to uncover how Ruby is shaping the future of AI.

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