{"podcast":{"title":"Max Agency","slug":"max-agency-7807113","podcast_index_feed_id":7807113,"rss_url":"https://anchor.fm/s/1112ba400/podcast/rss","website_url":"https://podcasters.spotify.com/pod/show/supermix2","image_url":"https://d3t3ozftmdmh3i.cloudfront.net/staging/podcast_uploaded_nologo/45730400/45730400-1775664525711-922be329a7b5d.jpg","author":"LangChain","episode_count":10,"summary":"Welcome to Max Agency, a podcast about how the best AI agents are actually being built. Hosted by Harrison Chase, CEO of LangChain, each episode goes deep with the builders designing, deploying, and learning from real agent systems in the wild. From architecture decisions to evals, tooling, and failure modes, Max Agency is for people who want to understand what it really takes to build useful agents.","last_synced_at":"2026-07-31T02:20:41.667372+00:00","page_url":"https://stenobird.com/podcast/max-agency-7807113"},"episode":{"title":"How Hex builds AI agents that reason like human data analysts | Izzy Miller, AI Engineer","slug":"how-hex-builds-ai-agents-that-reason-like-human-data-analysts-izzy-miller-ai-engineer","published_at":"2026-04-09T16:00:00+00:00","page_url":"https://stenobird.com/podcast/max-agency-7807113/how-hex-builds-ai-agents-that-reason-like-human-data-analysts-izzy-miller-ai-engineer","show_page_url":"https://stenobird.com/podcast/max-agency-7807113","url":"https://podcasters.spotify.com/pod/show/supermix2/episodes/How-Hex-builds-AI-agents-that-reason-like-human-data-analysts--Izzy-Miller--AI-Engineer-e3hlc64","audio_url":"https://anchor.fm/s/1112ba400/podcast/play/118189700/https%3A%2F%2Fd3ctxlq1ktw2nl.cloudfront.net%2Fstaging%2F2026-3-9%2F421719256-44100-2-b3878aa07c936.mp3","summary":"Izzy Miller is an AI engineer at Hex, an AI analytics platform that was one of the first companies to ship data agents to real paying users. Today, Hex runs a multi-agent system with nearly 100K tokens of tools, and Izzy is building a 90-day simulation to evaluate whether those agents actually get smarter over time. In this conversation, he walks through the harness decisions that shaped their architecture, the failure modes Hex is seeing at scale, and what it takes to build an eval that no current model can pass. We also discuss: Why data agents are harder to verify than coding agents Under the hood of Hex’s agents How Hex is unifying separate agents Why most eval sets are bad The 90-day simulation for long-horizon evals How Izzy went from marketing to AI engineer References: Andon Labs Anthropic Barry McCardel ChatGPT Claude Code Claude Sonnet 4.6 DBT GPT-3.5 Turbo GPT-5.3 Codex Spark GPT-5.4 Hex LangChain LangSmith Looker OpenAI Opus 4.6 Satya Nadella Snowflake Vending Machine Where to find Izzy: LinkedIn Twitter/X Where to find Harrison: LinkedIn Twitter/X Where to find LangChain: Website Docs Send feedback or questions to maxagency@langchain.dev Timestamps: (01:35) Where Hex's notebook agent started (03:46) The moment Hex knew it was time for agents (07:36) Why data agents are harder to verify than coding agents (09:30) How Hex is unifying separate agents (13:28) Under the hood of the notebook agent (15:41) The harness features that are now holding the agent back (17:41) Why Hex built their own orchestrator (18:59) Managing nearly 100K tokens of tools (20:49) Ephemeral queries and agent behavior trade-offs (24:46) The UX problem with showing agents' thinking (27:28) Why verification is harder than transparency for data agents (31:00) Memory, context conflicts, and…","meta_description":"Izzy Miller is an AI engineer at Hex, an AI analytics platform that was one of the first companies to ship data agents to real paying users. Today, Hex ru…","key_points":[],"chapters":[],"topics":[],"duration_seconds":4100,"processing_state":"not_requested","actions":[{"name":"request_transcript","method":"POST","url":"https://stenobird.com/v1/public/podcasts/max-agency-7807113/episodes/how-hex-builds-ai-agents-that-reason-like-human-data-analysts-izzy-miller-ai-engineer/transcription-requests","description":"Idempotently request low-priority transcript generation for this episode."},{"name":"read_markdown","method":"GET","url":"https://stenobird.com/podcast/max-agency-7807113/how-hex-builds-ai-agents-that-reason-like-human-data-analysts-izzy-miller-ai-engineer.md","description":"Read the agent-friendly Markdown representation of this episode resource."}]}}