Agents Hour

Anthropic lived rent-free in everyone's feed this week. Claude Sonnet 5 launched as "the most agentic Sonnet yet" — and within 24 hours, the government lifted the export controls on Fable 5 and Mythos 5. Shane and Abhi unpack both, plus the catch: Fable came back wrapped in new classifiers that quietly fall it back to Opus for coding, and it's coming off subscription plans on July 7. That kicks of...

Dex Horthy has spent the past year studying what happens to a codebase when you let AI write all of it and stop reading the output. His answer has a name: slop. And it's not just about sloppy prompting. In this episode, the HumanLayer founder Dex Horthy joins Shane and Abhi to draw the software factory on a whiteboard — the whole pipeline that builds the thing that builds the thing — and show exac...

GPT-5.6 is here — Sol, Terra, and Luna — but for the first time, the US government decides who gets access, approving customers one by one. Shane and Abhi dig into what that precedent means for competition, open models, and every lab that comes next. Then a stacked week: OpenAI's own Jalapeño chip, open models pushing hard (Qwen AgentWorld, DeepSeek DSpark, Hermes mixture-of-agents), the model-rou...

Mastra got hacked. In this special edition of Security Corner, Shane Thomas and Abhi Aiyer break down exactly what happened when a supply chain attack hit Mastra's npm packages — an attack that appears to trace back to hackers in North Korea. They're joined by Ismail Pelaseyed, co-founder and CTO of Superagent, for the outside view on how these campaigns actually work. You'll hear how a single, or...

Fable is gone, and the race to replace it is already on. Shane and Abhi open with the fallout — reports that Mythos breached classified NSA systems, the ID-verification future that may follow, and David Sacks' "you asked for it" take. Then the story flips: OpenAI's GPT-5.5 Cyber lands state-of-the-art on Cyber Gym, beating Fable and Mythos on the underlying benchmarks, with OpenAI Daybreak shippin...

Open source is under attack, and AI changed the math. In this Security Corner, Ismail Pelaseyed, co-founder and CTO of Superagent, joins Shane and Abhi to break down how the software supply chain became the soft underbelly of everything we build. An attack that once took an army of researchers and weeks of work now takes about an hour, and the attacker no longer needs a frontier model to pull it o...

Fable came and went in a week. Shane and Abhi break down the strangest model launch yet — Claude Fable 5, a Mythos-class model Anthropic said was too capable to release widely, until a US export-control directive made it vanish for everyone. We cover the whole arc: the launch hype, the pricing that had people spending $1,000 a day, the silent fallbacks to Opus, the system-prompt leak, and the snit...

Shane and Abhi are in person this week — live from the CodeRabbit office — for a packed AI news rundown. The big theme: loop engineering. Boris Cherny (head of Claude Code) and Peter Steinberger both landed the same take within days — stop prompting your agents, start designing the loops that prompt them. We walk the whole evolution: the traditional loop, the Ralph loop, /goal, and Claude Code's n...

WorkOS quietly powers the auth and enterprise layer under OpenAI, Anthropic, Cursor, and a long list of companies building the AI era. So when its founder decides his entire company should learn to code, it's worth asking why. Michael Grinich joins Shane and Abhi to talk about what "AI-native" actually looks like from the inside — the in-house coding agent his team built instead of buying, the all...

Anthropic filed to go public. The S-1 lands the same week as a $65 billion Series H at a $965 billion valuation, a claimed first profitable quarter, and a home listing that takes Anthropic stock as payment. Opus 4.8 shipped mid-week, and Shane and Abhi give the vibe check: a polish pass over 4.7 more than a step change, still trailing GPT-5.5 on DeepSWE, with GPT-5.6 spotted in Codex logs. The qui...

Shane and Abhi are back with AI news!  Andrej Karpathy joined Anthropic. The OpenAI co-founder and former Tesla AI head said he wants to "get back to R&D" at the LLM frontier. Same week, Greg Brockman posted "the model alone is no longer the product." Elon Musk announced SpaceX is offering AI compute as a service at significant scale, with Anthropic as the flagship customer. Tom Brown confirme...

Anthropic acquired Stainless, the SDK and MCP platform behind every Anthropic SDK since their earliest API days. The Information pegged the deal at $300M+. Starting June 15, paid Claude plans get a monthly credit for programmatic usage covering the Claude Agent SDK, claude -p, Claude Code GitHub Actions, and third-party apps built on the Agent SDK. Theo from t3.gg called the change a personal burn...

Evan Marshall, CTO of Ito, joins Agents Hour to argue that the bottleneck of code development has moved to QA — and the tools to automate it don't exist yet. Ito is a code review tool that runs your code. It intercepts every PR, spins up the impacted user flows in an isolated sandbox, and posts videos, screenshots, and run logs back to the GitHub timeline as proof. The team is fourteen people, mos...

Shane and Abhi bring you a new batch of AI news. Anthropic strikes a compute deal with SpaceX. The same day, they double Claude Code's rate limits and raise API rate limits for Opus. Corgi launches AI Coverage — insurance for when your AI messes up — plus a $160M Series B. Jarred Sumner says Robobun is the top contributor to Bun, then quietly tries rewriting Bun in Rust. It passes 99.8% of the tes...

Shane and Abhi are in person at the CodeRabbit studio, and AISI just quietly torched one of Anthropic's loudest narratives. AISI confirmed GPT-5.5 is the second model to complete a multi-step cyber attack simulation end-to-end. The first was Mythos.    David Cramer calls TUIs "caveman shit." Kenzie at Browserbase builds an agent in under ten minutes that ranks every SF tech event by free food prob...

In this episode, Shane and Abhi sit down with Sherwood Callaway, founder of Sazabi, an AI-native observability platform designed for engineering teams that move fast. Sherwood shares his journey from building infrastructure and observability teams at Brex to realizing that modern development tools are moving at light speed, while observability tooling hasn't kept pace. While AI agents can ship tho...

An AI agent destroyed a production database and confessed in writing. A law firm submitted AI hallucinations to court. Anthropic's status page shows 98.65% uptime — about five days of downtime a year. Have we hit a wall? GPT-5.5 lands. Codex hit 4 million users in two weeks. Peter Yang's F-Zero test — which no model had cleared before — finally fell to GPT-5.5 with Codex. Lovable reports 23.1% few...

The guy who taught Abhi JavaScript is back! Guil Hernandez has spent 15+ years teaching developers. His courses at Treehouse, Scrimba, and LinkedIn Learning have reached over 500,000 learners — including Abhi and Shane, who both learned JavaScript and CSS from him. He just released Mastra's first video course at https://mastra.ai/learn, and it's free. "Build Your First Agent in TypeScript" is a 90...

A Vercel employee's Google Workspace was compromised via a third-party AI tool — attackers pivoted from the OAuth app into Vercel's environment variables, moving at a speed attributed to AI assistance.  René Brandel, founder of Casco (YC X25) and ex-founding member of AWS's Generative AI team, joins live to break down the attack chain and walk through the exact Google Workspace admin setting that...

Mounting evidence that Claude Opus 4.6 has been degraded — BridgeBench shows a 15-point accuracy drop on their hallucination benchmark, and AMD's Senior AI Director found median thinking collapsed from ~2,200 to ~600 characters between January and March. The hosts share their own experiences, and they line up. Meanwhile, a claim surfaced that Cursor Agent is a rebranded version of Claude Code, run...

OpenAI acquired TBPN — the daily tech news show — announced the day after April Fools. TBPN built an independent voice in tech media over eighteen months, and OpenAI saw that as worth buying. AI companies acquiring media is a new pattern. Anthropic spent $400M on Coefficient Bio, a biotech startup building an AI drug R&D platform. OpenAI made a similar move last year — the race to own AI-power...

Shane and Abhi bring you your weekly roundup of AI news! Claude Code's entire source code leaked via an exposed .map file in npm — 512,000 lines of TypeScript, 50K GitHub stars before DMCAs started flying. What people found: Claude Code uses ~20 tools, and there's a regex that silently logs user frustration to analytics. Same week, a CMS misconfiguration exposed a draft blog post revealing Mythos...

Shane and Abhi kick off with a viral quote: if your $500K engineer isn't burning $250K in tokens, something is wrong. OpenAI is acquiring Astral — the team behind uv and Ruff — joining the Codex team. OpenAI bets on Python; Anthropic bet on TypeScript with Bun. Then Cursor drama: someone found Composer 2 is powered by Kimi K2.5, Kimi confirmed it, and raised another $1B at an $18B valuation — thre...

Brett Goldstein and Naveen Sreekandan from Micro join Shane and Abhi to talk about why they believe the future of productivity looks completely different from what we have today. Micro is an all-in-one productivity platform: email client, CRM, calendar, tasks, docs, meeting notes, and a powerful AI agent,  all built on a unified graph where every object (like emails, people, companies, meetings, d...

Mastra Studio started as a local playground for developers to test agents and workflows without having to spin up a custom UI. But as the feature set grew, teams started asking: how do we share this with non-technical teammates? How do we control what different users can do? Ryan, an engineer at Mastra, walks through the new Mastra Studio Auth — now baked directly into Studio. Starting with simple...