Ajay and Andrew start with a cat-induced re-recording and end somewhere they did not expect: the first real "yes" to the show's core question. In between they dig into the software engineering loop, why contracts and modularization make AI-assisted work parallelizable, how to tell when a system actually needs to be split up, and why observability and flexibility are the two tenets they will not give up. They compare Codex, Claude, Fable, and GLM in real use, from usage limits and precision to one-shotting and transparent peak-hour pricing, trade notes on adopting the GSD workflow without losing their own, and watch Sonnet 5 debug an AWS permissions rabbit hole on its own.

In this episode:

Contracts and modularization, and why they make AI-assisted work parallelizable

How to tell when a system actually needs to be split up

Codex vs. Claude vs. Fable vs. GLM in real, day-to-day use

Why observability and flexibility are the two tenets of the loop

Adopting a shared workflow without giving up a hand-built one

The first real "yes" to the show's question: act, or intelligence?

Chapters:

(00:00:00) - Welcome (and a cat-induced take two)

(00:02:42) - The "software engineering loop": planning and parallelization

(00:05:20) - What's a contract? APIs, JSON, and Amazon Bedrock

(00:08:04) - Versioning contracts: 1.0 and breaking changes

(00:12:09) - Enforcing contracts: validation, CI, and TDD

(00:14:39) - Don't modularize too early: velocity as the signal

(00:17:23) - Model limits and generosity (and Grok 4.5 lands)

(00:20:24) - Codex's precision vs. Claude's fill-in-the-blanks

(00:22:39) - Concise vs. detailed, and OpenAI's Sol/Luna/Tara

(00:25:30) - Trying GLM from z.ai, and transparent peak-hour pricing

(00:32:09) - A bash wrapper to swap models into the Claude harness

(00:34:47) - Back to Claude: why Fable wins on efficiency

(00:37:07) - Is Fable one-shotting because SWE principles got trained in?

(00:38:19) - Sonnet 5 down an AWS SAM permissions rabbit hole

(00:42:41) - Observability for coding agents (LangFuse, Braintrust)

(00:45:16) - Adopting GSD: hooks, overlap, and what to steal

(00:53:03) - Two tenets of the loop: observability and flexibility

(00:54:38) - Blind spots, rituals, and what GSD surfaced

(01:01:36) - Act or intelligence? The first "yes"

Ajay and Andrew get pulled off their notes and into a bigger question: as coding assistants get better at running themselves, what is left for us to do? Fresh off a week of hands-on time with Claude Code and Codex, they compare the limits, the harnesses, and the agents that spawn their own agents, then land somewhere surprisingly practical: the age of the "digital handyman," where anyone can build bespoke software for their own life. Along the way they get into the LLM wiki as a second brain, why Anthropic may be out-earning OpenAI on a fraction of the users, whether vibe coding is dead or just getting started, and the closing verdict that the best handyman might be hands off.

In this episode:

The LLM wiki as a second brain that lives beyond the model's context window

Why the harness, not the model, is becoming the real product

Anthropic vs. OpenAI, and what "winning on revenue" actually means

Guardrails, newbies, and whether the software development lifecycle still matters at home

Building your own finance app when Monarch and Plaid keep breaking

Codex's "goal" that runs for days, and why the best handyman might be hands off

Chapters:

(00:00:00) - Welcome: what "Act of Intelligence" is about

(00:02:08) - The LLM wiki: a second brain beyond the context window

(00:04:36) - How the wiki works: concepts, synthesis, and "runoff"

(00:16:35) - A home-OS detour, and modularizing for the human mind

(00:26:28) - Claude Code's limits vs. Codex's generosity

(00:27:31) - Anthropic vs. OpenAI: revenue on a fraction of the users

(00:32:49) - Wrappers over models: the harness is the value

(00:34:13) - The desktop app that spawned and reviewed its own agents

(00:38:32) - Guardrails, newbies, and "is vibe coding dead?"

(00:44:24) - When software isn't a moat (and a billion habit trackers)

(00:46:57) - Monarch, Plaid, and rolling your own finance app

(00:49:30) - Pillars of Wealth and the home finance assistant

(00:52:19) - The digital age of the handyman

(00:56:51) - Now you're the product manager (and trimming the tools)

(01:03:45) - Codex's "goal": the run that wouldn't stop

(01:08:29) - "The best handyman is hands off"

(01:11:07) - Opinionated harnesses, and the future they're building

(01:14:11) - Mirage or oasis? The close

If coding is "solved," is software engineering? Ajay Medury (software engineer) and Andrew Sierota (systems engineer) pick up where Episode 1 left off and get into the part that isn't solved: judgment. They trade notes on why weekly usage limits have quietly become the real project budget, what it's like to build a sharded Minecraft world solo as both product manager and principal engineer, what Amazon's New World got wrong about scale, running decorrelated multi-model code reviews, and what an AI "skill" actually is. It might all just be an act of intelligence.

In this episode:

• Why "coding is solved" but software engineering isn't, and why judgment is the expensive part
• The new bottleneck: weekly subscription usage limits as a hard budget
• Breaking a big build into modules and submodules, and shrinking scope to actually ship
• Wearing every hat at once: product manager and principal engineer
• New World and the problem of scale at launch
• Large codebases, heavy test coverage, and review rounds that exposed process gaps
• Pre-flight checks, linters, and spec-tracing that cut review loops down
• Decorrelated reviews: several different models reviewing blind, then taking the union of findings
• What an AI "skill" is: system prompts, user prompts, and guardrails for long workflows
• Severity tiers for findings: blockers, warnings, defers, suggestions, and nits
• Why systems admins, as generalists by trade, may be an ideal audience for these tools

Chapters:

• (00:00:00) - Real intelligence, or just an act?
• (00:01:02) - Coding is solved; software engineering isn't
• (00:02:02) - Keeping up with the release pace
• (00:05:27) - Vibe coding vs. a repeatable process
• (00:06:40) - Usage limits are the new budget
• (00:08:40) - Breaking the build into modules
• (00:12:18) - A sharded world, every hat on one builder
• (00:17:12) - New World and the problem of scale
• (00:25:04) - 200k lines and a 90-round review
• (00:27:20) - Pre-flight checks that cut 90 rounds to 5
• (00:30:49) - The podcast's own local-GPU pipeline
• (00:33:27) - Learning by asking "what do you mean?"
• (00:35:35) - When a large agent run burned through the budget
• (00:38:05) - What is a skill, really?
• (00:48:05) - Skills as guardrails for long workflows
• (00:51:09) - Severity tiers: blockers to nits
• (00:54:34) - Why sysadmins are ideal builders
• (00:56:29) - A long-running Minecraft community, the real driver
• (01:00:56) - Closing: an act of intelligence