Will Larson on Software Factories lethain.com/software-factory… What I like is how simple the initial loop he built is. I also really like the project post-release software factory mode, I might steal that.
Shoutout to @BuiltByJustin on coining the term
HELLOOOOOO CRAWLERS!
Book 8, A Parade of Horribles is now available! We never expected to have so many crawlers reading this early. You are all so very spunky, and we really appreciate that. The ratings have never been higher!
Now get out there and Kill, Kill, Kill!
Ryan Castner retweeted
It's wild to think about how massive 1M token context windows in LLMs really are
That's roughly equivalent to:
- The complete works of Shakespeare
- 11 hours of audio
- A 5-minute session fixing some TypeScript issue
Ryan Castner retweeted
I'm usually not one to write thought pieces without much technical depth. But here we go.
Slow the fuck down.
mariozechner.at/posts/2026-0…
im in this post under ngmi and I dont like it
seems obvious but:
things that are changing rapidly:
1. context windows
2. intelligence / ability to reason within context
3. performance on any given benchmark
4. cost per token
things that are not changing much:
1. humans
2. human behavior, preferences, affinities
3. tools, integrations, infrastructure
4. single core cpu performance
therefore,
ngmi:
1. "i found this method to cut 15% context"
2. "our method improves retrieval performance 10% by using hybrid search"
3. "our finetuned model is cheaper than opus at this benchmark"
4. "our harness does this better because we invented this multi agent system"
5. "we're building a memory system"
6. "context graphs"
7. "we trained an in house specialized rl model to improve task performance in X benchmark at Y% cost reduction"
wagmi:
1. product/ui
3. customer acquisition
4. integrations
5. fast linting, ci, skills, feedback for agents
6. background agent infra to parallelize more work
7. speed up your agent verification loops
8. training your users, connecting to their systems and working with their data, meeting them where they are
a little copy is better than a little dependency from Go-isms
Software horror: litellm PyPI supply chain attack.
Simple `pip install litellm` was enough to exfiltrate SSH keys, AWS/GCP/Azure creds, Kubernetes configs, git credentials, env vars (all your API keys), shell history, crypto wallets, SSL private keys, CI/CD secrets, database passwords.
LiteLLM itself has 97 million downloads per month which is already terrible, but much worse, the contagion spreads to any project that depends on litellm. For example, if you did `pip install dspy` (which depended on litellm>=1.64.0), you'd also be pwnd. Same for any other large project that depended on litellm.
Afaict the poisoned version was up for only less than ~1 hour. The attack had a bug which led to its discovery - Callum McMahon was using an MCP plugin inside Cursor that pulled in litellm as a transitive dependency. When litellm 1.82.8 installed, their machine ran out of RAM and crashed. So if the attacker didn't vibe code this attack it could have been undetected for many days or weeks.
Supply chain attacks like this are basically the scariest thing imaginable in modern software. Every time you install any depedency you could be pulling in a poisoned package anywhere deep inside its entire depedency tree. This is especially risky with large projects that might have lots and lots of dependencies. The credentials that do get stolen in each attack can then be used to take over more accounts and compromise more packages.
Classical software engineering would have you believe that dependencies are good (we're building pyramids from bricks), but imo this has to be re-evaluated, and it's why I've been so growingly averse to them, preferring to use LLMs to "yoink" functionality when it's simple enough and possible.
1.25 billion tokens in 24 hours.
The Way of Kings by Brandon Sanderson is a 45 hour long audio book with 385,000 words or about 515k tokens.
Assume output was 1/1000th of input, that means this guy generated 2.43 The Way of Kings in 24hrs hours. This is called vibe coding.
Ryan Castner retweeted
This is @RepoPrompt 2.0
A fully integrated agent, that makes it seamless to use RP's powerful MCP tools, with a built-in oracle and context builder.
A first class experience showcasing how much better and efficient your agents can be with good context engineering tools.
is this why codex suddenly got so much faster?
Introducing WebSockets in the Responses API.
Built for low-latency, long-running agents with heavy tool calls.
developers.openai.com/api/do…
Two tweets that caught my attention @thdxr on why expensive ideas were doing us a favor, and @thorstenball on realizing he's now the bottleneck between AI agents. I wrote about it: castner.io/logs/2025-02-14
xitter.cf/thdxr/status/202257471…
xitter.cf/thorstenball/status/20…
On Dungeon Crawler Carl #5 now after starting the series in December. I now want to make my LLM speak in the style of the AI in DCC and slowly go primal, would be a blast
Reading AI PRs and AI reviews feels icky. Like no one would actually write and format stuff like this, I think the problem is it doesn’t feel like two humans chatting but chatting with an AI, but through a human where I now have 0 trust you checked the AIs work.
I found this out, 3 years ago I got limited so fast on every book for being a sharp, especially arbing stands out for its weird bets. Plus EV betting worked for a while but they limited there too. Honestly probably a good thing, got out while the gettin was good
All of this is nuts, but these two facts are especially mindblowing:
- One gambling consultant tells The Economist that “By the time a customer places his first bet, [sportsbooks] are 80-90% certain they know the lifetime value of the account.”
- Sportsbooks mathematically monitor players and creates a new risk score every 6-8 hours (risk score = estimate of probability that customers will wind up unprofitable).
It's wild how unsophisticated and lazy banks are at understanding their customers, compared to other industries. Though perhaps that's ultimately a good thing.
This is meant to be cool but isn’t it also an indictment on how many resources we use to service trivial information? Not calling out v0 here, any AI is like this. I can’t help but wonder if all of this has made humanity better.
Ryan Castner retweeted
Ralph Wiggum is the craziest thing to happen in the coding agents space in 2026 so far
not the technique itself. just the fact that someone was like "here's a technique it's called the Ralph Wiggum technique because of the Simpsons guy" and everyone was like "OK sounds good"


















