10+ years in tech: Engineering + AI + platform. hackathon winner. open source contributor. kickball mvp. Building RentSi and https://xitter.cf/t.co/aMN2ZSpVCy

Remote
Joined December 2025
gpt-6.1 sol has the slowest tps and finishes a short code question first in my testing, start to exit, typical time over 6 runs each: gpt-6.1 sol: 9.3s muse wonder: 15.8s opus 5.5: 16.7s gemini 4 argon: 17.0s tps doesnt mean a task finishes first
muse wonder is about as fast as opus 5.5 in my runs on a long answer, counted the same way for all four: opus 5.5: 115 tps muse wonder: 110 gemini 4 argon: 80 gpt-6.1 sol: 47
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same opus 5.5, newer claude code cli version, less thinking on my tickets test. testing versions 2.1.308 against 2.1.284, every tickets run thought less, about 19% at the median.
Opus 5.5's thinking on my bug hunt spiked on Sept 30, then went back. from my testing it used: ~ 1,737 thinking tokens per run on Sept 29 ~ 5,314 on Sept 30 ~ 1,736 on Oct 21 same Claude Code version. different cli version tests running today.
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Opus 5.5's thinking on my bug hunt spiked on Sept 30, then went back. from my testing it used: ~ 1,737 thinking tokens per run on Sept 29 ~ 5,314 on Sept 30 ~ 1,736 on Oct 21 same Claude Code version. different cli version tests running today.
keep seeing reports of reduction in ability of Opus 5.5 on x in the past few days. going to run some tests in the lab and will post on workloadbench.brenhq.com also starting a new testing theory today with different cli versions to see their potential impact on test results
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Coding is solved
October has been an absolute nightmare for software > Railway - customer secrets exposure > LiteLLM - malicious PyPI + Docker releases > Zeabur - infrastructure breached > OpenCode - AI API keys exposed > OVHcloud CLI - official binaries backdoored > Rank Math PRO - malware in official plugin > TeamUpdraft - customer data compromised > ConnectWise - cloud backup identities compromised > Tensorlake - npm package infected > SubQuery - backdoored npm package > GhostAction - GitHub repos with malicious workflows > PHP - critical RCE vulnerabilities > Node.js - security vulnerabilities patched > eMudhra - certificate authority keys compromised > Tailscale - eMudhra incident At this point, the biggest security risk might not be the code we write, but the code we trust...
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I'm not buying any of your debt until you give us Fable 5.5 with no security guardrails.
BREAKING: Anthropic to publicly file for IPO as early as Friday, per YF
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fable weekly limit is tucked behind a chevron in a collapsed accordion pretty sure they're just hiding it now...
Anthropic has removed the separate Fable limits and combined it into the weekly. they're cooking yet again.
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Your job is to make as much money as possible. Skill up. Play the system. Get a feature in prod with projected MRR growth and apply for a new job. You’re not winning this game by staying an obedient employee.
20-year devs can't find work anymore
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keep seeing reports of reduction in ability of Opus 5.5 on x in the past few days. going to run some tests in the lab and will post on workloadbench.brenhq.com also starting a new testing theory today with different cli versions to see their potential impact on test results
opus 5.5 seems to be working the same as it did on launch day for me but i'm always on a lookout
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From my testing of Opus 5.5 and GPT-6.1 SOL, 89 to 96% of a typical long task's prompt came from cache.
gpt-6.1 sol has the slowest tps and finishes a short code question first in my testing, start to exit, typical time over 6 runs each: gpt-6.1 sol: 9.3s muse wonder: 15.8s opus 5.5: 16.7s gemini 4 argon: 17.0s tps doesnt mean a task finishes first
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Bren retweeted
Replying to @BrenBuilds
Haven’t read the thread, and I’m still sleepy, just woke up. But the premise that the “agent has to learn everything in the project from scratch” is false. It doesn’t need to understand the entire project to implement a new feature or fix a bug. This is obvious true, because much can be inferred from a single file from the interfaces it interacts with. And the more self-contained your files and modules are, the less context it needs. Of course, some tasks require a broader understanding of the codebase. But that can be rediscovered as needed. This is something I realized pretty early on. And it’s still one of the things I actively control as the human in the loop: I decide what context the agents get, and what they need to know. A well specified prompt will make the agent state whether more context is needed, but the agent can figure that out by itself anyways. I’d go further and argue that “knowing everything about the project” is detrimental. The underlying architecture is still the same, and everything in the context competes for attention. Things unrelated to the task injected into the context can only be detrimental.
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all the comments here are plugin/tools/mem caches which all *still burn tokens, either by more model calls or just file bloat. And yes, all the solutions to this problem become "stale". a conversation you just had adding a feature has made prior chats stale.
Every time I start a new session, my agent has to re-learn what everything in my project it from scratch. This is such a repetitive waste of tokens. AGENTS [dot] md doesn't solve this either because it's hard to keep it up to date and still burns tokens. Any proper solutions?
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just ported pstack to a codex plugin updated models.json to only models i prefer opened codex $pstack:create-verification-skill its creating verification and tests for areas ive never thought to check in my app... simply magnificent
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im so ready for Fable 5.5
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Something about him rubbing his athletes foot dry flakes all over the seat pissed me off
Coffee and Contemplation just hits harder in the Tesla Cybercab.
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You're not a REAL engineer if you haven't rebuilt an app you pay $10 a month for with 10x that amount in tokens.
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We need 2 week to slow the curve of AI psychosis
It is becoming f*cking dangerous A 23-year-old dev from China just ran 300 Claude Code agents in parallel and hooked them to a verification layer so none of them could bullshit him He opens the live dashboard: - 300 agents writing and checking at the same time - Every output verified against the source in ~100 ms - Three passes over 100 company profiles → zero errors left - Everything dumped straight into an Obsidian vault The trick is the split: one model does the work, a cheaper one decides if the claim is actually true. The loop doesn’t stop until everything checks out An analyst team would bill weeks for this. He got it in one run Same kind of Second Brain + swarm setup that keeps circulating. Bookmark the full breakdown
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The year is 2050. Robots do all blue collar work. AI does all the white collar work. Life expectancy is 150 years old. Drones keep humans under control.
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elon and anthropic are telling you to own assets 20% of Anthropic stock is committed to public good elon giving every kid in America one share of spacex tesla offering buy in to cybercabs for a robotaxi fleet AI is removing the need for human intelligence and labor
Next year, I will give one of my SpaceX shares to every kid in America. This will be the first of many.
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Fable 5.5 the testing lab is ready for you
gpt-6.1 sol has the slowest tps and finishes a short code question first in my testing, start to exit, typical time over 6 runs each: gpt-6.1 sol: 9.3s muse wonder: 15.8s opus 5.5: 16.7s gemini 4 argon: 17.0s tps doesnt mean a task finishes first
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