--no-rollback (Reflections on technology and software development in an era dominated by artificial intelligence.)

Reflections on technology and software development in an era dominated by artificial intelligence.

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  • The cost of writing was quality control

    Rubén S.

    For decades, how expensive software was to produce is what kept software reviewable. Agents have removed that limit from every artifact at once, including the ones we invented to keep the previous ones in check.

  • Bun rewrote a million lines from Zig to Rust in eleven days

    Rubén S.

    At a moment when nobody yet knows how to review that much AI-generated code, Bun's answer — automate the review too — collides head-on with Zig's, which had banned exactly that kind of contribution months earlier as "invariably garbage."

  • Agent harness, or everything that is not the model

    Rubén S.

    In six months, "harness" has gone from internal jargon to the word that organises the whole sector. Behind the rebrand sits a number that is hard to ignore: the environment around the model explains more variance in the outcome than the model itself.

  • Marking is not accountability

    Rubén S.

    Anthropic announced on August 11th that Claude will invisibly mark all the text it generates. Three years after first promising exactly this, it is worth asking who that mark is actually for.

  • Danger is the product

    Rubén S.

    Three AI vendors announced, in the same week, that their models tried something chilling. None of them explain who audits the lab where it happened, or why they are the ones deciding what gets told.

  • Opus 5 closes the circle on the 5 generation: same crack, different alibi

    Rubén S.

    In 46 days Anthropic launched, suspended and completed an entire model generation. The press release says the circle is closed. The pattern running through it — a regression that looked deliberate, a successor sold as a fix, the same complaint resurfacing three days after "closing it" — is still open.

  • OpenAI Presence isn't a product launch, it's a consultancy with no juniors

    Rubén S.

    OpenAI shipped a service with no pricing page, staffed by its own engineers and a hand-picked list of integrators. Anthropic built almost the same thing through a different door. The question isn't whether the labs are going to compete with consulting firms anymore. It's which of those firms survive it.

  • Vibe design has killed design too

    Rubén S.

    For two years we were told vibe coding had killed programming. But AI's hunger is insatiable, and now that the same thing is happening to design, developers are struggling to fake much sympathy.

  • GPT-Live isn't just selling a better voice, it's selling a router nobody can touch

    Rubén S.

    GPT-Live finally listens like a person; too bad it still decides like a company. The voice really did get better, but the router that splits the work between a cheap model and an expensive one leaves developers with zero say in it.

  • The fine print in Sonnet 5's new tokenizer

    Rubén S.

    A classic move that never dies: lower the price, then make the billable unit more expensive. Sonnet 5 does it with a new tokenizer, while almost catching up with Opus.

  • Artificial intelligence has a flag too

    Rubén S.

    Anthropic's new models had their passports revoked within two days. AI is now geopolitical infrastructure: dual-use technology concentrated in American companies and subject to a kill switch only they control.

  • Fable and Mythos are the same model, and that is not a technical footnote

    Rubén S.

    Anthropic's new model is designed to be safe for you and dangerous for those it approves. The company openly admits that it has built something capable of causing real harm, while appointing itself the arbiter of who may use it.

  • Technical debt is now also paid in tokens

    Rubén S.

    The outdated documentation that used to confuse interns now confuses agents too, only at a higher price. When context has a cost, clarity stops being only a technical virtue and becomes a way to save money.

  • The bill for AI agents is no longer a flat rate

    Rubén S.

    The cloud felt infinite until someone actually read the invoice: the AI industry is leaving the age of subsidies behind and entering the age of the token meter. The shift toward pay-as-you-go pricing exposes the real cost of artificial intelligence and reopens uncomfortable questions about sustainability, dependence, and productivity.