AI makers are flooding the market with a new wave of coding agents promising to relieve human programmers of busy work.

The big picture: Automating the routine aspects of technical labor will almost certainly transform and downsize the tech industry workforce — but there's no guarantee it will alleviate software development's biggest headaches.

Driving the news: Microsoft Monday announced a new AI coding agent for GitHub Copilot that's good for "time-consuming but boring tasks."

• "The agent excels at low-to-medium complexity tasks in well-tested codebases, from adding features and fixing bugs to extending tests, refactoring code, and improving documentation," Microsoft's post says.
• GitHub's move follows Friday's announcement by OpenAI of Codex, a "research preview" of a new coding agent that can "work on many tasks in parallel."
• Notably, the GitHub Copilot agent is powered not by Codex or any other tool from Microsoft partner OpenAI, but instead by Anthropic Claude 3.7 Sonnet, per Microsoft.

The intrigue: Tech leaders have sent mixed messages on just how much work they see ahead for programmers.

• Amazon Web Services' boss Matt Garman caused a stir last year when he suggested the need for human coding could disappear within two years. However, he later told Axios that his comments were taken out of context.
• "I think it's incredibly exciting time for developers," he told us last year. "There's a whole bunch of work that developers do today that's not fun."
• "If you think about documenting your code, if you think about upgrading Java versions, if you think about looking for bugs, that's that's not what developers love doing. They love thinking about, 'How do I go solve problems?'"

Why it matters: Business transformations that start in Silicon Valley usually make their way into the wider economy.

• Silicon Valley's "dogfooding" tradition ensures that it will avidly apply new technologies to its own business first.
• Both Microsoft and Google are now claiming that roughly 30% of the code they produce is AI-written.

Coding agents, like other generative AI tools, continue to "hallucinate," or make stuff up.

• But programs, unlike other kinds of language products, have a built-in pass-fail test: Either they run or they don't.
• That gives programmers one early checkpoint to guard against bad code.

Yes, but: AI-generated code likely also contains tons of other errors that don't show up today.

• That will cause nightmares in the future as programs age, get used more widely, or face unexpected tests from unpredictable users.

Zoom out: The software industry's assumption that what works inside tech will work everywhere else could be sorely tested when these techniques get pushed out beyond Silicon Valley.

• AI's usefulness in writing code may not easily transfer to other kinds of work that are less abstract and more rooted in physical reality — witness the many setbacks and challenges the autonomous vehicle industry has faced.

Between the lines: Nobody doubts that AI means tech firms will write more code using fewer employees. But no one yet knows exactly where these companies will continue to find competitive advantage.

• AI models are much likelier to be interchangeable than human organizations and cultures.

What's next: As coding agents shoulder routine labor, product designers and creative engineers will use "vibe coding" — improvisational rough drafting via "throw it at the wall and see what works" AI prompting — to do fast prototyping of new ideas.

The bottom line: The biggest challenges in creating software tend to arise from poorly conceived specifications and misinterpretations of data, both of which are often rooted in confusion over human needs.

• Today's large language models are ill-equipped to tackle those problems.
• But software developers who excel at navigating the boundaries between human desire and machine capability should continue to find themselves in demand.

Microsoft is adding Grok — the AI model produced by Elon Musk's xAI — to the growing list of third-party AI models it offers via its cloud service, the company announced yesterday.

Why it matters: Microsoft is trying to convince developers and businesses that its AI strategy is a better bet than those from its partner OpenAI and a slew of competitors, including Google and Amazon.

Driving the news: Microsoft will offer customers the option to run versions of xAI's Grok 3 and Grok 3 mini models hosted and billed directly by Microsoft, the company announced Monday at its Build conference.

• Microsoft says it now offers 1,900 models hosted by itself or its partners.
• The Verge reported earlier this month that the Grok deal was in the works.

Microsoft also announced NLWeb, an open project designed to "simplify the creation of natural language interfaces for websites — making it easy to turn any site into an AI-powered app," per a blog post.

• NLWeb will allow websites to build conversational interfaces using "the model of their choice and their own data," Microsoft says.

What they're saying: "This emerging vision of the internet is an open agentic web, where AI agents make decisions and perform tasks on behalf of users or organizations," Microsoft said in its post.

The big picture: It's a busy week of developer conferences.

• In addition to Microsoft's Build event in Seattle, Google hosts its I/O conference Tuesday and Wednesday in Mountain View, while Anthropic will have its first developer conference on Thursday in San Francisco.

• Advice from Axios CEO Jim VandeHei on how companies can adapt to "the biggest, fastest, most consequential technological shift in history." (Axios)
• The "one big" budget bill House Republicans are advancing includes a ban on state AI regulations. (CNN)
• The actors' union SAG-AFTRA has filed an unfair labor complaint against Fortnite maker Epic for using AI to recreate the voice of James Earl Jones. (Variety)

A few bits of Lego excitement to share:

1. "Lego Masters," the brick-building reality show, is back on Fox, with the Season 5 premiere last night.
2. Lego is announcing today a gumball machine-like prize dispenser. Included are various minifigures paying tribute to past themes, including Fabuland and space.
3. I'm working on a couple of my own creations celebrating local women's sports teams, which I will share soon.