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Archive From the archive of The Latest A.I. News
This is an archive page with the A.I. news of Wednesday 21 October 2026. This day was compiled afterwards from reports that appeared at the time, so it was not kept on the day itself; a lot may have changed since. Today's news is on The Latest A.I. News.
Compiled afterwards on
A critical PHP flaw, found with the help of AI tools, dominates the news. Meta announces a new share class with its quarterly results to pay for its AI buildout.
Two serious vulnerabilities in PHP, which runs on an estimated 70 percent of websites, reach back to PHP 5. The PHP Foundation released patches, and the NSA advises taking sites that cannot be patched quickly offline. Researchers found the flaws with AI help before attackers exploited them.
The shares go to existing holders as a dividend, so voting power and the founder's control stay unchanged. Meta can use them to raise capital, pay staff and make acquisitions. With its quarterly results the company reported $64 billion in revenue (up 26%) and 68% higher costs.
Meta says roughly a quarter of the people who set up Muse use it daily. Shopping is a leading activity, alongside tasks such as linking email and calendars. The app stays free for most users and Meta wants a share of commerce on the platform.
The free model has 40 billion parameters in total, with about 2.5 billion active per task. The company says its own automated research system helped with nearly every development stage and that Flint beats other models under 50 billion parameters on a well-known coding benchmark. It can be downloaded under an open-source license.
Walmart unveils an Agent Gateway that lets approved agents search inventory and buy on shoppers' behalf. Profiles arriving next month will track purchases per agent and allow approval requirements or spending limits. Amazon, meanwhile, has started blocking agents from its site.
OpenAI expands its advertising platform in ChatGPT and says more than 100,000 advertisers have already used it. The expansion brings the total to 89 countries.
The platform for building and testing software, including AI-generated code, raised $66 million at a $1 billion valuation. The company says annual recurring revenue grew 17-fold. Two months earlier it was valued at $550 million.
Next up: Sites not yet patched for the PHP flaws remain at risk; Meta is to work out its plan for the new share class.
Every day has its own page. They stay up for three months.
Everything here is a summary of reports from other media, not original research. The label (Certain, High, Medium, Low) is my estimate of how reliable the source is. The summaries are generated automatically with AI and may contain mistakes; read the article itself for the details (the star marks the leading source). Sources: leading A.I. and tech sites and the official blogs of the A.I. companies.
