cursor

cursor-introduces-its-coding-model-alongside-multi-agent-interface

Cursor introduces its coding model alongside multi-agent interface

Keep in mind: This is based on an internal benchmark at Cursor. Credit: Cursor

Cursor is hoping Composer will perform in terms of accuracy and best practices as well. It wasn’t trained on static datasets but rather interactive development challenges involving a range of agentic tasks.

Intriguing claims and strong training methodology aside, it remains to be seen whether Composer will be able to compete with the best frontier models from the big players.

Even developers who might be natural users of Cursor would not want to waste much time on an unproven new model when something like Anthropic’s Claude is working just fine.

To address that, Cursor introduced Composer alongside its new multi-agent interface, which allows you to “run many agents in parallel without them interfering with one another, powered by git worktrees or remote machines”—that means using multiple models at once for the same task and comparing their results, then picking the best one.

The interface is an invitation to try Composer and let the work speak for itself. We’ll see how devs feel about it in the coming weeks. So far, a non-representative sample of developers I’ve spoken with has told me they feel that Composer is not ineffective, but rather too expensive, given a perceived capability gap with the big models.

You can see the other new features and fixes for Cursor 2.0 in the changelog.

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Company apologizes after AI support agent invents policy that causes user uproar

On Monday, a developer using the popular AI-powered code editor Cursor noticed something strange: Switching between machines instantly logged them out, breaking a common workflow for programmers who use multiple devices. When the user contacted Cursor support, an agent named “Sam” told them it was expected behavior under a new policy. But no such policy existed, and Sam was a bot. The AI model made the policy up, sparking a wave of complaints and cancellation threats documented on Hacker News and Reddit.

This marks the latest instance of AI confabulations (also called “hallucinations”) causing potential business damage. Confabulations are a type of “creative gap-filling” response where AI models invent plausible-sounding but false information. Instead of admitting uncertainty, AI models often prioritize creating plausible, confident responses, even when that means manufacturing information from scratch.

For companies deploying these systems in customer-facing roles without human oversight, the consequences can be immediate and costly: frustrated customers, damaged trust, and, in Cursor’s case, potentially canceled subscriptions.

How it unfolded

The incident began when a Reddit user named BrokenToasterOven noticed that while swapping between a desktop, laptop, and a remote dev box, Cursor sessions were unexpectedly terminated.

“Logging into Cursor on one machine immediately invalidates the session on any other machine,” BrokenToasterOven wrote in a message that was later deleted by r/cursor moderators. “This is a significant UX regression.”

Confused and frustrated, the user wrote an email to Cursor support and quickly received a reply from Sam: “Cursor is designed to work with one device per subscription as a core security feature,” read the email reply. The response sounded definitive and official, and the user did not suspect that Sam was not human.

Screenshot:

Screenshot of an email from the Cursor support bot named Sam. Credit: BrokenToasterOven / Reddit

After the initial Reddit post, users took the post as official confirmation of an actual policy change—one that broke habits essential to many programmers’ daily routines. “Multi-device workflows are table stakes for devs,” wrote one user.

Shortly afterward, several users publicly announced their subscription cancellations on Reddit, citing the non-existent policy as their reason. “I literally just cancelled my sub,” wrote the original Reddit poster, adding that their workplace was now “purging it completely.” Others joined in: “Yep, I’m canceling as well, this is asinine.” Soon after, moderators locked the Reddit thread and removed the original post.

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