Slack CEO Denise Dresser is leaving the company and joining OpenAI as the company’s chief revenue officer, multiple sources tell WIRED. Marc Benioff, the chief executive of Salesforce, which owns Slack, shared news of Dresser’s departure in a message to staff on Monday evening.

At OpenAI, Dresser will manage the company’s enterprise unit, which has been growing rapidly this year. She will report to chief operating officer Brad Lightcap. She starts next week.

“We’re on a path to put AI tools into the hands of millions of workers, across every industry,” said OpenAI CEO of Applications Fidji Simo in a statement to WIRED. “Denise has led that kind of shift before, and her experience will help us make AI useful, reliable, and accessible for businesses everywhere.”

Dresser has been at Salesforce for 14 years, according to Benioff’s message. Prior to becoming CEO, she held a number of executive roles in Salesforce’s enterprise sales unit. She was appointed CEO in 2023, after the previous CEO, Lidiane Jones, departed for the chief executive role at Bumble. (Jones served as Slack’s CEO for about a year.)

The company that eventually became Slack was founded in 2009. By 2014 it had become a fast-growing application for workplace chat and collaboration tools. In 2021, the company was acquired by Salesforce for nearly $28 billion. Much of the founding staff of Slack, including cofounders Stewart Butterfield and Cal Henderson, left within a few years of the acquisition. Over time, some of Slack’s operations were absorbed into the larger structure of Salesforce, and there were reports of culture clashes between the employees of the once-small startup and the enterprise behemoth.

Rob Seaman, Slack’s current chief product officer, will become interim CEO of Slack, according to two sources with direct knowledge of the executive changes.

Representatives for Slack hadn’t responded to WIRED’s requests for comment at the time of publication.

In Dresser’s tenure as Slack’s CEO, she oversaw the rollout of several large scale AI features, including AI-generated meeting summaries and an integration with Salesforce’s AI agents. Earlier this year, when Elon Musk took on a prominent role in the US government, Dresser occasionally took to X to show support, saying she agreed that federal employees should be required to send bullet-pointed emails about what they’ve accomplished, and sending a “thumbs up” emoji to a post about President Donald Trump signing an executive order mandating federal agencies to work with Musk’s DOGE.

Paresh Dave and Maxwell Zeff contributed to this report.

Update: 12/9/2025, 2 PM EDT: WIRED has corrected how long Dresser was employed by Slack and Salesforce.

Awesome Accessories

Which karaoke accessories you need will depend on what kind of system you buy. For example, if you’re buying a portable Bluetooth speaker that doubles as a karaoke machine with traditional microphone inputs, the first thing you’ll need is a good microphone like the Shure SM58 and a cable (or two). If your device offers only quarter-inch inputs, you’ll want to add an XLR to quarter-inch cable or an XLR to quarter-inch adapter.

That’s a great start, but even if your machine comes with built-in wireless mics, there are some good accessories worth considering to raise the experience a notch or two.

A Mic, Stand, Cable (and Adapter)

The Shure SM58 ($109) is the most popular stage mic on Earth for a reason: they’re bulletproof and they sound great. If you need of a mic, we highly recommend picking up the SM58; they’re probably what you’ve used at your local juke joint.

Our favorite mic stands are from the German brand K&M ($83), but you can totally get away with an Amazon Basics Mic Stand ($23) at home. I like colorful microphone cables like these ($12). If you need one, snag a quarter-inch to XLR adapter ($10 for two) so that your mic can plug into every karaoke machine you find.

Shure SM58 Microphone

Photograph: Parker Hall

A Vocal Effects Box

If you want to mess with the way voices actually sound, or to create cool harmony lines with yourself on the fly, we highly recommend the new Antares Headrush VX5 pedal ($299). This thing can make you perfectly in tune, but it can also do things like stack layers of your own voice on top of or below each other. You can even hook up an instrument and play along with tunes and have it match the key of your axe.

Photograph: Parker Hall

A Portable Projector

If you’re not using a TV in your living room, it’s an awesome idea to grab a cheap but quality portable projector. We like the latest small model from Anker ($530), because it is relatively affordable and includes a decent pair of speakers for when you’re watching movies outside and don’t want to hook up a PA.

A Streaming Stick for Casting to Your TV

If you don’t already have a way to cast content from your phone to your TV or projector, we highly recommend any of the latest 4K streaming devices. These all have a way to share stuff from phones to screens, and you can download YouTube or other karaoke apps.

Cool Lights

Ambience is a key part of a good karaoke party. We really love this light from Soundboks ($299), who also make big party speakers. It can sync to your music and is USB-C rechargeable for off-grid vibes.

Photograph: Parker Hall

There’s no way to recharge the ring. Migicovsky says he didn’t want yet another gadget to charge every day, so instead, the Pebble Index has non-rechargeable silver oxide hearing aid batteries designed to last 2 years with average use. Once the device’s battery is nearly dead, users will receive a notification in the app, and the idea is you’ll buy a new Pebble Index—an idea that’s easier to get behind knowing the ring costs just $75, though the price will jump to $99 after the first batch. (You’ll also be able to send your old Index to the company for recycling.)

When your audio is sent to your phone, an open source speech-to-text AI model processes it locally to convert your voice notes to text. Then, an on-device large language model will categorize the audio, deciding whether it’s a reminder, a timer, or a general note. A feed shows all your memory logs, and you scroll through it to find and listen to each clip. None of this data is ever sent to the cloud; it all stays on your phone. “These are your innermost thoughts,” Migicovsky says. “You don’t want to send them anywhere.”

By default, all of your musings with the ring are handled by the Pebble app. So if you had it set a reminder, you’ll get one from the Pebble app. However, you can customize the destination if you prefer to use your own service. If you use the Notion app for notes and tasks, for example, you can set it up so that your reminders and thoughts will be sent there.

Broad Strokes

The open source nature of the Pebble app means there’s no limit to customization. You press and hold the button to log a note, but you can have a single press trigger an action. Migicovsky says he set his to play or pause music, and a double-press switches tracks. But you can set it to take a photo remotely or activate a smart home routine. There will be an actions category in the Pebble app store where folks can publish their custom actions.