Is Alexa Always Listening? What Smart Speakers Actually Send to the Cloud

The short answer

An Echo is always listening, but only for one thing: its wake word. It isn't recording your dinner conversation and sending it to Amazon. But three things are true that most quick answers leave out:

• Once the device hears its wake word, or something that sounds like it, what you say next goes to Amazon's cloud.
• Smart speakers mishear their wake words more often than most people assume, and when they do, they record and send whatever follows.
• Since March 28, 2025, Echo devices no longer offer any way to keep requests from being sent to the cloud.

So the honest answer is: Alexa isn't eavesdropping on everything, but anything it hears after waking up, intended or not, leaves your house.

How wake words actually work

Every mainstream smart speaker uses the same basic design. A small, low-power model on the device listens to a short rolling buffer of audio, a few seconds long, that's constantly overwritten. That model has one job: decide whether the last moment of sound was the wake word.

If it decides no, the audio is discarded and never leaves the device. If it decides yes, the speaker wakes up, usually lights up, and starts streaming your request to the company's servers, which work out what you said and what to do about it.

Google describes its version plainly: in standby mode the device processes short snippets of audio to detect an activation, and if no activation is detected those snippets aren't sent to Google. Once it detects "Hey Google", it sends your request to Google's servers. Amazon's Echo devices work the same way: wake-word detection stays on the device, and the request itself goes to the cloud.

What changed in March 2025

For a short time, a few Echo models offered a privacy setting called Do Not Send Voice Recordings, which processed requests on the device instead of in the cloud. It was only available on three devices (the fourth-generation Echo Dot, the Echo Show 10 and the Echo Show 15).

Amazon discontinued it on March 28, 2025. As TechCrunch reported, Amazon told customers the change was needed for new generative AI features that rely on the processing power of Amazon's cloud, around the launch of its Alexa+ assistant. Users who'd had the setting on were switched to Don't Save Recordings, which still sends recordings to the cloud but deletes them after processing. Amazon also told affected users that choosing not to save recordings means losing Voice ID, the feature that recognizes who in the household is speaking.

The practical result is that every Alexa request, on every Echo, is now processed in Amazon's cloud.

Accidental activations: the real privacy issue

If speakers only ever woke when someone said the wake word, the privacy question would be simple. They don't.

In a 2020 study, researchers at Northeastern University and Imperial College London played 125 hours of TV shows to a range of smart speakers and counted how often they woke up by mistake. Depending on the device, accidental activations ranged from about 1.5 to 19 a day, and some recorded as much as 43 seconds of audio. Words that merely sounded close to the wake word were enough. The Apple and Microsoft devices in that study woke by mistake more often than the others.

Every false wake is a moment of conversation sent to a server that nobody meant to send. Most of it is harmless TV dialogue. Some of it won't be.

What happens to your recordings once they're sent

This is where companies differ most, and where policies change over time, so check the current settings yourself:

Apple's January 2025 statement says Siri is designed to do as much processing as possible on the device, that Apple doesn't keep audio recordings unless users opt in, and that requests are tied to a random identifier rather than your Apple account.

Records can also outlast your expectations. In 2023, the FTC and Department of Justice charged Amazon with keeping children's Alexa voice recordings for years and undermining parents' deletion requests; Amazon agreed to a $25 million civil penalty. That case was about children's data specifically, but it's a useful reminder that "deleted" and "kept" are company decisions you can't see into.

How to reduce what Alexa shares

If you're keeping your Echo devices, these steps meaningfully cut what leaves the house:

1. Turn off recording storage. In the Alexa app's privacy settings, choose not to save voice recordings, and review your voice history from time to time.
2. Delete what's already there. The same privacy settings let you delete past recordings, including ones from false wakes.
3. Use the microphone off button during conversations you'd rather not risk, and in rooms where private things are discussed: bedrooms, home offices, the room where you take medical or legal calls.
4. Change the wake word if household speech or a favorite show keeps setting it off.
5. Turn down "personalization" and skill permissions you don't use, such as location and contact access.
6. Think about placement. Fewer speakers in fewer rooms means fewer chances of a false wake.

Is there a way to have a voice assistant without the cloud?

Yes, though not from the big three. Home Assistant, the open-source home automation platform, has its own voice assistant called Assist. It can run on your own hardware: wake word detection, speech-to-text, the logic that turns your request into an action, and text-to-speech. Home Assistant's documentation puts it simply: run locally, your voice commands stay private. It also offers a cloud option for people who prefer convenience, so "local" is a choice you make during setup.

Local voice used to mean rigid commands like "turn on kitchen lights". That's changing. Home Assistant can now connect Assist to an AI model running on a computer in your house, which handles more natural requests without sending them anywhere. We explain the trade-offs in our guide to local AI vs cloud assistants.

The honest downsides: a local system takes more setup, smaller local models make more mistakes than the giant cloud ones, and it won't know the latest sports scores unless you connect it to something that does.

Voice isn't the only way in

Many people who are uneasy about a microphone in every room are happy to type. You can run a home by text message instead: "Is the garage closed?", "Set the house to 68 for Friday." No microphones need to be listening at all. Our guide to texting your house over iMessage or WhatsApp explains how that works and where the messages travel.

Should you get rid of your Echo?

Not necessarily. It depends on what you use it for and what is said near it.

• Keep it if you mostly use it for music, timers and the weather in a kitchen or family room, and you're comfortable with Amazon's cloud handling those requests.
• Move or mute it if it sits in a bedroom, a home office or anywhere you have confidential calls. Those are the rooms where a false wake matters most.
• Replace it if it's the hub for your locks, cameras and alarm, and you'd rather the house didn't depend on a company's servers to lock its own front door. A local hub keeps working when the internet doesn't, and you control what leaves the house.

Many households end up with a mix: a speaker for music in the kitchen, and a private, local system running the house itself.

How Kotoh Home approaches it

We install a private AI home assistant that runs on a dedicated computer in your house. Requests are handled by the AI on that computer, not an AI company's servers. You can talk to it, text it, or both, and microphones are only placed in rooms where you want them. If you're wondering what that costs compared with a speaker in every room, see our breakdown of what a private AI home assistant costs.