Now in beta

Your AI speaks for you.
You stay in control.

Side reads any chat open in your browser and drafts replies that sound like you — not a robot. Review, edit, send.

Get the Extension Side in action — AI reply draft in sidebar
How it works

Three steps to your AI alter-ego

01

Open any chat

WhatsApp, Slack, Discord, email. Side detects it automatically.

02

AI reads the context

Reads the last few messages, understands who's talking and what they want.

03

Review & send

Draft appears in the sidebar. Edit the tone. Hit send. Done.

Features

Built for the way you actually communicate.

Mood control
Slider from Formal to Casual. Adjust tone before every reply.
Persona presets
Work mode, Casual mode, Support mode. One tap, right voice.
Review before send
Every draft is editable. You're the editor, not the typist.
Works everywhere
WhatsApp, Slack, Discord, email — any chat in your browser.

"I save probably 90 minutes a day on WhatsApp replies alone. The Work persona is scary accurate — it sounds like me, not a chatbot."

Priya Sharma
VP Marketing at Remote Ventures

"Tried three AI writing tools before Side. They all sounded AI. Side actually gets my tone because it reads the conversation first."

Marcus Chen
Founder at Layr Studio

"Setup took 10 minutes. I had my DeepSeek key ready and it's been running ever since. Best $0 I spend on sales."

Sofia Andrade
Account Executive at Clearbit
Pricing

Start free. Upgrade when you want.

Free
Bring Your Own Key
You need a DeepSeek API key. Takes 2 minutes to get one free.
$0
Get Extension
Coming Soon
Pro
Side manages the AI. No API key needed.
$5/mo
  • Side manages your AI key
  • Priority support
  • Future pro models included
FAQ

Questions answered.

Do I need an AI API key?
Yes — Side is fully client-side and runs in your browser. You bring your own DeepSeek API key, which is stored only in your Chrome browser storage. We never see it.
Is my chat data stored?
Never. Side reads your conversations in real time inside your browser. No messages are sent to our servers — all context processing happens locally.
Which chat apps does Side support?
Any chat that runs in Chrome: WhatsApp Web, Slack, Discord, Gmail, Telegram, and more. If it's a web app, Side can read it.
How does the review mode work?
Side drafts a reply and shows it in the floating sidebar. You can edit it, adjust the tone slider, or change the persona — then hit send. Nothing goes out without your approval.
Is Side free?
Yes. The base extension is free — you just need a DeepSeek API key. A Pro tier with managed AI accounts is coming soon for users who don't want to manage their own key.