Deck is an assistant you reach by plain email, and people look past it for three reasons in our data. No pricing is shown on official pages (the pricing page returned 404), so you cannot budget before signing up. You can only connect by CC or forwarding today, with other methods marked as coming soon. And the privacy and docs pages were unavailable, so data handling terms could not be reviewed.
ChatGPT is the broad option: a free plan, and Plus (consumer) at $20 per month for writing, research and analysis. Notion AI suits people whose notes and tasks already live in Notion; Plus is $12 per member per month, with a free option. Microsoft Copilot is the one to check if your daily work is in Outlook, Word and Excel: it connects to those apps, and Microsoft 365 Personal is $9.99 per month, also with a free tier.
"Better suited" below is based on documented features and pricing from our verified profiles, not on a head-to-head test. Prices are USD as published by each vendor.
Deck and its alternatives, as their sites look today
Our own captures of each vendor's public pages. Click a frame for the full-size image.
Deck homepage. hellodeck.ai, captured Oct 1, 2026ChatGPT homepage. platform.openai.com, captured Oct 13, 2026Notion AI homepage. notion.com, captured Oct 1, 2026Microsoft Copilot homepage. copilot.microsoft.com, captured Oct 1, 2026
Why people look beyond Deck
No pricing shown on official pages You cannot budget or compare cost before signing up.
Other connection methods marked as coming soon The assistant can only be reached by CC or forward today.
Requires an account You must create an account before testing it.
Taken from the documented limitations in our Deck profile.
Almost every tool (uploads, images, voice, deep research, Codex) has plan-dependent usage caps that OpenAI states can change over time, and the API is billed separately from every ChatGPT subscription.
Full AI needs Business or Enterprise, and even there a rolling six-hour and monthly usage allowance applies; premium models, Custom Agents and Workers consume separately purchased Notion credits.
Price not stated. The pricing page returned 404 and free access is not stated.
Which Deck alternative is cheapest?
Microsoft Copilot via Microsoft 365 Personal at $9.99 per month, then Notion AI Plus at $12 per member per month and ChatGPT Plus at $20 per month. All three also list a free option.
Why look for a Deck alternative?
No published pricing, connection limited to CC or forwarding, and unavailable privacy and docs pages.
Which alternative works inside my email and documents?
Microsoft Copilot is described as connected to Word, Excel, PowerPoint, Outlook and Teams.