Head to head · Productivity · updated Oct 25, 2026
Microsoft Copilot vs Superhuman
Microsoft Copilot scores 22 to Superhuman's 19 on public evidence for email writing & inbox management, and they rank #2 and #4 there. Only Microsoft Copilot has a free tier. Numbers below are the same public signals the ranking uses, recomputed nightly — nothing here is sponsored.
Microsoft Copilot
Microsoft's assistant, free on the web and Windows, and embedded in Word, Excel, PowerPoint, Outlook and Teams with Microsoft 365 Copilot.
+ Works inside the Office apps you already use, drafting Outlook replies, summarizing Teams meetings and turning Word docs into PowerPoint decks.
− Results inside Excel and PowerPoint are often shallow compared with the standalone chat, which makes the $30 business seat hard to justify.
Superhuman
A keyboard-driven email client for Gmail and Outlook with AI drafting in your voice, inbox triage and auto-summaries.
+ Write with AI learns your sent mail and produces replies that sound like you, and Auto Summarize puts a one-line gist atop every thread.
− Expensive for an email client, and it only works on Gmail and Microsoft 365 accounts.
Side by side
public evidence| Microsoft Copilot | Superhuman | |
|---|---|---|
| Evidence score / 100 | 22 | 19 |
| GitHub stars | closed source | closed source |
| Hacker News stories, 30d | 2 | 4 |
| Release-feed mentions, 30d | 0 | 0 |
| Last activity | – | – |
| Pricing | Free tier · Copilot Pro $20/mo; Microsoft 365 Copilot $30/user/mo | Paid · Starter from $25/mo |
| Platforms | web, windows, mac, ios, android | web, mac, windows, ios, android |
| Maker | Microsoft | Superhuman (Grammarly) |
Which one?
Pick Microsoft Copilot if
- you want the stronger public evidence (22 vs 19)
- you want a free tier to start on
Best for Microsoft 365 organizations.
Pick Superhuman if
Write with AI learns your sent mail and produces replies that sound like you, and Auto Summarize puts a one-line gist atop every thread.
Best for high-volume inboxes.