7 Best Superhuman Go Alternatives in 2026
Superhuman Go is the AI assistant from Superhuman, the company formerly called Grammarly. It shows up wherever you type: underlines in a doc, a side panel in your browser, a teammate in Slack, plus desktop and mobile apps. It comes with agents for writing, email, research and a daily brief, and on paid plans you can build your own that run on a schedule or when an email or Slack message arrives. You can start free.
People shop around for specific reasons. The Email Assistant is “powered by Superhuman Mail,” and Mail sits on the Business plan at $33 a member a month billed annually. On every plan below Enterprise, your content trains Go’s models unless you opt out. And superhuman.com sits at 2.0 out of 5 on Trustpilot, with complaints about billing and support.
The quick answer: Carly is the best Superhuman Go alternative if what you want is an assistant that runs your email, calendar and phone by your rules. It works across every Gmail and Outlook account you have, acts the moment something happens in thousands of apps, and plugs into ChatGPT, Claude, Grok Bot, Meta Muse and Perplexity, so you can use it inside the AI you already chat with. Customer data isn’t used to train AI models. If you mostly want writing help as you type, stay with Go.
Superhuman Go alternatives compared
| Tool | What it’s best at | Where you use it | Acts on its own | Best for |
|---|---|---|---|---|
| Carly | Email sorting, calendar work, calls and texts, by your rules | Email, SMS, Slack, web, ChatGPT, Claude | Yes, on events in thousands of apps | Running your inbox, calendar and phone |
| Superhuman Go | Writing help and suggestions where you type | Browser, desktop, mobile, Slack | Custom agents on schedules, emails or Slack messages | Writing and in-the-moment help |
| Lindy | AI executive assistant over text | iMessage, SMS, Slack, web | Yes | Text-your-assistant feel |
| Fyxer | Inbox sorting and drafts | Inside Gmail or Outlook | Sorts and drafts | A tidier inbox |
| ChatGPT | General chat with connected apps | Web, desktop, mobile | Tasks on a schedule or documented app events | General AI work |
| Claude | Long documents and analysis | Web, desktop, mobile | Scheduled tasks on a clock | Writing and analysis |
| Microsoft 365 Copilot | AI inside Outlook, Word and Teams | Microsoft 365 apps | Limited | All-Microsoft companies |
1. Carly
Go’s idea is help that shows up while you work. Carly’s is work that gets done while you don’t. You set rules in plain English, and it follows them the same way every time.
- Email sorting you can trust. Every new message gets one of the Gmail labels or Outlook folders you already use. Promotions get trashed, urgent mail gets you a text, and replies wait in Drafts in your voice. It works across every inbox at once, personal and work, Gmail and Outlook. How triage works.
- Real calendar work. CC Carly on a thread and it finds the time across all of your Google and Microsoft calendars, books it, and handles the reschedule. Group polls and booking pages are free.
- Calls and texts. Carly answers your business line, books callers, texts reminders and calls new leads back within a minute, from your own number.
- Starts on events, not just schedules. A form submission, a deal stage change, a payment, a calendar booking: Carly connects to thousands of apps and acts when something happens.
- Lives inside your AI chat. Add the Carly connector to ChatGPT, Claude, Grok Bot, Meta Muse or Perplexity and set up rules from there. “When a client emails, text me a summary” becomes a workflow that runs in the cloud.
- Custom agents. Build agents with their own name, email address, permissions and memory: one for the inbox, one for scheduling, one for follow-ups.
- Private by default. Customer data, Google and Microsoft data included, is not used to train AI models.
Best for: people who want their inbox, calendar and phone handled, not just their writing improved.
Pricing: Free Zapier-style workflows; AI agents from $35/month.
2. Lindy
Lindy is an AI executive assistant you text over iMessage or SMS, or reach in Slack. It drafts email in your voice, schedules meetings, takes notes and sends a daily brief.
Best for: the closest feel to a human assistant you text.
Pricing: $49.99 per active user a month, with a credit allowance.
Limitations: credit-based, so heavy months cost more or pause. See Lindy alternatives.
3. Fyxer
Fyxer works inside Gmail or Outlook, sorting mail into categories, drafting replies in your voice and taking meeting notes.
Best for: anyone who wanted Go’s Email Assistant without moving to Superhuman Mail.
Pricing: from $49 a user a month for one inbox; several inboxes are on the Team plan.
Limitations: labels and drafts, so sending and follow-through stay with you. See Fyxer alternatives.
4. ChatGPT
ChatGPT connects to Gmail, Google Calendar, Slack and many other apps through plugins, and runs scheduled tasks. OpenAI documents event-started tasks for new Gmail messages, Slack messages and GitHub activity.
Best for: general AI work with some app access.
Pricing: free tier; Plus from $20 a month.
Limitations: event triggers cover the apps OpenAI documents, and a second Microsoft account works only “where supported.” Add the Carly plugin for every Outlook and Gmail account and triggers on thousands of apps. See Can ChatGPT manage my inbox?
5. Claude
Claude reads, drafts and sends Gmail with your approval, manages Google Calendar, and runs scheduled tasks hourly, daily or weekly in the cloud.
Best for: writing, long documents and analysis.
Pricing: free tier; Pro from $20 a month.
Limitations: scheduled tasks run on a clock, not on events, and it holds one Gmail account. Add the Carly connector for both. See Can Claude schedule tasks?
6. Microsoft 365 Copilot
Copilot sits inside Outlook, Word, Excel and Teams, summarizing threads, drafting replies and pulling context from your Microsoft 365 data.
Best for: companies that run entirely on Microsoft 365.
Pricing: sold per user on top of Microsoft 365 business plans.
Limitations: Microsoft-only, and it drafts rather than acting on its own. See Microsoft Copilot alternatives.
7. Gemini
Gemini is built into Gmail, Calendar, Docs and Drive for Google Workspace users, with a side panel that summarizes, drafts and searches.
Best for: Google Workspace teams who want AI inside the apps they already use.
Pricing: included with Google Workspace business plans.
Limitations: Google-only, one account at a time, and you do the sending. See Gemini alternatives.
What Superhuman Go users complain about
From superhuman.com’s low-star Trustpilot reviews:
- Paying for the wrong plan. One reviewer bought Pro and found the app they wanted required Business (October 2026).
- Account and support. “Cannot even delete my account or contact support” (September 2026).
- Billing after a cancelled trial. A reviewer cancelled a free trial and was charged the next month anyway (June 2026).
- AI sending things it shouldn’t. “It send out random messages that are super out of context” (May 2026).
Carly sends only by the rules you set, with approval steps where you want them, and you can cancel from your account.
Which Superhuman Go alternative fits
- Inbox, calendar and phone handled by your rules, across every account: Carly
- An assistant you text like a person: Lindy
- A cleaner inbox with drafts, inside Gmail or Outlook: Fyxer
- General AI chat: ChatGPT or Claude, with the Carly connector for the doing
- All-Microsoft or all-Google company: Copilot or Gemini
- Writing suggestions everywhere you type: stay with Superhuman Go
FAQ
What is Superhuman Go?
Superhuman Go is an AI assistant and agent platform from Superhuman, formerly Grammarly. It offers writing suggestions as you type, a side-panel chat, a Slack bot, an Email Assistant, a Daily Brief and custom agents, across browser extensions, desktop and mobile apps.
Is Superhuman Go free?
There’s a free plan with limited chat. Pro is $12 a member a month billed annually ($15 monthly), and Business, which adds Superhuman Mail, is $33 billed annually ($40 monthly). Carly offers free Zapier-style workflows; AI agents from $35/month.
Does Superhuman Go train on my data?
Superhuman’s plan comparison lists model training as opt-out on Free, Pro and Business, and off by default on Enterprise. Carly doesn’t use customer data to train AI models.
Can Superhuman Go manage my email?
Its Email Assistant sorts mail and drafts replies, and it’s powered by Superhuman Mail. Carly sorts, drafts, trashes promotions and texts you about urgent mail across every Gmail and Outlook account you connect, with no new email app.
Is there a Superhuman Go alternative that answers calls?
Yes. Carly answers your business line, books callers on your real calendar and texts them confirmations, alongside email and calendar work.
Ready to automate your busywork?
Carly schedules, researches, and briefs you—so you can focus on what matters.
See what people say
"Before Carly, I relied on a Calendly link, but the whole process felt impersonal and not very professional. Carly changed that by handling all the back-and-forth, so I'm no longer stuck in endless email threads trying to line up schedules.
Now Carly reaches out to candidates, shares my real-time availability, lets them pick a slot, then sends a Zoom link and drops it straight into my calendar. She sends reminders to both of us before each call, which has significantly reduced no-shows and last-minute confusion.
On top of scheduling, Carly acts like a full executive assistant, sending me my schedule the night before so I can prepare for each call. It reminds me of the old x.ai assistant, but Carly is noticeably smarter, faster, and better suited to my healthcare recruitment business."
