Which AI assistant is right for you?
Dume.ai is an all-in-one AI executive assistant. It triages email, but also manages your calendar, updates Jira and Notion, posts to Slack, runs hands-off routines, and can be called on the phone. It has a genuine free plan, and paid plans start at $9/month with every integration included.
Jace AI (by Zeta Labs) is a focused email assistant. It drafts replies that learn your voice, auto-labels and organizes your inbox, supports up to 8 connected inboxes, and lets you search years of email history. Plans start at $20/month billed yearly after a 7-day trial.
No credit card required · Cancel anytime · Setup in under 5 minutes
Side by side
| Feature | Dume.ai | Jace AI |
|---|---|---|
| Product scope | All-in-one executive assistant | Email-first assistant |
| Free tier | Yes, no credit card required | 7-day trial only |
| Starting price | Free → from $9/mo | $20/mo billed yearly ($25 monthly) |
| Email triage & drafting | Core capability | Core capability, drafts in your voice |
| Multi-inbox support | Primary Gmail focus | 2 inboxes (Plus), 8 (Pro) |
| Email history search | Context from connected Gmail | 1 year (Plus), 3 years (Pro) |
| Calendar management | Yes, plans your day | Yes, unlimited calendars |
| Project tools (Jira, Notion, Linear) | Built in on every paid plan | Custom integrations/MCPs on Pro |
| AI phone calls | Call your assistant, two-way | Not available |
| WhatsApp access | Chat with Dume on WhatsApp | Not available |
| Autonomous routines | Plain-language, run on schedule | Inbox automation (labels, drafts) |
| Desktop AI agent | Dume Cowork (Mac & Windows) | Not available |
| Browser extension | Dume for Chrome | Not available |
| Setup time | Under 5 minutes | About 30 seconds to connect an inbox |
What you pay
Dume.ai
Dume offers a genuine free plan, no credit card required, so you can test it on real work before paying anything. Paid plans start at $9/month and every integration is included on all paid plans.
| Plan | Price | Best for |
|---|---|---|
| Free | $0 | Trying Dume on real work |
| GO | $9/mo | Daily personal use |
| PRO | $18/mo | Power users & professionals |
| MAX | $40/mo | Heavy operators & teams |
Annual billing discounts available on all paid plans.
Jace AI
Jace offers a 7-day free trial and a 30-day money-back guarantee, but no ongoing free tier. The cheapest plan is $20/month billed yearly ($25 billed monthly).
| Plan | Price | Notes |
|---|---|---|
| Plus | $20/mo yearly · $25 monthly | 10,000 credits, 2 inboxes, 1-year search |
| Pro | $40/mo yearly · $50 monthly | 20,000 credits, 8 inboxes, MCPs |
| Enterprise | Custom | White-glove setup, account manager |
Custom integrations and MCP connections require the Pro plan.
Pricing verdict
Dume costs less at every tier and has a real free plan. Jace's $20/month entry point buys deep email features, but Dume's $9/month GO plan covers email plus calendar, tasks, and every integration, and its $18/month PRO plan still undercuts Jace Plus billed monthly.
Five differences that matter
Email: depth vs. connected workflow
Dume triages your Gmail, drafts context-aware replies, and turns emails into follow-ups, calendar events, and tasks in Jira, Linear, or Notion. Email is one part of a connected workflow: the same assistant that reads the thread can update the task board and brief you before the meeting it produced.
Jace is purpose-built for email. It drafts replies that learn your personal voice, auto-labels and organizes your inbox by intent, supports multiple connected inboxes (up to 8 on Pro), and lets you search and chat with years of email history. If your entire workday lives in the inbox, this depth shows.
Verdict Jace wins on pure email depth: multi-inbox support and long searchable history are genuinely strong. Dume wins when email is connected to everything else: tasks, calendar, project tools, and briefings, so the work that starts in your inbox actually gets finished.
Beyond the inbox
Dume connects to Gmail, Google Calendar, Jira, Notion, Slack, Linear, Google Drive, and WhatsApp on every paid plan. It also ships Dume Cowork, a desktop AI agent for file work and reports, and Dume for Chrome, a browser extension for research, data extraction, and form filling.
Jace stays focused on email and calendars. Custom integrations and MCP connections are available, but only on the Pro plan ($40/month billed yearly), and they extend the email workflow rather than adding new product surfaces.
Verdict Dume wins clearly here. If you need an assistant across email, project management, files, and the browser, Dume covers surfaces Jace does not attempt.
AI phone calls & mobile access
One of Dume's most distinctive features: you can call your assistant on the phone. Ask for your morning briefing while commuting, hand off a task by voice, or have Dume call you with updates. You can also chat with Dume on WhatsApp from any device.
Jace operates inside your inbox and its web app. There is no phone-call channel and no WhatsApp access; you interact with it where your email lives.
Verdict Dume wins. If you want an assistant that's reachable when you're nowhere near a screen, two-way phone calls and WhatsApp make a real difference.
Automation: routines vs. inbox rules
Dume runs plain-language routines on their own schedule: "every weekday at 8am, summarize my unread email and post the top three priorities to Slack." Routines can span multiple tools: email in, task board updated, report delivered, without you touching anything.
Jace automates within the inbox: auto-labeling, smart organization, and drafted replies waiting for review. Its AWA-1 model can also execute multi-step web tasks initiated from your email context.
Verdict Both automate real work. Jace automates your inbox; Dume automates workflows across your whole toolset. Pick based on where your repetitive work actually lives.
Pricing & the free tier
Dume has a genuine free plan, no credit card required, with 100 credits per month to test it on real work. Paid plans start at $9/month, and every integration is included on all paid plans; you never pay extra to connect a tool.
Jace offers a 7-day free trial (no credit card) and a 30-day money-back guarantee, but no ongoing free tier. Plus is $20/month billed yearly ($25 monthly); custom integrations require Pro at $40/month billed yearly ($50 monthly).
Verdict Dume wins on price at every tier: a real free plan, a $9 entry point less than half of Jace's cheapest plan, and no integration paywall.
Choose the right tool
Choose Dume.ai if you…
- Want one assistant across email, calendar, tasks, and project tools
- Use Jira, Notion, Linear, or Slack every day
- Want to call your assistant on the phone or reach it on WhatsApp
- Want hands-off routines that run on their own schedule
- Want a real free plan before paying anything
- Also want a desktop AI agent and a Chrome extension included
Choose Jace AI if you…
- Live almost entirely in your inbox and want maximum email depth
- Manage multiple email accounts (up to 8 on Pro)
- Want to search and chat with years of email history
- Value drafts that closely learn your personal writing voice
- Are comfortable with a $20-40/month email-focused subscription
Try Dume alongside your existing tools
No need to cancel anything upfront. Run Dume alongside your current setup and compare the results on your own work.
- 1Create a free Dume accountNo credit card required. Setup takes under 5 minutes.
- 2Connect Gmail and CalendarDume starts triaging email and preparing your daily plan immediately.
- 3Add your work toolsJira, Notion, Slack, Linear, whatever your team runs on. All included.
- 4Set up one routineDescribe it in plain language: a morning briefing, an inbox summary, a weekly report.
- 5Call your assistantTry the phone channel: ask for your briefing or hand off a task by voice.
No credit card required · Cancel anytime · Setup in under 5 minutes
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FAQ
Frequently asked questions
Yes. Dume.ai has a free plan with no credit card required. Jace AI offers a 7-day free trial, but ongoing use requires a paid plan starting at $20/month billed yearly.
Still have questions? Email us at care@dume.ai
The bottom line
| What matters to you | Better choice |
|---|---|
| Real free plan to try before committing | Dume.ai |
| One assistant across email, tasks, and project tools | Dume.ai |
| AI phone calls and WhatsApp access | Dume.ai |
| Hands-off routines across multiple tools | Dume.ai |
| Lowest paid entry point ($9/mo vs $20/mo) | Dume.ai |
| Managing many inboxes (up to 8) | Jace AI |
| Searching years of email history | Jace AI |
| Email-only workflow, maximum inbox depth | Jace AI |
More comparisons: Dume.ai vs Martin AI · Dume Cowork vs Claude Cowork
Last updated July 2026 · Jace AI pricing and features verified from jace.ai in July 2026.