Chorus vs Prio
Prio (prio.sh) is an EU-hosted AI chief of staff aimed at founders, CEOs, agency owners, freelancers, and accountants. It connects to your email, calendar, and business tools to triage the inbox, draft replies in your tone, protect focus time, chase follow-ups, and prepare meetings, with an approval-required-by-default model where high-risk actions always need explicit sign-off. It runs on Anthropic's Claude and other AI models via API, with all data hosted in Frankfurt and no-training terms binding its AI providers.
Chorus is a platform for hiring AI employees — autonomous AI agents that each run on their own always-on computer, connect to 70+ tools, and handle real work end to end. Here’s how the two compare, honestly.
At a glance
| Comparison dimension | Chorus | Prio |
|---|---|---|
| Always-on computer | Every agent runs on its own dedicated always-on machine (4 vCPU / 8 GB) with a real browser — it keeps working when your laptop is closed. | No — runs as a managed EU-hosted cloud service (Claude and other models via API); operations are on-demand plus scheduled briefings/anticipation, with no per-user VM or browser. |
| Tool integrations | 70+ integrations out of the box — Gmail, Slack, Notion, GitHub, Linear, Stripe, and more. The agent handles the auth. | 10 native integrations (Gmail, Outlook, Google Calendar, Slack, Notion, GitHub, Google Drive, LinkedIn, Attio, Moneybird) plus MCP support for compatible tools; Starter is limited to Gmail + Google Calendar. |
| Messaging channels | Web chat, iMessage/SMS, Slack, WhatsApp, and Telegram — and it messages you proactively when work is done. | Web chat primarily (a progressive web app, voice-first on mobile); Business plan (€199) adds a bot on Slack, Telegram, and Microsoft Teams; Pro adds AI voice calling; no iMessage/SMS or WhatsApp and no native mobile app. |
| Persistent memory | Persistent memory and files live on the agent's own disk, so it remembers last week's work. | Yes — year-over-year contact and preference memory (gifts, restaurants, introductions) and behavior learning over time. |
| Background automations | Scheduled jobs (crons) and background automations are built in — agents work while you're away. | Daily morning briefings, a 1-30 day anticipation engine that starts prep work early, and workflow automations on Pro+ (it also suggests automations from detected repeating patterns); execution stays risk-tiered — low-risk auto-executes, high-risk always needs approval. |
| Pricing | Free plan to start (no card). Pro $20/mo for one always-on agent; Max $200/mo; extra agents $50/mo. | Starter €29/mo (30 chats/day), Pro €79/mo (100 chats/day), Business €199/mo (unlimited chats); 14-day free trial, 30-day money-back guarantee. |
Where Prio shines
- Purpose-built executive-assistant workflows out of the box: inbox triage and drafting in your tone, calendar defense with buffers and focus-time protection, meeting prep, follow-up chasing, voice-note transcription, and daily morning briefings.
- An anticipation engine that looks 1-30 days ahead (board prep, contract renewals, key meetings, birthdays) and starts the work before you ask.
- Strong, verifiable privacy posture: all data stored in Frankfurt (eu-central-1) with no replication outside the EEA, GDPR compliance, AI providers bound by API terms and DPAs prohibiting training on your data, and a full action log for every operation.
- Year-over-year relationship memory — it recalls last year's gift, the restaurant that worked, and who introduced you — plus behavior learning over time.
- A carefully staged trust model: risk-tiered approvals (low-risk actions like thread replies and personal events auto-execute, medium-risk requires review, high-risk actions like external API calls and bulk operations always require sign-off), which suits executives who want control over anything sent in their name.
Where it falls short
- No dedicated computer or browser per user: Prio operates through API integrations (10 native ones plus MCP), so it cannot log into arbitrary websites, run code, or handle work outside its integration surface.
- Approval-required by default and high-risk actions always need explicit confirmation — it is designed as a supervised assistant, not an autonomous employee, so it cannot fully complete external-facing work while you are away beyond its low-risk auto-execute tier.
- Chat caps on lower tiers (30 chats/day on Starter, 100/day on Pro) limit heavy or continuous use, and Starter connects only Gmail and Google Calendar.
- Narrow channel reach: web chat (a progressive web app, voice-first on mobile) is the primary interface; the multi-platform bot (Slack, Telegram, Teams) is gated to the €199 Business plan, and there is no iMessage/SMS or WhatsApp channel and no native mobile app.
- Scope is deliberately focused on email, calendar, tasks, and relationships for executives; it is not a general-purpose worker for coding, data work, or broad multi-step projects, and background execution is mostly scheduled briefings and anticipation rather than continuous operation.
Choose Prio if…
- EU data residency is a hard requirement: Prio stores and processes everything in Frankfurt with no replication outside the EEA, GDPR compliance, and no-training terms binding its AI providers.
- You want a focused email-and-calendar chief of staff with tight, risk-tiered approval controls over anything sent in your name, rather than broad autonomy.
- You mainly need executive-assistant work — briefings, triage, drafting, meeting prep, follow-ups, relationship memory — working immediately at a €29-79/month price point.
- You want an AI phone agent for outbound voice calls (included in the Pro plan).
Choose Chorus if…
- You need an agent with its own always-on cloud computer and a real Chromium browser that can log into any website — not just work through a fixed set of API integrations.
- Your work spans more than email and calendar: coding, research, documents, and multi-step projects across 70+ integrations, with files and typed memory persisting on the agent's own disk.
- You want the agent to reach you where you already are — iMessage/SMS, WhatsApp, Telegram, Slack — and message you proactively when background work finishes.
- You want multiple agents, model choice (Claude, GPT-5.6, Grok, Gemini), and true unattended background execution via crons and automations rather than approval-gated assistance.
Common questions
Is Prio better than Chorus?
They solve different problems. Prio is a focused, approval-first email and calendar chief of staff with EU-only hosting, best for executives who want tight control over what gets sent in their name. Chorus hires out autonomous AI employees that each get their own always-on cloud computer and browser, 70+ integrations, and messaging channels like iMessage and WhatsApp — better when you want work fully done in the background, not just assisted.
How much does Prio cost?
Prio's Starter plan is €29/month with 30 chats per day and Gmail plus Google Calendar management; Pro is €79/month with 100 chats/day, workflow automations, and AI voice calling; Business is €199/month with unlimited chats, GitHub, invoice scanning, and a Slack/Telegram/Teams bot. All plans start with a 14-day free trial and carry a 30-day money-back guarantee.
Can Prio work autonomously in the background?
Partly. It delivers daily morning briefings, looks 1-30 days ahead to start prep work like board packets and renewal reminders, and supports workflow automations on Pro and Business plans. But it is approval-required by default — only low-risk actions like thread replies and personal events auto-execute, while high-risk actions always need explicit sign-off — and it has no computer or browser of its own.