Aori vs Atomic Bot vs Vellum

Verdict

Notis aside, Vellum has the highest support score, 77% across 32 checked rows out of 33. Atomic Bot scores 52% across all 33 rows and Aori scores 52% across 22 checked rows out of 33.

Their strengths differ: Vellum for keeping the product and your data under your own control, Atomic Bot for remembering context between conversations and Aori for rolling a shared assistant out to a team.

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Capabilities and pricing

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Capability comparison between Notis and the selected assistants
Capability	View pricing	AoriVisit site	Atomic BotVisit site	VellumVisit site
Where you can use it
WhatsApp			Vendor-published inbound WhatsApp	—Not a channel (checked 2026-09-02)
iMessage		—	—	PartialPlugin; bring your own Photon/Linq line
Telegram			Named first in the vendor's channel list	Your own BotFather bot
Slack		—		Two-way via Socket Mode; own app
Email		—	—	PartialOwn AgentMail inbox; flagged; Super+
SMS or a phone number	PartialInbound calls only, no SMS	—	—	PartialTwilio calls / BYO SMS line
Voice messages	Voice notes + live calls	Not checked	—	Live Voice Mode + phone; push-to-talk
Web or desktop app	Web and desktop app			Web app + native macOS app
Its own iPhone or Android app	—	—	'Atomic Hermes' — first-party iPhone app	iOS (App Store) + Android (Google Play)
Bring your own AI
Runs on your own Claude plan		—	—	PartialClaude Code via ACP, coding tasks only
Runs on your own ChatGPT plan		—	—	PartialCodex CLI sign-in inherited, coding only
Bring your own API key	—			OpenAI, Gemini, OpenRouter, Ollama
Works inside your own coding agent		Not checked	—	—Consumes MCP; no server of its own
You choose which model runs your work				Profiles per workspace, chat and action
What it can do
Ready-made app integrations	1,000+ apps	Partial	—	Partial10 OAuth apps; 75-skill catalogue
Creates and edits documents			—	Document skill saves to workspace
Save your own reusable instructions		Not checked	Partial	Custom skills; schedule or run on demand
Browses the web for you		Not checked		Sandbox headless + Chrome extension
Posts to social media for you		Not checked	—	Posts to X via managed OAuth
Joins and records your meetings	—	Not checked	—	Not checkedNo meeting bot documented
Memory
Remembers you between conversations				Persistent concept wiki + background
Reads your existing files and apps	Notion, Gmail, Drive, Granola, web			Google, Notion, Outlook, GitHub, MCP
Runs without you
Runs on a schedule or a trigger				Cron/RRULE, watchers, playbooks
Reminds and nudges you				Notify-mode schedules to any channel
Computers it can use
Gives it a cloud computer of its own	1h/mo (Pro) to uncapped (Ultra)	—		1 vCPU/2 GiB free to 4 vCPU/16 GiB
Controls your own computer	Shell and apps, via the desktop app	Not checked	—	Shell + apps on macOS via desktop app
Connects to MCP servers on your computer		Not checked	—	stdio local servers via desktop app
Trust & control
Open source	—	Not checked		MIT; runtime, CLI, clients, gateway
Run it on your own server	—	Not checked		Local Mac, own GCP VM, or any Linux host
Says it will not train on your data	Covers Notis and its LLM providers	—	Partial	No-train pledge; collection opt-out
Published security certification	PartialSub-processors certified; Notis is not	—	—	—None published (checked 2026-09-02)
Plans & support
Free plan does the product's main job	Partial			PartialBase free forever; credits pay-as-you-go
Shared team workspace		Not checked	—	—Single-user; 'Not a team tool'
Price	FREEPRO$13/moyr (rate on a yearly commitment)+2 more	Free Aori download (bring your own AI provider)	Free (local install)Base$19/mo+2 more	BaseFreeMighty$30/mo+3 more

IncludedPartial— Not documentedNot checked

Ranked by support score

1. Notis

Personal AI assistant

Notis is a personal AI assistant you message from WhatsApp, iMessage, Telegram, Slack or email, and reach from your own coding agent through its MCP server.

Best for: running on the AI subscription you already pay for

Documented strengths

Where you can use it: WhatsApp, iMessage, Telegram, Slack, Email, Voice messages and Web or desktop app
What it can do: Ready-made app integrations, Creates and edits documents, Save your own reusable instructions, Browses the web for you and Posts to social media for you
Bring your own AI: Runs on your own Claude plan, Runs on your own ChatGPT plan, Works inside your own coding agent and You choose which model runs your work

The catch

The gap is published guarantees about your data, with nothing documented for Open source and Run it on your own server.

Pricing

FREEPRO$13/moyrPRO+$39/moyrULTRA$99/moyr

Free–$149/mo · help.notis.ai

See Notis pricingSupport score: 80% across all 33 rows

2. Vellum

Personal AI assistant

An open-source (MIT) personal AI assistant with its own always-on cloud machine, memory and identity, reachable from web, Mac, iPhone, Android, CLI, Telegram, Slack, email and phone.

Best for: keeping the product and your data under your own control

Documented strengths

Where you can use it: Telegram, Slack, Voice messages, Web or desktop app and Its own iPhone or Android app
What it can do: Creates and edits documents, Save your own reusable instructions, Browses the web for you and Posts to social media for you
Computers it can use: Gives it a cloud computer of its own, Controls your own computer and Connects to MCP servers on your computer

The catch

The gap is team and plan options, with nothing documented for Shared team workspace.

Pricing

BaseFreeMighty$30/moCustom (from $50/mo)$50/moSuper$100/moUltra$200/mo

Free-$200/mo (Base free, Mighty $30, Super $100, Ultra $200; Custom from $50/mo) plus pay-as-you-go credits ($1 = 1 credit) · vellum.ai

How it differs from Notis: Vellum gives each user a persistent cloud computer, optional self-hosting and Mac control, but no WhatsApp or team workspace; Notis is a managed messaging-first assistant with broader ready-made integrations.

Visit Vellum Vellum alternativesSupport score: 77% across 32 checked rows out of 33

3. Atomic Bot

Managed hosting and installer for open-source personal AI agents (OpenClaw / Hermes)

A one-click installer and dedicated cloud VPS for running the open-source OpenClaw or Hermes personal AI agent on your Mac, PC or a server of your own.

Best for: remembering context between conversations

Documented strengths

Where you can use it: WhatsApp, Telegram, Slack, Web or desktop app and Its own iPhone or Android app
Memory: Remembers you between conversations and Reads your existing files and apps
Runs without you: Runs on a schedule or a trigger and Reminds and nudges you

The catch

The gap is connected tools, with nothing documented for Ready-made app integrations, Creates and edits documents, Posts to social media for you and Joins and records your meetings.

Pricing

Free (local install)Base$19/moPro$39/moMax$79/mo

Free local install; Cloud $19–$79/month · atomicbot.ai

How it differs from Notis: Atomic Bot packages the open-source OpenClaw/Hermes agents into an installer and a vendor-provisioned VPS; Notis is a channel-first assistant Notis itself operates end to end, with its own support, billing and integrations across WhatsApp/iMessage/Telegram/Slack/email/voice.

Visit Atomic Bot Atomic Bot alternativesSupport score: 52% across all 33 rows

4. Aori

Local-first personal AI agent

A local-first AI assistant with memory and scheduled routines, reachable in its app, Telegram and WhatsApp.

Best for: rolling a shared assistant out to a team

Documented strengths

Where you can use it: WhatsApp, Telegram and Web or desktop app
Memory: Remembers you between conversations and Reads your existing files and apps
Runs without you: Runs on a schedule or a trigger and Reminds and nudges you

The catch

The gap is messaging channels, with nothing documented for iMessage, Slack, Email, SMS or a phone number and Its own iPhone or Android app.

Pricing

Free Aori download (bring your own AI provider)

Aori is free to download; users pay their chosen AI provider directly for usage. · free tier available · aori-ai.app

How it differs from Notis: A local-first, bring-your-own-key agent whose chat and memory live on the user’s device.

Visit Aori Aori alternativesSupport score: 52% across 22 checked rows out of 33

Questions about this comparison

Which of Vellum, Atomic Bot or Aori scores highest in the evidence checked so far?

Vellum, with 77% across 32 checked rows out of 33. Atomic Bot scores 52% across all 33 rows and Aori scores 52% across 22 checked rows out of 33.

How much do they cost?

Vellum: Free-$200/mo (Base free, Mighty $30, Super $100, Ultra $200; Custom from $50/mo) plus pay-as-you-go credits ($1 = 1 credit); Atomic Bot: Free local install; Cloud $19–$79/month; Aori: Aori is free to download; users pay their chosen AI provider directly for usage. These prices are not directly comparable, so we do not rank them.

Which of them can I try for free?

Vellum, Atomic Bot and Aori have a free tier.

Which of them work in WhatsApp?

Atomic Bot and Aori do. Vellum does not.

Where does Notis fit in?

Notis is number 1 on this page. Against Vellum: Vellum gives each user a persistent cloud computer, optional self-hosting and Mac control, but no WhatsApp or team workspace; Notis is a managed messaging-first assistant with broader ready-made integrations.

How we checked

We checked each product's official pages against the same 33 capability rows. The support score is the share of checked rows a product documents. Partial support counts half, and rows not checked yet stay out of the score. Notis chose the rows and is scored the same way. The score does not measure reliability, reply speed or writing quality. Last checked 21 August 2026.

Sources

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