Notis vs Dimension vs Duet

Historical comparison. Dimension is shut down or no longer current.

Verdict

Notis aside, Duet has the highest support score, 61% across all 33 rows. Dimension scores 45% across 32 checked rows out of 33.

Their strengths differ: Duet for combining AI agents with human checkpoints and Dimension for rolling automation out to a team.

None of them documents Visual workflow builder, Loops and batch processing or Data mapping and transforms.

Only Notis documents Webhook or API trigger.

Capabilities and pricing

Capability comparison between Notis and the selected automation tools
Capability	View pricing	DimensionVisit site	DuetVisit site
Build & trigger
Visual workflow builder	—	—	—
Build workflows with natural language
Schedule trigger
App-event trigger
Webhook or API trigger		—	—
Email, form, or manual trigger	Manual: Test button / chat command
Logic & orchestration
Conditional branches	—	Partial	—
Loops and batch processing	—	—Historical: No loop or batch step	—
Data mapping and transforms	—	—	—
Custom code steps	PartialVia skills' scripts/, not a code step	—Historical: No code step	Partial
Reusable subflows	—	—Historical: No workflow-calls-workflow	Partial
Long-running workflows		Partial
AI & human control
AI model steps
Autonomous agents
Knowledge bases or RAG	Ultra-tier memory sources
Browser or computer use		—
MCP support
Human approval steps	—
Reliability & operations
Retries and error paths	—	—	Partial
Run history and logs		—Historical: No run history documented
Testing and debugging	Test button fires a real run on demand	—Historical: No test run or debug mode	Partial
Workflow versioning	—	—Historical: No workflow versions	—
Monitoring and alerts	—	—	—
Secret management	Masked env vars + encrypted tokens
Platform & governance
Ready-made app integrations	1,000+ apps
Workflow templates	PartialSingle-prompt automation templates	Historical: Workflow Marketplace by role	Partial
Managed cloud
Open source	—	—	—
Self-hosting	—	Not checked	—
SSO and role-based access	—	—	Partial
Audit logs and compliance	—	Partial
Shared team workspace		—
Usable free tier	Partial	—	—
Price	FREEPRO$13/moyr (rate on a yearly commitment)+2 more	Discontinued	Starter$20/moPro$50/mo+1 more

IncludedPartial— Not documentedNot checked

Ranked by support score

1. Duet

Cloud AI coworker for recurring operations and internal app building

A persistent, cloud-hosted AI coworker that runs a small business's recurring work on schedules, events, and demand, and builds and hosts the internal apps that work needs.

Best for: combining AI agents with human checkpoints

Documented strengths

AI & human control: AI model steps, Autonomous agents, Knowledge bases or RAG, Browser or computer use, MCP support and Human approval steps
Build & trigger: Build workflows with natural language, Schedule trigger, App-event trigger and Email, form, or manual trigger
Platform & governance: Ready-made app integrations, Managed cloud, Audit logs and compliance and Shared team workspace

The catch

The gap is workflow logic, with nothing documented for Conditional branches, Loops and batch processing and Data mapping and transforms.

Pricing

Starter$20/moPro$50/moMax$200/mo

$20–$200/month (7-day free trial, no card required) · no free tier · duet.so

How it differs from Notis: Duet is a company-facing automation coworker with its own managed VM, credit-metered scheduled/event workflows, and built-in app hosting; Notis is a personal and team assistant reachable from everyday channels (WhatsApp, iMessage, Telegram, Slack, email, voice) with an execution layer across model providers.

Visit Duet Duet alternativesSupport score: 61% across all 33 rows

2. 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: building and triggering workflows

Documented strengths

Build & trigger: Build workflows with natural language, Schedule trigger, App-event trigger, Webhook or API trigger and Email, form, or manual trigger
AI & human control: AI model steps, Autonomous agents, Knowledge bases or RAG, Browser or computer use and MCP support
Reliability & operations: Run history and logs, Testing and debugging and Secret management

The catch

The gap is platform and governance options, with nothing documented for Open source, Self-hosting, SSO and role-based access and Audit logs and compliance.

Pricing

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

Free–$149/mo · help.notis.ai

See Notis pricingSupport score: 56% across all 33 rows

3. Dimension

AI work assistant and workflow automation — discontinued

A discontinued web assistant that connected work apps, prepared briefings and ran scheduled or app-triggered workflows; Dimension shut down on 20 May 2026.

Best for: rolling automation out to a team

Documented strengths

AI & human control: AI model steps, Autonomous agents, Knowledge bases or RAG, MCP support and Human approval steps
Build & trigger: Build workflows with natural language, Schedule trigger, App-event trigger and Email, form, or manual trigger
Platform & governance: Ready-made app integrations, Workflow templates and Managed cloud

The catch

The gap is operational controls, with nothing documented for Retries and error paths, Run history and logs, Testing and debugging, Workflow versioning and Monitoring and alerts.

Pricing

Discontinued

Discontinued. Legacy marketing lists Free $0, Premium $29/mo, Pro $99/mo and Max $199/mo; FAQ prices conflict. · dimension.dev

How it differs from Notis: Dimension is a historical alternative and is unavailable to new buyers; its surviving documentation describes web, iMessage and Slack access and prompt-based workflows.

Dimension alternativesSupport score: 45% across 32 checked rows out of 33

Questions about this comparison

Which of Duet or Dimension scores highest in the evidence checked so far?

Duet, with 61% across all 33 rows. Dimension scores 45% across 32 checked rows out of 33.

How much do they cost?

Duet: $20–$200/month (7-day free trial, no card required); Dimension: Discontinued. Legacy marketing lists Free $0, Premium $29/mo, Pro $99/mo and Max $199/mo; FAQ prices conflict. These prices are not directly comparable, so we do not rank them.

Which of them can I try for free?

Duet does not have one and free-tier availability is not checked yet for Dimension.

What can none of them do?

None of them documents Visual workflow builder, Loops and batch processing, Data mapping and transforms, Workflow versioning, Monitoring and alerts or Open source.

Where does Notis fit in?

Notis is number 2 on this page. Against Duet: Duet is a company-facing automation coworker with its own managed VM, credit-metered scheduled/event workflows, and built-in app hosting; Notis is a personal and team assistant reachable from everyday channels (WhatsApp, iMessage, Telegram, Slack, email, voice) with an execution layer across model providers.

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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