Cassidy AI vs Dust vs Mem vs Personal AI
A side-by-side look at scores, pricing and features — with RECATOOLS' ASEAN-aware verdict for each.
Cassidy AI
AI assistants grounded in your company knowledge base
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Dust
Build custom AI assistants for your team
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Mem
AI-native note-taking with automatic organization
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Personal AI
Private AI trained on your own memory — now aimed at telcos
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| RECATOOLS Score | 6.7 / 10 | 7.4 / 10 | 6.8 / 10 | 6.5 / 10 |
| Capability | — | |||
| Value for money | — | |||
| Ease of use | — | |||
| ASEAN readiness | — | |||
| API quality | — | |||
| Pricing | Freemium | Freemium | Freemium | Paid |
| Free tier | — | — | — | Limited free trial; core product is paid-only |
| Paid from | — | — | — | — |
| Has API | ✗ | ✓ | ✗ | ✓ |
| Open source | ✗ | ✗ | ✗ | ✗ |
| Free to use | ✗ | ✗ | ✗ | ✗ |
| Users | — | — | — | — |
| Founded | — | 2022 | 2019 | 2020 |
| Maker | — | — | Mem Labs | Suman Kanuganti, Sharon Zhang, Kristie Kaiser |
| Verdict | Cassidy's differentiator is the knowledge base sitting under everything. It syncs Google Drive, SharePoint, OneDrive, Notion, and Confluence in near real time, so assistants answer from current company data instead of a... |
Dust is one of the stronger platforms for building custom AI agents over a company's own knowledge and tools — connect Notion, Slack, GitHub, Google Drive, Salesforce and more, then assemble model-agnostic agents (across... |
Mem is an AI-first note-taking app that de-emphasises folders in favour of automatic organisation, smart search, and AI that surfaces related notes and answers questions across your knowledge base. It suits individuals w... |
Personal AI's original pitch was distinctive: train a language model only on your own messages, notes, and documents, so it recalls and answers as an extension of you, with an explicit data-ownership promise. That memory... |
| Full review → | Full review → | Full review → | Full review → |
Comparisons cover up to 4 tools. Scores are RECATOOLS editorial assessments; verify current pricing on each vendor's site.