Mem.ai
Note-taking with no folders; AI-chat over notes. Focused on connections between notes rather than hierarchy.
Active · Verified 2026-10-22 · fresh as of 2026-10-22 · 41 cited facts, 5 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Type
- AI-first note-taking vendor fix
- Tier
- T2
- Created
- 2017 (first funding Apr 2021) third-party fix
- Latest release
- not applicable — not OSS fix
- License
- not applicable — not OSS fix
- GitHub
- not applicable — no GitHub repo fix
- Funding
- $24M $110M val Venture · 2022-11 third-party fix
- Freshness
- 2026-10-22 fix
- Layer
- agent-infra repo fix
- Licensing
- commercial vendor fix
Memory taxonomy
- storage
- vector
- retrieval
- similarity
- persistence
- long-term
- update
- overwrite
- unit
- document
- governance
- user-controllable
- conflict
- none
When to use
Optimised for: personal-knowledge-management UX + AI-augmented note-taking
Anti-fit: not for enterprise / programmatic use; not for compliance-regulated workloads
Pros & cons
Pros
Auto-organized timeline memory with proactive surfacing; clean iOS / Mac experience.
Cons
Closed system; smaller user base; product direction has shifted multiple times.
Claims & capabilities
$28.6M total funding over 2 rounds; latest $23M Series A (Nov 2022) led by OpenAI Startup Fund. Note: distinct from Mem0 (memory infrastructure for AI apps; raised $24M from YC/PeakXV/Basis Set in October 2025 — different company)
Technical surface
- API surface
- searched not found
- Backend storage
- custom
- Deployment
- Managed-only
- Embedding model
- locked
- Multi-tenancy
- hard-isolation
- MCP
- searched not found
- A2A
- searched not found
- OpenTelemetry
- searched not found
Alternatives to Mem.ai → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other personal ai / pkm / lifelogging memory in the catalog, ranked by inbound references.
- Screenpipe T3
Local-first 24/7 screen and audio recorder that indexes what you see/hear and exposes it as context/memory to AI agents (MCP, API); open-source Rewind/Recall alternative. Y Combinator S26
- Amplenote T2
Tags + bidirectional links + task/calendar integration. "Task Score" priority matrix. AmpleAI plugin supports OpenAI, Anthropic, Gemini, Grok, DeepSeek, Ollama.
- Apple Notes + Apple Intelligence T1
Folder + tag hierarchy; iCloud sync. Writing Tools (proofread / rewrite / summarise) across all note content; audio transcription + AI summary; smart search; reminders from to-dos.
- Capacities T2
Object-graph (people, books, projects as typed objects); daily notes; bidirectional links. AI chat grounded in current note; AI property auto-fill; in-editor writing assistant; pattern-finding across objects.
- CORE (RedPlanet) T3
Always-on 'personal AI OS' that indexes email, meetings, GitHub, Linear, Slack and assistant chats into a temporal knowledge graph with fact classification and intent-driven retrieval, plus MCP integrations. reports 88.24% on LoCoMo (vendor claim)
- Craft AI T1
Hierarchical block-based documents + nested pages (no native graph). In-document AI assistant: summarise, rewrite, translate, Q&A over docs, proofread.
Sources (40 cited facts, 5 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is AI-first note-taking vendor
- What it does & what's distinct Note-taking with no folders; AI-chat over notes. Focused on connections between notes ra… vendor
- Claims / benefits $28.6M total funding over 2 rounds; latest $23M Series A (Nov 2022) led by OpenAI Startu… third-party
- Modalities text vendor
- Created 2017 (first funding Apr 2021) third-party
- Funding $24M $110M val Venture · 2022-11 third-party
- Customers / scale 11-50 ppl AI-powered note-taking users, consumer third-party
- Pricing Free; Plus $9/mo; Pro $29/mo; Pro 2×/5×/10×/20× at $49/$99/$149/$199/mo vendor
- Compliance SOC 2 Type II vendor
- Data handling Never sells personal information; data hosted on Google Cloud; annual pen tests vendor
- Deployment Managed-only vendor
- HQ US third-party
- Founders / pedigree Kevin Moody (CEO) and Dennis Xu (co-founder) vendor
- Memory volume / scale no scale claim vendor
- Backend storage custom vendor
- Multi-tenancy hard-isolation vendor
- Encryption at-rest + in-transit vendor
- Embedding model locked vendor
- Tombstoning hard-delete supported vendor
- Schema evolution schema with migration vendor
- Namespace primitives per-tenant vendor
- Contradiction handling always overwrite (last-write-wins) vendor
- Forgetting policy user-controlled forget vendor
- Validated verticals consumer / individual (knowledge workers, students, researchers) vendor
- Time to running <10min (hosted SaaS sign-up or app download) vendor
- Anti-fit not for enterprise / programmatic use; not for compliance-regulated workloads vendor
- Optimised for personal-knowledge-management UX + AI-augmented note-taking vendor
- Adjacent infrastructure self-contained app; some require iCloud / Google Drive vendor
- Pros Auto-organized timeline memory with proactive surfacing; clean iOS / Mac experience. vendor
- Cons Closed system; smaller user base; product direction has shifted multiple times. vendor
- Project & sources mem.ai vendor
- cost-input-usd-per-mtok 0 vendor
- cost-output-usd-per-mtok 0 vendor
- cost-tier free vendor
- cost-pricing-model free-tier vendor
- cost-last-verified 2026-06-29 vendor
- architecture-deployment-locus cloud vendor
- licensing-bucket commercial vendor
- positioning-platform-vs-product product vendor
- taxonomy-three-layer-rollup agent-infra repo
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)