Comparison
Syniaps or Lindy?
A San Francisco startup with $50m raised, three products in eighteen months, an "AI employee" sold per seat inside Slack
What Lindy sells: "Today, we kill the AI agent and introduce the AI employee": no more workflows to build, you mention @Lindy in a channel and she triages email, sits in meetings, produces dashboards and remembers everything said around her.
Syniaps
4.0 / 5
Lindy
3.3 / 5
Surveyed on 15 September 2026 from the publisher's public pages, cited at the foot of this page. Offers change: check with the publisher before you decide.
Lindy at a glance
- Who
- Crivello Corp, San Francisco, 2023
- Published by Crivello Corp (d/b/a Lindy), founded by Flo Crivello (ex-Uber, Teamflow), with around $50m raised from Menlo Ventures, Coatue, Battery and a16z. SOC 2 Type II (audited by Johanson Group), HIPAA with a BAA on Enterprise, and claimed GDPR and PIPEDA compliance; G2 4.9/5 across 171 reviews but Trustpilot 1.7/5 across 39, and three successive repositionings (a no-code agent builder in 2024, an iMessage executive assistant in February 2026, the Slack Teammate on 10 August 2026).
- What
- A Slack AI employee with shared team memory
- A private Lindy in DMs (inbox, calendar, daily brief, call preparation, Meet/Zoom/Teams recording) and a team Lindy in the channels, with Skills (named procedures), Routines (scheduled or triggered), Files (memory as editable text files) and Artifacts (dashboards, reports, internal sites hosted on lindy.link). A memory agent runs roughly every fifteen minutes to index Slack, meetings, Notion, Confluence and Drive folders into a personal memory and a workspace memory.
- How it gets set up
- Install in Slack, connect email, mention
- An admin installs the Slack app, each member clicks "Connect Slack to Lindy" on their first mention, then links Google or Microsoft (email, calendar), their phone or iMessage, and their tools (Notion, HubSpot, Linear, MCP). For each account you choose "Always allow" or "Ask for approval" on writes. Routines are described in natural language ("Every weekday at 9, summarize my unread email") and Lindy fills in the name, trigger and schedule; skills are written by hand or in chat, and the dry run acts as the test before activation.
- Which models
- Every model on offer, DeepSeek behind the scenes
- The documentation promises "Model selection, all models" on every plan (a purely cost-based choice in credits), with no formalised In-depth or Maximum mode. Inference runs at American or Chinese providers: on 10 August 2026 the CEO said the foundation runs on DeepSeek ("everything is DeepSeek right now"), a hundred times cheaper, which raises the question of where inference actually happens.
- Price
- $29.99 to $199.99 per user
- Plus at $29.99 (3,000 credits), Pro at $99.99 (15,000 credits, computer use), Max at $199.99 (35,000 credits), Enterprise by quote (SSO, SCIM, HIPAA), monthly only, no free plan, and seven days free on seats added through Slack. Credits cost roughly a cent each, are pooled across the workspace and do not roll over; top-ups are $10 per 1,000, overage is billed at double, voice is $0.19 a minute and $10 per number.
- Who it is for
- Slack teams of 5 to 50
- The real target: American or English-speaking teams that live in Slack and want to hand over email, meetings, scheduling and small deliverables without building a workflow. Genuinely strong at team context captured passively and at per-seat entry; weak for a freelancer outside Slack, a French small business or any organisation that requires the EU.
Point by point
| Criterion | Lindy | Syniaps | Advantage |
|---|---|---|---|
| Intelligence | Every model selectable per task, a DeepSeek foundation, no step-up mode | Claude, GPT or the model of your choice on a plan, with Standard, In-depth and Maximum modes | Syniaps |
| "Execute" | Computer use from Pro, hosted artifacts, routines; no terminal, no code repository, no documented background work | Files, code, terminal, a browser with captured cookies, long jobs, hosted apps, GitHub | Syniaps |
| Knowledge | A memory agent that indexes Slack, meetings, Notion, Confluence and Drive every 15 minutes | Synapses built from documents, OCR, retrieval, a full cloud mirror and email | Level |
| Setup | Slack plus Google/Microsoft in minutes, but routines and skills described by you | A short wizard, then the agent proposes the automations and the human confirms | Syniaps |
| Learning | Memory as versioned files, skills in early access, corrections not capitalised on their own | Corrections, skills and preferences retained, and what it learns proposed for approval | Syniaps |
| Sovereignty | A multi-tenant US SaaS (Digital Ocean, Azure, GCP), SOC 2 Type II, HIPAA, no EU residency | A dedicated OVH machine in France, per-user isolation, AI processed in Europe if the company chooses, no SOC 2 | Syniaps |
| Entry and price | Immediately self-serve, $29.99 to $199.99 a seat, opaque credits, overage at double | A 7-day trial open within minutes, a card with no charge before it ends, from €99 excl. tax with AI included | Level |
| Scope | Email, calendar, meetings, Slack, a thousand integrations, MCP, iMessage, voice | Email, calendar, meetings, WhatsApp, LinkedIn, MCP, sites without an API, development and hosting | Syniaps |
What each one does better
Where Syniaps wins
A dedicated machine in France
Each customer has their own isolated OVH server, where Lindy pools everyone on American cloud with no European residency option.
Full execution, not just Slack
Syniaps writes files and code, drives a terminal and a browser, hosts apps and publishes to GitHub, where Lindy stops at artifacts and computer use.
The agent proposes, the human confirms
Automations are born in conversation as cards to approve, whereas Lindy waits for you to describe every routine and every skill.
Frontier models under control
Claude, GPT or the model of your choice, with explicit step-up modes (Standard, In-depth, Maximum), where Lindy offers none.
A readable cost, AI included
A fixed plan with a share of AI per person and €10 of partner credits a month, against pooled credits that do not roll over, are billed at double on overage and are called opaque on Trustpilot.
Where Lindy wins
Context captured passively
The memory agent rereads Slack, meetings, Notion and Confluence every fifteen minutes and builds the team memory on its own, with no documents handed to it.
In within ten seconds
Install the Slack app, mention @Lindy, connect Google or Microsoft: the seat is live within minutes, with seven days free and no machine to provision.
Lives where the team works
One Lindy per person in DMs and a team Lindy in the channels, plus iMessage and SMS, where Syniaps imposes its own web interface.
Certifications already obtained
An audited SOC 2 Type II, HIPAA with a BAA, SSO and SCIM on Enterprise, which Syniaps cannot yet put in front of a security review.
Native meetings and voice
Meet, Zoom and Teams recording, a meeting library and a phone agent at $0.19 a minute, all inside the product.
Two caveats on its promise
- Three products in eighteen months (agent builder, iMessage assistant, Slack Teammate): the AI employee promise dates from 10 August 2026, the public changelog stops in October 2025, skills are still in early access and the old price grid is still lying around on its pages.
- Reliability and billing are disputed: Trustpilot 1.7/5 with 77% one-star reviews (emails sent to the wrong recipient, "black box" credits, charges after cancellation), and G2 notes that "when Lindy makes errors while building agents, it costs a lot of credits".
The ten criteria, scored and justified
Intelligence
Frontier models (Claude, GPT, Gemini) and ways to step up a gear
Syniaps 5/5
Claude Sonnet 5, Opus 5 and Fable 5, GPT through Codex, or the model of your choice; Standard, In-depth and Maximum modes.
Lindy 3/5
Every model is selectable on every plan, but the foundation runs on DeepSeek and no step-up mode exists.
Execution power
Actually acts: files, code, browser, sites without an API, long-running work
Syniaps 5/5
Files, code, terminal, a browser for sites without an API, long jobs in the background, hosted apps.
Lindy 3/5
Computer use from Pro, hosted artifacts and routines, but no terminal, no file management and no documented long-running background work.
Company knowledge
A base built and maintained on its own from documents, email and cloud storage
Syniaps 4/5
Synapses built by the agent, OCR, a full cloud mirror; still young on very large volumes.
Lindy 4/5
A memory agent indexes Slack, meetings, Notion, Confluence and Drive on its own every fifteen minutes, but with no OCR and no document mirror.
Zero setup
Nothing to brief, trigger or tick; the tool proposes, the human confirms
Syniaps 4/5
A short wizard, and the agent proposes its automations in conversation; site connections still have to be made once.
Lindy 3/5
Installation takes minutes, but every routine and every skill has to be described by the user; Lindy does not propose them.
Continuous learning
Remembers corrections and preferences without being asked to
Syniaps 4/5
Corrections, skills and preferences are retained and proposed for approval; no learning across customers yet.
Lindy 3/5
Memory grows continuously in versioned files, but nothing turns a correction into a skill unless you write it.
Autonomy
Missions and automations server-side, computer switched off, human approval on sensitive moves
Syniaps 4/5
Missions and scheduled actions run server-side with your computer off, with approval cards; mission ceilings still need tuning.
Lindy 4/5
Routines scheduled or triggered in the cloud, a dry run, and "Ask for approval" per account on anything sent.
Integrations and connections
Everyday tools, MCP, cloud storage, email, sites without an API
Syniaps 4/5
Email, cloud storage, meetings, WhatsApp, LinkedIn, MCP, sites without an API; fewer native connectors than a Zapier.
Lindy 4/5
A thousand integrations, MCP, Slack, Google, Microsoft, meetings, iMessage and computer use, though email reliability is disputed in reviews.
Sovereignty and security
EU hosting, per-customer isolation, EU or on-premise inference, certifications
Syniaps 3/5
A dedicated machine in France (OVH), strong per-user isolation and AI processed in Europe if you choose; no on-premise option and no certification.
Lindy 2/5
SOC 2 Type II and HIPAA, but a multi-tenant SaaS on American cloud, DeepSeek inference and no published EU residency.
Teamwork
Shared spaces, roles, delegation, company-wide memory
Syniaps 4/5
Company sources connected once, shared synapses, role profiles, shared skills and conversations, shared mailboxes in missions; no SSO and no fine-grained roles.
Lindy 4/5
Native Slack, Member/Admin/Owner roles, pooled credits, team skills and files, SSO and SCIM on Enterprise.
Price and access
Total cost (tool + AI + machine) against what you get, and how easily you start
Syniaps 3/5
A dedicated machine, AI included and a 7-day trial that opens within minutes, from €299 excl. tax a month; a card is required for the trial and there is no free tier.
Lindy 3/5
Self-serve entry at $29.99 a seat, but opaque credits that do not roll over, overage at double and a 1.7/5 on Trustpilot.
Verdict
Two company memories: captured in Slack, or built on a dedicated machine
Lindy
Lindy is the Slack team's AI employee: quick to install, good at ambient context, limited to what a chat can produce.
Natural fit: English-speaking teams of 5 to 50 already organised around Slack, with no European residency requirement.
Syniaps
Syniaps is the intelligence that genuinely acts: files, code, sites without an API, hosted apps, on a French machine that belongs to the customer alone.
Natural fit: European companies that hand over end-to-end missions and want their data and their secrets at home.
Lindy proves that passively captured context (Slack, meetings) is now expected; Syniaps must capture it too, without giving up real execution.
Add continuous capture of conversations (Teams, Slack, meetings) to the synapses so memory does not depend on documents alone, and lead with the dedicated machine and the plan with AI included against Lindy's billing complaints. Do not chase Slack as the single interface, nor a free plan: the ground Syniaps holds is long-running execution and sovereignty, not team chat.
Public sources (24)
- https://www.lindy.ai
- https://www.lindy.ai/pricing
- https://www.lindy.ai/security
- https://www.lindy.ai/privacy
- https://docs.lindy.ai/index.md
- https://docs.lindy.ai/pricing.md
- https://docs.lindy.ai/account-billing/usage.md
- https://docs.lindy.ai/teammate/setup.md
- https://docs.lindy.ai/start-here/team-setup.md
- https://docs.lindy.ai/teammate/routines.md
- https://docs.lindy.ai/teammate/skills.md
- https://docs.lindy.ai/teammate/files.md
- https://docs.lindy.ai/teammate/artifacts.md
- https://docs.lindy.ai/integrations/mcp.md
- https://docs.lindy.ai/resources/security.md
- https://www.lindy.ai/changelog
- https://chat.lindy.ai/login
- https://www.cognitiverevolution.ai/lindy-teammate-flo-crivello-on-multiplayer-agents-memory-why-he-d-ban-the-chinese-models-he-uses/
- https://www.usecarly.com/blog/lindy-ai-review/
- https://www.cloudtalk.io/blog/lindy-ai-pricing/
- https://blog.saner.ai/lindy-ai-reviews/
- https://www.trustpilot.com/review/lindy.ai
- https://ainora.lt/ai-teammate/providers/lindy
- https://ff.co/flo-crivello-lindy/
Lindy is a trademark of its publisher, cited here for the purpose of objective comparison. Syniaps is neither affiliated with nor a partner of that publisher. Found an error in this comparison? Write to us at [email protected] and we will correct it.