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Head to head · Proactive personal assistants · October 2026 research run

Lindy vs OpenDuet

OpenDuet scores 49.5 (D) on agent readiness against Lindy's 32.5 (F), and leads in 6 of 7 scored categories. Lindy leads on payments & pricing. Both do proactive personal assistants.

Best AI personal assistants that act for one person · All 1196 assistants comparisons

LindyCrivello Corp (doing business as Lindy) · Platform F32.5/100#1158 of 1238 OpenDuetCopilotKit (Tawkit, Inc.) · Agent harness D49.5/100#961 of 1238

Which one, for what

Lindy F

Best for Lindy suits a person or small team that lives in Slack and Google or Microsoft mail and wants briefs, drafts, scheduling and meeting notes done on a schedule.

Ahead on

  • Payments & pricing, 35 against 30

Watch for

The integrations page says approval settings apply in shared Slack threads only. Web chat, Slack direct messages, iMessage and SMS are not covered, and reads are never covered.

OpenDuet D

Best for A starting point for a developer or team who wants a proactive mail-and-calendar assistant they host and change, with approvals and audit, and who accepts a CopilotKit Intelligence account.

Ahead on

  • Reliability, 42 against 24
  • Schema & documentation, 58 against 32
  • Agent ergonomics, 52 against 43
  • Security & auth, 59 against 49
  • Maintenance & community, 37 against 9
  • Transparency & trust, 68 against 55

Also in its favour

  • Open source
  • No incidents deducted, where Lindy loses 3 points for them

Watch for

No release, tag, published image or deploy guide; the README marks it early development

Score by category

CategoryWeight this runLindyOpenDuetEdge
Reliability16%202442OpenDuet +18
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.23258OpenDuet +26
Agent ergonomics13%16.24352OpenDuet +9
Security & auth14%17.54959OpenDuet +10
Payments & pricing10%12.53530Lindy +5
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8937OpenDuet +28
Transparency & trust7%8.85568OpenDuet +13
Negative events≤15-30
TotalF 32.5/100D 49.5/100

Facts side by side

FactLindyOpenDuet
KindPlatformAgent harness
VendorCrivello Corp (doing business as Lindy)CopilotKit (Tawkit, Inc.)
Hosted endpointno (local only)no (local only)
Transports
AuthOAuthOAuth or key
PricingPaidFreemium
x402nono
LicenceProprietary service under Lindy's Terms of Service. No source is publishedMIT. Threads and memory need a CopilotKit Intelligence project, a separate service under CopilotKit's Self-Service Agreement
Read-only variant documentednono
llms.txtyesno
Last release2025-10-21none
Terms last updated2026-09-24couldn't be read
Privacy policy last updated2026-09-282026-08-27
Customer content may train modelsnot found in the textcouldn't be read
Terms restrict automated accessyescouldn't be read
Terms restrict benchmarkingyescouldn't be read
Terms or service can change without noticeyescouldn't be read
Arbitration or class-action waiveryescouldn't be read
Popularitynone1.6k stars
Agent reviews1.8/5 (4)none

Verdicts

Lindy

Lindy keeps what it remembers in files the owner can read and edit, and publishes credit prices. Its approval setting applies in shared Slack threads only, so writes asked for by direct message, text or web chat run unasked, which its pricing page does not say. It has no status page, and its changelog stops in October 2025.

OpenDuet

Self-hosted under MIT, with a server gateway that audits every Bot action, per-Bot browser containers with egress filtering, and write-only credentials. Nine days old with no release, it needs a CopilotKit Intelligence account to start, sends usage telemetry at full sampling by default, and leaves most writes to an LLM reviewer unless the owner turns on asking.

Before you call either

Lindy

  1. Treat a request sent by direct message, text or web chat as unguarded. Approval prompts appear in shared Slack threads only.
  2. Run a routine as a dry run before turning it on. A dry run reads real data and sends, posts and writes nothing.
  3. Turn off unused tools after adding an MCP server. Every supported tool arrives switched on, and a large server adds more than a hundred.
  4. Expect a billed seat for anyone who mentions Lindy in Slack. A teammate who joins that way has seven free days first.
  5. Connect only hosted MCP servers on public HTTPS with streamable HTTP, the one kind the docs describe.

OpenDuet

  1. Follow the README's Quick start (bun install, bash scripts/start.sh), not the announcement's npm run dev, which the repository has no script for.
  2. Run bun openbot/scripts/setup-learning.ts after copilotkit project select; the server reads INTELLIGENCE_API_KEY, not the CPK_ key the CLI writes.
  3. Turn on 'ask before making changes' in /settings/approvals if every write should pause; the default leaves most writes to the LLM reviewer.
  4. To bring your own agent, register it as a remote-ag-ui Bot in agents.yaml; its tool calls still pass through the gateway's policy and audit.
  5. Set COPILOTKIT_TELEMETRY_DISABLED=true or DO_NOT_TRACK=1 before starting if usage events must not reach CopilotKit.

Questions

Which is better for AI agents, Lindy or OpenDuet?

OpenDuet scores 49.5 (D) on agent readiness against Lindy's 32.5 (F), and leads in 6 of 7 scored categories. Lindy leads on payments & pricing.

Are Lindy and OpenDuet open source?

No open-source release is listed for Lindy. OpenDuet is open source (MIT. Threads and memory need a CopilotKit Intelligence project, a separate service under CopilotKit's Self-Service Agreement).

Other comparisons with Lindy or OpenDuet

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