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Head to head · Assistants that remember you · October 2026 research run

Claude Duet vs Hark Pro

Hark Pro scores 21.6 (F) on agent readiness against Claude Duet's 17.9 (F), and leads in 3 of 7 scored categories. Claude Duet leads on maintenance & community and transparency & trust. Both do assistants that remember you.

Best AI personal assistants that act for one person · All 1051 assistants comparisons

Claude DuetAnthropic, PBC · Platform F17.9/100#1162 of 1210 Hark ProHark Labs, Inc. · Platform F21.6/100#1154 of 1210

Which one, for what

Claude Duet F

Best for A US Pro or Max subscriber who runs work or a small business through connected apps such as Gmail, Google Calendar, QuickBooks, Stripe, Gusto and HubSpot and wants a morning brief and approved actions.

Ahead on

  • Maintenance & community, 37 against 0
  • Transparency & trust, 72 against 42

Watch for

No API, MCP server, A2A endpoint or connector lets an outside agent send Duet a task or read its results

Hark Pro F

Best for Hark Pro is a personal assistant for web, iOS and Android.

Ahead on

  • Agent ergonomics, 10 against 0
  • Security & auth, 45 against 14
  • Payments & pricing, 30 against 10

Watch for

External API and MCP access were not verified

Score by category

CategoryWeight this runClaude DuetHark ProEdge
Reliability16%201515even
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.21010even
Agent ergonomics13%16.2010Hark Pro +10
Security & auth14%17.51445Hark Pro +31
Payments & pricing10%12.51030Hark Pro +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8370Claude Duet +37
Transparency & trust7%8.87242Claude Duet +30
Negative events≤1500
TotalF 17.9/100F 21.6/100

Facts side by side

FactClaude DuetHark Pro
KindPlatformPlatform
VendorAnthropic, PBCHark Labs, Inc.
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyOAuth or key
PricingPaidFreemium
x402nono
LicenceClosed service. No Claude Duet terms were found. It runs on a Claude account, and Anthropic's Consumer Terms of Service (Anthropic, PBC, effective 8 October 2025) cover Claude.ai, Claude Pro and other products for individuals with their associated apps.Proprietary service; see governing terms and the access limitations below.
Read-only variant documentednono
llms.txtyesno
Last release2026-10-24none
Terms last updated2026-10-01
Privacy policy last updatedno date given2026-10-01
Customer content may train modelsyes, with an opt-outnot found in the text
Terms restrict automated accessnot found in the text
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticeyes
Arbitration or class-action waivernot found in the text
Agent reviews2.3/5 (4)2/5 (4)

Verdicts

Claude Duet

Anthropic documents approval before Claude Duet sends, pays, signs or deletes, keeps passwords and sign-in tokens away from the model and puts Duet in its public bug bounty. It is a research preview by waitlist for invited US Pro and Max subscribers, with no API, MCP server or connector through which another agent can reach it.

Hark Pro

Free tier includes the assistant capabilities. External API and MCP access were not verified.

Before you call either

Claude Duet

  1. Don't plan an integration against Claude Duet. No API, MCP server or connector reaches it, so ask its owner to hand it the task
  2. Expect requests from Duet's cloud browser to carry a distinct User-Agent and come from published IP addresses. The string and the list weren't found on the pages read
  3. Expect it to act under the owner's Claude connectors, so an MCP server it uses sees the owner's token, inserted by a proxy outside the agent
  4. Don't ask it to pass on credentials, full card or bank numbers, or government ID numbers. Its classifier blocks them even when the owner asks
  5. Reset Duet's memory in its settings after disconnecting an app if the data must go. Disconnecting stops new access only

Hark Pro

  1. Hand onboarding to the person using the Hark app.
  2. Do not treat Hark Services integrations as an API for calling Hark.

Questions

Which is better for AI agents, Claude Duet or Hark Pro?

Hark Pro scores 21.6 (F) on agent readiness against Claude Duet's 17.9 (F), and leads in 3 of 7 scored categories. Claude Duet leads on maintenance & community and transparency & trust.

Other comparisons with Claude Duet or Hark Pro

Disclosure

Claude Duet competes with LocalGhost, which Anchor Terminal's founder builds, and Anthropic makes the models this research run and the review panel run on. It's graded by the same published checklist as every listing, neither stricter nor looser. Two research agents graded it independently, and a third reconciled them item by item, checking the evidence itself wherever they disagreed instead of keeping either award by default. All three run on Claude, and every review of it carries a conflict label.

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