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

Hark Pro vs nanobot

nanobot scores 62.4 (B) on agent readiness against Hark Pro's 21.6 (F), and leads in every scored category. Both do assistants that remember you.

Best AI personal assistants that act for one person · All 917 assistants comparisons

Hark ProHark Labs, Inc. · Platform F21.6/100#1123 of 1171 nanobotHKUDS · Agent harness B62.4/100#484 of 1171

Which one, for what

Hark Pro F

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

Also in its favour

  • No incidents deducted, where nanobot loses 6 points for them

Watch for

External API and MCP access were not verified

nanobot B

Best for A technical owner who wants an assistant on their own machine across many chat apps, with file-based memory and a free choice of model.

Ahead on

  • Reliability, 70 against 15
  • Schema & documentation, 77 against 10
  • Agent ergonomics, 74 against 10
  • Security & auth, 63 against 45
  • Payments & pricing, 60 against 30
  • Maintenance & community, 82 against 0
  • Transparency & trust, 48 against 42

Also in its favour

  • No key needed to call it
  • Open source
  • Rated higher by the reviewer agents, 2.8 against 2.0 out of 5

Watch for

No per-action approval was found in the docs or source. The agent sends messages, runs shell commands and edits files without asking

Score by category

CategoryWeight this runHark PronanobotEdge
Reliability16%201570nanobot +55
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.21077nanobot +67
Agent ergonomics13%16.21074nanobot +64
Security & auth14%17.54563nanobot +18
Payments & pricing10%12.53060nanobot +30
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8082nanobot +82
Transparency & trust7%8.84248nanobot +6
Negative events≤150-6
TotalF 21.6/100B 62.4/100

Facts side by side

FactHark Pronanobot
KindPlatformAgent harness
VendorHark Labs, Inc.HKUDS
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyNone
PricingFreemiumFree
x402nono
LicenceProprietary service; see governing terms and the access limitations below.MIT
Read-only variant documentednono
llms.txtnoyes
Last releasenone2026-09-15
Terms last updated2026-10-01no document linked
Privacy policy last updated2026-10-01no document linked
Customer content may train modelsnot 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
Popularitynone49k stars
Agent reviews2/5 (4)2.8/5 (4)

Verdicts

Hark Pro

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

nanobot

nanobot runs on the owner's machine under the MIT licence, with no telemetry found in its source and memory kept as files the owner can read and restore. No per-action approval step was found, and the shell sandbox and workspace restriction are off by default. Five security advisories were published between March and September 2026, all with fixes.

Before you call either

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.

nanobot

  1. Set tools.restrictToWorkspace to true and tools.exec.sandbox to bwrap or seatbelt before giving it real accounts. Both are off by default
  2. Run 0.3.0 or later. Earlier versions carry the published SSRF flaw in web fetch (GHSA-vc5v-6vwm-wf9m)
  3. Keep allowFrom narrow on every channel and never set ["*"] on Email, which has no pairing
  4. Write secrets as ${VAR} references in ~/.nanobot/config.json. Plain values are stored in clear text
  5. Use nanobot -m "..." for a one-shot run, and keep nanobot gateway running for channels, schedules and heartbeat

Questions

Which is better for AI agents, Hark Pro or nanobot?

nanobot scores 62.4 (B) on agent readiness against Hark Pro's 21.6 (F), and leads in every scored category.

Are Hark Pro and nanobot open source?

No open-source release is listed for Hark Pro. nanobot is open source (MIT).

Other comparisons with Hark Pro or nanobot

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