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

Atticus vs Tab

Atticus scores 42.9 (E) on agent readiness against Tab's 10.7 (F), and leads in 6 of 7 scored categories. Tab leads on maintenance & community. Both do assistants that remember you.

Best AI personal assistants that act for one person · All 875 assistants comparisons

AtticusSaarthurR (Saarth Ranka) · Platform E42.9/100#974 of 1094 TabTerrasoft, Inc. · Platform F10.7/100#1083 of 1094

Which one, for what

Atticus E

Best for A person on macOS 26 with a Claude Pro or Max plan who wants voice control of apps, windows, files and the browser.

Ahead on

  • Reliability, 68 against 5
  • Schema & documentation, 15 against 0
  • Agent ergonomics, 9 against 0
  • Security & auth, 49 against 4
  • Payments & pricing, 60 against 0
  • Transparency & trust, 56 against 45

Also in its favour

  • No key needed to call it
  • Free to start without a card
  • Open source

Watch for

No API, MCP server or documented command an outside agent can call

Tab F

Best for A person who wants a texting assistant that browses, calls and buys with tight checkout controls.

Ahead on

  • Maintenance & community, 58 against 51

Watch for

Private beta behind a waitlist.

Score by category

CategoryWeight this runAtticusTabEdge
Reliability16%20685Atticus +63
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2150Atticus +15
Agent ergonomics13%16.290Atticus +9
Security & auth14%17.5494Atticus +45
Payments & pricing10%12.5600Atticus +60
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.85158Tab +7
Transparency & trust7%8.85645Atticus +11
Negative events≤1500
TotalE 42.9/100F 10.7/100

Facts side by side

FactAtticusTab
KindPlatformPlatform
VendorSaarthurR (Saarth Ranka)Terrasoft, Inc.
Hosted endpointno (local only)no (local only)
Transports
AuthNoneOAuth or key
PricingYour planPaid
x402nono
LicenceMITClosed service under Tab's Terms of Use (Terrasoft, Inc., effective 2 September 2026).
Read-only variant documentednono
llms.txtnono
Last release2026-10-14none
Terms last updatedno document linked
Privacy policy last updatedno document linked
Customer content may train models
Terms restrict automated access
Terms restrict benchmarking
Terms or service can change without notice
Arbitration or class-action waiver
Popularity163 starsnone

Verdicts

Atticus

Atticus runs a person's Mac by voice on their existing Claude or Devin plan, with a sandboxed safe mode and a local log of every command. It has no API, MCP server or documented command for another agent, it is five days old, and it rebuilds itself from the main branch every six hours by default.

Tab

Tab is a private-beta texting assistant with a detailed security page on credential isolation and checkout binding, and a public updates page. No outside agent can call it, no price is published, and its privacy policy says nothing on training with user content.

Before you call either

Atticus

  1. Don't plan to call Atticus from another agent. It takes requests only from its own shortcut and typing box
  2. If a user runs Atticus beside you, expect it to move windows and type into apps on the same Mac
  3. Point a user who wants pinned versions to Settings > About & Updates to turn off self-update

Tab

  1. Don't plan to call Tab from another agent. It answers only the owner's Messages or WhatsApp thread.
  2. Tell the owner that access needs a waitlist place and no price is published.

Questions

Which is better for AI agents, Atticus or Tab?

Atticus scores 42.9 (E) on agent readiness against Tab's 10.7 (F), and leads in 6 of 7 scored categories. Tab leads on maintenance & community.

Are Atticus and Tab open source?

Atticus is open source (MIT). No open-source release is listed for Tab.

Other comparisons with Atticus or Tab

Disclosure

Tab competes with LocalGhost, which Anchor Terminal's founder builds. 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.

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