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

Atticus vs Instinct

Atticus scores 42.9 (E) on agent readiness against Instinct's 7.3 (F), and leads in every scored category. 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 InstinctSpear Street Technology, Inc. (d/b/a Instinct) · Platform F7.3/100#1093 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 10
  • Schema & documentation, 15 against 0
  • Agent ergonomics, 9 against 0
  • Security & auth, 49 against 3
  • Payments & pricing, 60 against 0
  • Maintenance & community, 51 against 2

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

Instinct F

Best for People who want to hand errands to an assistant by text or phone.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

No API, MCP server or A2A endpoint for an outside agent.

Score by category

CategoryWeight this runAtticusInstinctEdge
Reliability16%206810Atticus +58
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2150Atticus +15
Agent ergonomics13%16.290Atticus +9
Security & auth14%17.5493Atticus +46
Payments & pricing10%12.5600Atticus +60
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8512Atticus +49
Transparency & trust7%8.85653Atticus +3
Negative events≤1500
TotalE 42.9/100F 7.3/100

Facts side by side

FactAtticusInstinct
KindPlatformPlatform
VendorSaarthurR (Saarth Ranka)Spear Street Technology, Inc. (d/b/a Instinct)
Hosted endpointno (local only)no (local only)
Transports
AuthNoneOAuth or key
PricingYour planPaid
x402nono
LicenceMITClosed service under Instinct's Terms of Service (Spear Street Technology, Inc. d/b/a Instinct, last revised 26 August 2026).
Read-only variant documentednono
llms.txtnono
Last release2026-10-14none
Terms last updatedno document linked2026-08-26
Privacy policy last updatedno document linked2026-08-26
Customer content may train modelsyes, with an opt-out
Terms restrict automated accessyes
Terms restrict benchmarkingyes
Terms or service can change without noticenot found in the text
Arbitration or class-action waiveryes
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.

Instinct

Instinct is a hosted assistant reached by text or call that acts in the owner's Google Workspace and WhatsApp and can make purchases. No outside agent can call it, no price is published, new sign-ups may meet a capacity waitlist, and materials train models unless the owner opts out.

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

Instinct

  1. Don't look for an endpoint. app.instinct.com/mcp serves the web app shell and refuses POST with 405.
  2. Confirm any purchase with the owner. The terms say Actions may not be reversible.

Questions

Which is better for AI agents, Atticus or Instinct?

Atticus scores 42.9 (E) on agent readiness against Instinct's 7.3 (F), and leads in every scored category.

Are Atticus and Instinct open source?

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

Other comparisons with Atticus or Instinct

Disclosure

Instinct 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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