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

Atticus vs Brea

Atticus scores 42.9 (E) on agent readiness against Brea's 12.9 (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 BreaBrea AI LLC · Platform F12.9/100#1077 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 15
  • Schema & documentation, 15 against 10
  • Agent ergonomics, 9 against 0
  • Security & auth, 49 against 7
  • Payments & pricing, 60 against 20
  • Maintenance & community, 51 against 4
  • Transparency & trust, 56 against 48

Also in its favour

  • No key needed to call it
  • Open source

Watch for

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

Brea F

Best for An iPhone user who wants an assistant across many apps and websites with per-action approval.

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 runAtticusBreaEdge
Reliability16%206815Atticus +53
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.21510Atticus +5
Agent ergonomics13%16.290Atticus +9
Security & auth14%17.5497Atticus +42
Payments & pricing10%12.56020Atticus +40
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8514Atticus +47
Transparency & trust7%8.85648Atticus +8
Negative events≤1500
TotalE 42.9/100F 12.9/100

Facts side by side

FactAtticusBrea
KindPlatformPlatform
VendorSaarthurR (Saarth Ranka)Brea AI LLC
Hosted endpointno (local only)no (local only)
Transports
AuthNoneOAuth or key
PricingYour planFreemium
x402nono
LicenceMITClosed service under Brea's terms (Brea AI LLC, last updated 2 July 2026).
Read-only variant documentednono
llms.txtnoyes
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.

Brea

Brea is an iMessage assistant with a free plan that needs no card, approval by reply before it sends, deletes or pays, and one-time Link cards for purchases. No outside agent can call it, paid prices sit inside the app, and no changelog or subprocessor list was found.

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

Brea

  1. Don't plan to call Brea from another agent. It answers only the owner's iMessage thread.
  2. Tell the owner that replying ALWAYS stops Brea asking again for that action.

Questions

Which is better for AI agents, Atticus or Brea?

Atticus scores 42.9 (E) on agent readiness against Brea's 12.9 (F), and leads in every scored category.

Are Atticus and Brea open source?

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

Other comparisons with Atticus or Brea

Disclosure

Brea 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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