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Head to head · Assistants reached by message · October 2026 research run

Tab vs Zo Computer

Zo Computer scores 43.1 (E) on agent readiness against Tab's 10.7 (F), and leads in every scored category. Both do assistants reached by message.

Best AI personal assistants that act for one person · All 834 assistants comparisons

TabTerrasoft, Inc. · Platform F10.7/100#1003 of 1010 Zo ComputerZo Computer Company · HTTP API E43.1/100#915 of 1010

Which one, for what

Tab F

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

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

Watch for

Private beta behind a waitlist.

Zo Computer E

Best for One person who wants a hosted assistant with its own Linux machine, reachable by text message and chat apps, and who accepts that the assistant acts on connected accounts without a documented approval step.

Ahead on

  • Reliability, 15 against 5
  • Schema & documentation, 73 against 0
  • Agent ergonomics, 34 against 0
  • Security & auth, 37 against 4
  • Payments & pricing, 40 against 0
  • Maintenance & community, 68 against 58
  • Transparency & trust, 60 against 45

Also in its favour

  • A hosted endpoint, with nothing to install

Watch for

The access token for the API and MCP endpoint grants full access to the workspace, with no scoped or read-only token documented

Score by category

CategoryWeight this runTabZo ComputerEdge
Reliability16%20515Zo Computer +10
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2073Zo Computer +73
Agent ergonomics13%16.2034Zo Computer +34
Security & auth14%17.5437Zo Computer +33
Payments & pricing10%12.5040Zo Computer +40
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.85868Zo Computer +10
Transparency & trust7%8.84560Zo Computer +15
Negative events≤1500
TotalF 10.7/100E 43.1/100

Facts side by side

FactTabZo Computer
KindPlatformHTTP API
VendorTerrasoft, Inc.Zo Computer Company
Hosted endpointno (local only)https://api.zo.computer/mcp
TransportsHTTP
AuthOAuth or keyAPI key
PricingPaidFreemium
x402nono
LicenceClosed service under Tab's Terms of Use (Terrasoft, Inc., effective 2 September 2026).Proprietary service under Zo Computer Company's terms of service
Read-only variant documentednono
llms.txtnoyes
Last releasenone2026-09-14
Terms last updated2025-08-08
Privacy policy last updated2026-05-20
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 noticenot found in the text
Arbitration or class-action waivernot found in the text

Verdicts

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.

Zo Computer

Zo publishes an OpenAPI file, Markdown docs, plan prices and a named list of the providers that receive user content. One access token grants full access to the workspace, no approval step before sending or buying was found in the reviewed docs, and no status page, rate limit or SLA is published.

Before you call either

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.

Zo Computer

  1. Send POST https://api.zo.computer/zo/ask with Authorization: Bearer zo_sk_... and an input string. The owner creates the token under Settings > Advanced
  2. Pass persona_id for a persona with a narrow tool set. The token itself carries every permission the owner has
  3. Set memory_mode to off to keep workspace memory out of a request. The field is in the OpenAPI file and absent from the API guide
  4. Do not retry /zo/ask blindly after a timeout. No idempotency key is documented and the request may already have sent a message
  5. Append .md to any guide or reference URL for Markdown

Questions

Which is better for AI agents, Tab or Zo Computer?

Zo Computer scores 43.1 (E) on agent readiness against Tab's 10.7 (F), and leads in every scored category.

Can an agent call Tab and Zo Computer without installing anything?

No hosted endpoint is listed for Tab. Zo Computer has a hosted endpoint at https://api.zo.computer/mcp.

Other comparisons with Tab or Zo Computer

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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