Get an audit

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

Gemini Spark vs Tab

Gemini Spark scores 24.5 (F) 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 834 assistants comparisons

Gemini SparkGoogle LLC · Platform F24.5/100#982 of 1010 TabTerrasoft, Inc. · Platform F10.7/100#1003 of 1010

Which one, for what

Gemini Spark F

Best for A person who already keeps mail, calendar and files in a personal Google Account and accepts Keep Activity being on.

Ahead on

  • Reliability, 14 against 5
  • Schema & documentation, 17 against 0
  • Agent ergonomics, 9 against 0
  • Security & auth, 60 against 4
  • Payments & pricing, 10 against 0

Watch for

No public API, SDK or MCP server for an outside agent was found. Spark is reached in the Gemini mobile app, the Mac app and gemini.google.com

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 17

Watch for

Private beta behind a waitlist.

Score by category

CategoryWeight this runGemini SparkTabEdge
Reliability16%20145Gemini Spark +9
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2170Gemini Spark +17
Agent ergonomics13%16.290Gemini Spark +9
Security & auth14%17.5604Gemini Spark +56
Payments & pricing10%12.5100Gemini Spark +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.81758Tab +41
Transparency & trust7%8.84945Gemini Spark +4
Negative events≤1500
TotalF 24.5/100F 10.7/100

Facts side by side

FactGemini SparkTab
KindPlatformPlatform
VendorGoogle LLCTerrasoft, Inc.
Hosted endpointno (local only)no (local only)
Transports
AuthOAuthOAuth or key
PricingPaidPaid
x402nono
LicenceProprietary hosted service under the Google Terms of ServiceClosed service under Tab's Terms of Use (Terrasoft, Inc., effective 2 September 2026).
Read-only variant documentednono
llms.txtnono
Last release2026-05-19none
Terms last updated2026-07-30
Privacy policy last updated2026-09-24
Customer content may train modelsyes, with an opt-out
Terms restrict automated accessyes
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

Gemini Spark

Google's help pages state what Spark confirms before doing, how to delete its remote browser and code data, and the risks of prompt injection. Spark has no public API, Google calls it experimental, and it runs only with Keep Activity on, the setting under which chats are used for model training and human review.

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

Gemini Spark

  1. Do not plan an integration against Spark. No public API or MCP server was found, and a person must hold a Google AI Pro or Ultra subscription
  2. Expect a confirmation request before sends, edits, purchases and web form submissions, and note that bulk changes to private Google Tasks run without one
  3. Delete remote browser data and remote code execution data in Gemini Spark Settings after a sensitive session. Deleting a task thread or Gemini Apps activity does not remove them
  4. Keep within 15 running tasks and 50 active schedules. A schedule does not run when 15 tasks are running or the usage limit is reached
  5. Treat every safety statement here as Google's own description. None was tested, and no message was sent to the service

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, Gemini Spark or Tab?

Gemini Spark scores 24.5 (F) on agent readiness against Tab's 10.7 (F), and leads in 6 of 7 scored categories. Tab leads on maintenance & community.

Other comparisons with Gemini Spark 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.

Machine-readable

For companies

Do agents find, use and choose your tools?

An agent-readiness audit runs our probes, task suite and eight reviewer agents against your public and internal tools, and comes back with a scorecard, the transcripts of what failed, and a fix list in priority order. From $2,500, re-run included. We never take payment to move a rank. We do help companies earn one.

Get an auditSee a sample report