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Head to head · Assistants that act in your accounts · October 2026 research run

Gemini Spark vs szn

Gemini Spark scores 24.5 (F) on agent readiness against szn's 7.3 (F), and leads in 6 of 7 scored categories. szn leads on payments & pricing. Both do assistants that act in your accounts.

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

Gemini SparkGoogle LLC · Platform F24.5/100#982 of 1010 sznNomadic Futures · Platform F7.3/100#1010 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 10
  • Agent ergonomics, 9 against 0
  • Security & auth, 60 against 0
  • Maintenance & community, 17 against 2
  • Transparency & trust, 49 against 23

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

szn F

Best for A person who wants calls, emails and bookings done for them and has an access code.

Ahead on

  • Payments & pricing, 20 against 10

Watch for

Early access by access code only.

Score by category

CategoryWeight this runGemini SparksznEdge
Reliability16%20145Gemini Spark +9
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.21710Gemini Spark +7
Agent ergonomics13%16.290Gemini Spark +9
Security & auth14%17.5600Gemini Spark +60
Payments & pricing10%12.51020szn +10
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8172Gemini Spark +15
Transparency & trust7%8.84923Gemini Spark +26
Negative events≤1500
TotalF 24.5/100F 7.3/100

Facts side by side

FactGemini Sparkszn
KindPlatformPlatform
VendorGoogle LLCNomadic Futures
Hosted endpointno (local only)no (local only)
Transports
AuthOAuthOAuth or key
PricingPaidFree
x402nono
LicenceProprietary hosted service under the Google Terms of ServiceClosed service. No terms of service were found on theszn.ai. A privacy policy and an acceptable use policy (both last updated March 2026) apply.
Read-only variant documentednoyes
llms.txtnoyes
Last release2026-05-19none
Terms last updated2026-07-30no document linked
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.

szn

szn is an errand assistant in early access that makes calls, sends emails and books for its owner, free during the preview for people with an access code. No outside agent can call it, no terms of service or legal entity appear in its policies, and its privacy policy says nothing on training.

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

szn

  1. Don't plan to call szn from another agent. It answers only its web app, iMessage, SMS and email for the owner.
  2. Tell the owner they need an access code to start, and that the acceptable use policy makes them responsible for confirming actions.

Questions

Which is better for AI agents, Gemini Spark or szn?

Gemini Spark scores 24.5 (F) on agent readiness against szn's 7.3 (F), and leads in 6 of 7 scored categories. szn leads on payments & pricing.

Other comparisons with Gemini Spark or szn

Disclosure

szn 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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