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

Del vs Gemini Spark

Gemini Spark scores 24.5 (F) on agent readiness against Del's 20.6 (F), and leads in 3 of 7 scored categories. Del leads on reliability, payments & pricing, maintenance & community and transparency & trust. Both do assistants that act in your accounts.

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

DelHuman Interface, Inc. · Platform F20.6/100#991 of 1010 Gemini SparkGoogle LLC · Platform F24.5/100#982 of 1010

Which one, for what

Del F

Best for People who want tasks, notes, reminders and Gmail handled by text on the channel they already use.

Ahead on

  • Reliability, 25 against 14
  • Payments & pricing, 30 against 10
  • Maintenance & community, 60 against 17
  • Transparency & trust, 57 against 49

Also in its favour

  • Free to start without a card

Watch for

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

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

  • Schema & documentation, 17 against 10
  • Agent ergonomics, 9 against 0
  • Security & auth, 60 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

Score by category

CategoryWeight this runDelGemini SparkEdge
Reliability16%202514Del +11
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.21017Gemini Spark +7
Agent ergonomics13%16.209Gemini Spark +9
Security & auth14%17.5060Gemini Spark +60
Payments & pricing10%12.53010Del +20
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.86017Del +43
Transparency & trust7%8.85749Del +8
Negative events≤1500
TotalF 20.6/100F 24.5/100

Facts side by side

FactDelGemini Spark
KindPlatformPlatform
VendorHuman Interface, Inc.Google LLC
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyOAuth
PricingPaidPaid
x402nono
LicenceClosed service under Del's Terms of Service (Human Interface, Inc., a Delaware corporation, last updated 5 August 2026).Proprietary hosted service under the Google Terms of Service
Read-only variant documentednono
llms.txtyesno
Last release2026-10-072026-05-19
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

Del

Del is a hosted texting assistant and task workspace across iMessage, WhatsApp, Telegram, SMS, Discord and Slack, with a near-daily public changelog and a card-free 14-day trial. No outside agent can call it, no status page or security contact was found, and recent updates let some email actions skip approval.

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.

Before you call either

Del

  1. Don't plan to call Del from another agent. It answers only the owner's messaging threads and web workspace.
  2. Tell the owner web browsing tasks are limited to five a month on Standard and unlimited on Pro.

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

Questions

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

Gemini Spark scores 24.5 (F) on agent readiness against Del's 20.6 (F), and leads in 3 of 7 scored categories. Del leads on reliability, payments & pricing, maintenance & community and transparency & trust.

Other comparisons with Del or Gemini Spark

Disclosure

Del 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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