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

Leon vs Tomo

Leon scores 41 (E) on agent readiness against Tomo's 13.1 (F), and leads in 6 of 7 scored categories. Tomo leads on maintenance & community. Both do assistants that act in your accounts.

Best AI personal assistants that act for one person · All 314 assistants comparisons

LeonLouis Grenard (Leon AI) · Agent harness E41/100#936 of 993 TomoMapo Labs, Inc. · Platform F13.1/100#989 of 993

Which one, for what

Leon E

Best for A developer who wants a self-hosted assistant with memory, computer use and a local model, and who will read the source.

Ahead on

  • Reliability, 32 against 15
  • Schema & documentation, 33 against 0
  • Agent ergonomics, 57 against 0
  • Security & auth, 34 against 0
  • Payments & pricing, 60 against 10
  • Transparency & trust, 60 against 47

Also in its favour

  • No key needed to call it
  • Free to start without a card
  • Open source

Watch for

No tagged release of the core since 1.0.0-beta.8 on 1 May 2023. The 2.0 Developer Preview is installed by cloning the develop branch

Tomo F

Best for People who want accountability, check-ins and reminders by text, including in group chats.

Ahead on

  • Maintenance & community, 54 against 15

Watch for

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

Score by category

CategoryWeight this runLeonTomoEdge
Reliability16%203215Leon +17
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2330Leon +33
Agent ergonomics13%16.2570Leon +57
Security & auth14%17.5340Leon +34
Payments & pricing10%12.56010Leon +50
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.81554Tomo +39
Transparency & trust7%8.86047Leon +13
Negative events≤1500
TotalE 41/100F 13.1/100

Facts side by side

FactLeonTomo
KindAgent harnessPlatform
VendorLouis Grenard (Leon AI)Mapo Labs, Inc.
Hosted endpointno (local only)no (local only)
Transports
AuthNoneOAuth or key
PricingFreePaid
x402nono
LicenceMITClosed service under Tomo's Terms of Service (Mapo Labs, Inc., last updated 24 September 2026).
Read-only variant documentednono
llms.txtnono
Last release2023-05-012026-09-29
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
Popularity18k starsnone

Verdicts

Leon

Connected-app credentials are encrypted per profile and the Gmail connection is read-only. The 2.0 Developer Preview has no tagged release, runs tools and a 30-minute proactive pulse with no approval step, listens on every network interface with client authentication off, and sends telemetry by default.

Tomo

Tomo is a hosted personal AI over iMessage and an iOS app, centred on goals, check-ins and reminders, with regular iOS releases since April 2026. No outside agent can call it, there's no free plan, and no status page, security contact or subprocessor list was found.

Before you call either

Leon

  1. Clone the develop branch for 2.0. npm install --global @leon-ai/cli and docs.getleon.ai install and describe the legacy 1.0 betas
  2. Set client_interface.auth.enabled: true and a LEON_PROFILE_TOKEN before the machine joins a shared network. The server binds 0.0.0.0
  3. Set telemetry_enabled: false and runtime.pulse_enabled: false in the profile config.yml for an unattended or private run
  4. Use availability.tools.allowed to limit tools. Shell, file writes, computer use and browser control are otherwise available to the agent with no approval prompt
  5. Back up LEON_CONNECTIONS_ENCRYPTION_KEY from the profile .env. Without it the stored connections cannot be read

Tomo

  1. Don't plan to call Tomo from another agent. It answers only the owner's iMessage, group chats it's added to and the iOS app.
  2. Tell the owner that adding Tomo to a group chat applies its terms to every participant.

Questions

Which is better for AI agents, Leon or Tomo?

Leon scores 41 (E) on agent readiness against Tomo's 13.1 (F), and leads in 6 of 7 scored categories. Tomo leads on maintenance & community.

Are Leon and Tomo open source?

Leon is open source (MIT). No open-source release is listed for Tomo.

Other comparisons with Leon or Tomo

Disclosure

Tomo 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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