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Head to head · Assistant proactive · October 2026 research run

GAIA vs Leon

GAIA scores 49.5 (D) on agent readiness against Leon's 41 (E), and leads in 4 of 7 scored categories. Leon leads on payments & pricing. Both do assistant proactive.

Best AI personal assistants that act for one person · All 190 assistants comparisons

GAIAThe Experience Company · Platform D49.5/100#813 of 986 LeonLouis Grenard (Leon AI) · Agent harness E41/100#934 of 986

Which one, for what

GAIA D

Best for It suits one person who wants mail triage, meeting briefs, todos and scheduled workflows from one assistant reachable on WhatsApp, Telegram, Slack, Discord or iMessage, and who wants to read the source.

Ahead on

  • Reliability, 67 against 32
  • Schema & documentation, 51 against 33
  • Security & auth, 54 against 34
  • Maintenance & community, 78 against 15

Watch for

The default approval mode in the source is always_allow, commented as nothing gated, while the privacy policy and the 26 August release notes say destructive actions wait for approval.

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

  • Payments & pricing, 60 against 20

Also in its favour

  • No key needed to call it
  • Free to start without a card
  • Open source
  • No incidents deducted, where GAIA loses 5 points for them

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

Score by category

CategoryWeight this runGAIALeonEdge
Reliability16%206732GAIA +35
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.25133GAIA +18
Agent ergonomics13%16.25457Leon +3
Security & auth14%17.55434GAIA +20
Payments & pricing10%12.52060Leon +40
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.87815GAIA +63
Transparency & trust7%8.86060even
Negative events≤15-50
TotalD 49.5/100E 41/100

Facts side by side

FactGAIALeon
KindPlatformAgent harness
VendorThe Experience CompanyLouis Grenard (Leon AI)
Hosted endpointno (local only)no (local only)
Transports
AuthOAuthNone
PricingPaidFree
x402nono
LicencePolyForm-Noncommercial-1.0.0MIT
Read-only variant documentednono
llms.txtyesno
Last release2026-09-142023-05-01
Terms last updated2026-08-14no document linked
Privacy policy last updated2026-08-07no document linked
Customer content may train modelsnot found in the text
Terms restrict automated accessyes
Terms restrict benchmarkingnot found in the text
Terms or service can change without noticeyes
Arbitration or class-action waiveryes
Popularity308 stars18k stars

Verdicts

GAIA

GAIA's source is public, so its approval gate, memory store and token handling can be read. Three approval modes and per-tool overrides exist, but the default mode in the source runs every action unasked, which the privacy policy and release notes do not say. Pro costs $30 a month and self-hosting is limited to noncommercial use.

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.

Before you call either

GAIA

  1. Set Settings > Approvals to Always ask or Auto before connecting mail. The default in the source runs every action, including send and delete, without asking.
  2. Expect no public API on the hosted service. The backend turns off its OpenAPI document in production, so reach GAIA through its apps, bots or CLI.
  3. Check the plan before relying on the hosted service. The README and docs describe a Free plan, and the pricing page says GAIA is a paid product.
  4. For self-hosting, prepare Docker, Node.js 20, a WorkOS account and a model key first, and confirm the use is noncommercial under the licence.
  5. Add outside tools as MCP servers by URL on the Integrations page. GAIA asks before adding a server in every approval mode.

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

Questions

Which is better for AI agents, GAIA or Leon?

GAIA scores 49.5 (D) on agent readiness against Leon's 41 (E), and leads in 4 of 7 scored categories. Leon leads on payments & pricing.

Are GAIA and Leon open source?

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

Other comparisons with GAIA or Leon

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