Head to head · Assistant proactive · October 2026 research run

Leon vs ZeroClaw

ZeroClaw scores 70.2 (BB) on agent readiness against Leon's 41 (E), and leads in 6 of 7 scored categories. Both do assistant proactive.

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

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.

Also in its favour

  • No incidents deducted, where ZeroClaw loses 3 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

ZeroClaw BB

Best for One person who wants an assistant on their own hardware that answers on Telegram, Discord, Matrix or email, asks before it writes or runs commands, and works with a local model.

Ahead on

  • Reliability, 74 against 32
  • Schema & documentation, 82 against 33
  • Agent ergonomics, 72 against 57
  • Security & auth, 76 against 34
  • Maintenance & community, 80 against 15

Also in its favour

  • Agent-ready, a grade of BB or better

Watch for

The docs state that command execution is not audited. [security.audit] records certificate events only, and tool receipts are opt-in and not durable

Score by category

CategoryWeight this runLeonZeroClawEdge
Reliability16%203274ZeroClaw +42
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.23382ZeroClaw +49
Agent ergonomics13%16.25772ZeroClaw +15
Security & auth14%17.53476ZeroClaw +42
Payments & pricing10%12.56060even
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.81580ZeroClaw +65
Transparency & trust7%8.86064ZeroClaw +4
Negative events≤150-3
TotalE 41/100BB 70.2/100

Facts side by side

FactLeonZeroClaw
KindAgent harnessAgent harness
VendorLouis Grenard (Leon AI)ZeroClaw Labs
Hosted endpointno (local only)no (local only)
Transports
AuthNoneNone
PricingFreeFree
x402nono
LicenceMITMIT OR Apache-2.0
Read-only variant documentednoyes
llms.txtnoyes
Last release2023-05-012026-09-05
Terms last updatedno document linkedno document linked
Privacy policy last updatedno document linkedno 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 stars33k stars

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.

ZeroClaw

Supervised autonomy is the default, so tools outside a short read-only list wait for the owner's approval, and secrets are encrypted in the config file. The docs state that command execution is not written to an audit log, and the project publishes no privacy policy or terms.

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

ZeroClaw

  1. Keep [risk_profiles.<alias>] level = "supervised". full runs every tool not listed in always_ask, and the YOLO preset removes the sandbox and path rules too
  2. Add sending and account tools such as send_via, google_workspace and http_request to always_ask so a session-level Always grant cannot skip the prompt
  3. List senders in [peer_groups.<name>] external_peers. ["*"] accepts anyone on that channel
  4. Set [web_fetch].allowed_domains and [http_request].allowed_domains. Fetches run unprompted and the OS sandbox does not block egress
  5. Run one-shot tasks with zeroclaw agent -a <alias> -m "<task>". A cron or webhook turn has no prompt, so shell calls fall to the command policy

Questions

Which is better for AI agents, Leon or ZeroClaw?

ZeroClaw scores 70.2 (BB) on agent readiness against Leon's 41 (E), and leads in 6 of 7 scored categories.

Are Leon and ZeroClaw open source?

Yes. Leon is open source (MIT). ZeroClaw is open source (MIT OR Apache-2.0).

Other comparisons with Leon or ZeroClaw

Machine-readable

For companies

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