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
| Category | Weight this run | Leon | ZeroClaw | Edge |
|---|---|---|---|---|
| Reliability | 16%20 | 32 | 74 | ZeroClaw +42 |
| Performance | 10%pending | pending | pending | not scored in this run |
| Schema & documentation | 13%16.2 | 33 | 82 | ZeroClaw +49 |
| Agent ergonomics | 13%16.2 | 57 | 72 | ZeroClaw +15 |
| Security & auth | 14%17.5 | 34 | 76 | ZeroClaw +42 |
| Payments & pricing | 10%12.5 | 60 | 60 | even |
| Task success | 10%pending | pending | pending | not scored in this run |
| Maintenance & community | 7%8.8 | 15 | 80 | ZeroClaw +65 |
| Transparency & trust | 7%8.8 | 60 | 64 | ZeroClaw +4 |
| Negative events | ≤15 | 0 | -3 | |
| Total | E 41/100 | BB 70.2/100 |
Facts side by side
| Fact | Leon | ZeroClaw |
|---|---|---|
| Kind | Agent harness | Agent harness |
| Vendor | Louis Grenard (Leon AI) | ZeroClaw Labs |
| Hosted endpoint | no (local only) | no (local only) |
| Transports | ||
| Auth | None | None |
| Pricing | Free | Free |
| x402 | no | no |
| Licence | MIT | MIT OR Apache-2.0 |
| Read-only variant documented | no | yes |
| llms.txt | no | yes |
| Last release | 2023-05-01 | 2026-09-05 |
| Terms last updated | no document linked | no document linked |
| Privacy policy last updated | no document linked | no 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 | ||
| Popularity | 18k stars | 33k 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
- Clone the develop branch for 2.0.
npm install --global @leon-ai/cliand docs.getleon.ai install and describe the legacy 1.0 betas - Set
client_interface.auth.enabled: trueand aLEON_PROFILE_TOKENbefore the machine joins a shared network. The server binds 0.0.0.0 - Set
telemetry_enabled: falseandruntime.pulse_enabled: falsein the profileconfig.ymlfor an unattended or private run - Use
availability.tools.allowedto limit tools. Shell, file writes, computer use and browser control are otherwise available to the agent with no approval prompt - Back up
LEON_CONNECTIONS_ENCRYPTION_KEYfrom the profile.env. Without it the stored connections cannot be read
ZeroClaw
- Keep
[risk_profiles.<alias>] level = "supervised".fullruns every tool not listed inalways_ask, and the YOLO preset removes the sandbox and path rules too - Add sending and account tools such as
send_via,google_workspaceandhttp_requesttoalways_askso a session-level Always grant cannot skip the prompt - List senders in
[peer_groups.<name>] external_peers.["*"]accepts anyone on that channel - Set
[web_fetch].allowed_domainsand[http_request].allowed_domains. Fetches run unprompted and the OS sandbox does not block egress - 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
- AstrBot vs Leon
- AstrBot vs ZeroClaw
- CowAgent vs Leon
- CowAgent vs ZeroClaw
- GAIA vs Leon
- GAIA vs ZeroClaw
- Gemini Spark vs Leon
- Gemini Spark vs ZeroClaw
- Grok Bot vs Leon
- Grok Bot vs ZeroClaw
- Haven vs Leon
- Haven vs ZeroClaw
- Hermes Agent vs Leon
- Hermes Agent vs ZeroClaw
- Instinct vs Leon
- Instinct vs ZeroClaw
- IronClaw vs Leon
- IronClaw vs ZeroClaw
- Leon vs Lindy
- Leon vs nanobot
- Leon vs NanoClaw
- Leon vs Dots
- Leon vs OpenClaw
- Leon vs PicoClaw
- Leon vs Poke
- Leon vs QwenPaw
- Leon vs Zo Computer
- Lindy vs ZeroClaw
- nanobot vs ZeroClaw
- NanoClaw vs ZeroClaw
- Dots vs ZeroClaw
- OpenClaw vs ZeroClaw
- PicoClaw vs ZeroClaw
- Poke vs ZeroClaw
- QwenPaw vs ZeroClaw
- ZeroClaw vs Zo Computer
Machine-readable
- This page as Markdown
/compare/leon-vs-zeroclaw.md· slim.min.md· JSON.json(or sendAccept: text/markdown) - Each listing in full
/api/v1/tools/leon.json·/api/v1/tools/zeroclaw.json - From a terminal
anchor compare leon zeroclaw(the CLI) - Over MCP
compare_tools {"a": "leon", "b": "zeroclaw"}at/mcp, no key