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Head to head · Assistant proactive · October 2026 research run

Instinct vs Leon

Leon scores 41 (E) on agent readiness against Instinct's 11.4 (F), and leads in every scored category. Both do assistant proactive.

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

InstinctSpear Street Technology, Inc. · Platform F11.4/100#984 of 986 LeonLouis Grenard (Leon AI) · Agent harness E41/100#934 of 986

Which one, for what

Instinct F

Best for A consumer assistant for one adult who wants errands done by text or phone call, such as bill disputes, gifts, groceries, appointments and travel, and who accepts that it acts and spends as their agent.

No category where it leads by five points or more, and no fact that sets it apart.

Watch for

No price is published. The terms say fees may apply to certain functions, are charged in US dollars and are non-refundable

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 5
  • Schema & documentation, 33 against 3
  • Agent ergonomics, 57 against 5
  • Security & auth, 34 against 25
  • Payments & pricing, 60 against 0
  • Maintenance & community, 15 against 3
  • Transparency & trust, 60 against 51

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

Score by category

CategoryWeight this runInstinctLeonEdge
Reliability16%20532Leon +27
Performance10%pendingpendingpendingnot scored in this run
Schema & documentation13%16.2333Leon +30
Agent ergonomics13%16.2557Leon +52
Security & auth14%17.52534Leon +9
Payments & pricing10%12.5060Leon +60
Task success10%pendingpendingpendingnot scored in this run
Maintenance & community7%8.8315Leon +12
Transparency & trust7%8.85160Leon +9
Negative events≤1500
TotalF 11.4/100E 41/100

Facts side by side

FactInstinctLeon
KindPlatformAgent harness
VendorSpear Street Technology, Inc.Louis Grenard (Leon AI)
Hosted endpointno (local only)no (local only)
Transports
AuthOAuth or keyNone
PricingPaidFree
x402nono
LicenceProprietary service under Instinct's Terms of Service, which grant personal use onlyMIT
Read-only variant documentednono
llms.txtnono
Last releasenone2023-05-01
Terms last updated2026-08-26no document linked
Privacy policy last updated2026-08-26no document linked
Customer content may train modelsyes, with an opt-out
Terms restrict automated accessyes
Terms restrict benchmarkingyes
Terms or service can change without noticenot found in the text
Arbitration or class-action waiveryes
Popularitynone18k stars

Verdicts

Instinct

The terms and privacy policy are specific about connected accounts, model training and the risks of autonomous actions, and security.txt is valid. No price, documentation, status page, changelog or programmatic interface is published, and customer content trains AI models unless the owner opts out.

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

Instinct

  1. Do not plan on calling Instinct from a program. No API, MCP server or key was found, and the terms forbid automation software and benchmarking
  2. A person signs in at app.instinct.com with a phone number and a one-time code by text, and may wait for a place when the service is at capacity
  3. Tell the owner to opt out of model training at app.instinct.com/settings before connecting mail or files, since training is on by default
  4. Disconnecting an account does not delete what was indexed from it. Delete that data at app.instinct.com/workspace
  5. Treat purchases and bookings as final. The terms say actions may not be reversible and that confirmation controls are not guaranteed

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, Instinct or Leon?

Leon scores 41 (E) on agent readiness against Instinct's 11.4 (F), and leads in every scored category.

Are Instinct and Leon open source?

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

Other comparisons with Instinct or Leon

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