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Cactus
Cactus

Cactus

Open-source on-device AI inference engine for phones and wearables with cloud fallback.

Operating headquarters
San Francisco, CA, US🇺🇸
Founded
2025
Accelerator
Y Combinator logoY CombinatorS25
Overview
Analysis
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Employees
News
Library

Cactus builds an open-source inference engine that runs speech, vision, and text AI models directly on mobile devices, laptops, and wearables, with a hybrid router that hands complex requests off to the cloud. It supports models from common repositories with hardware-specific acceleration, quantization, and low-memory model loading across iOS, Android, macOS, and wearable platforms.

The hybrid approach keeps most inference on-device for low latency and privacy while using cloud models for harder tasks, which the company positions as reducing cost versus cloud-only AI. It provides a single toolkit with bindings for languages and frameworks including Python, React Native, Swift, Kotlin, Flutter, and C++.

Cactus - Products & Services

  • Needle logo

    Needle

    26M-parameter open-source function-call model for small consumer devices.

    Competing Products

    Alphabet logo
  • On-Device AI Inference Engine logo

    On-Device AI Inference Engine

    Open-source hybrid edge-cloud AI inference engine for mobile devices and wearables.

    Competing Products

    Meta logo
    Apple logo

Cactus - Similar Companies

Alphabet logo

Alphabet

abc.xyz

Apple logo

Apple

apple.com

Meta logo

Meta

meta.com

Cumulus Labs logo

Cumulus Labs

cumuluslabs.io

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Lucebox

lucebox.com

Conifer logo

Conifer

conifer.build

Baseten logo

Baseten

baseten.co

Pipeshift logo

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webAI logo

webAI

webai.com

Together AI logo

Together AI

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General Compute logo

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Experiential Labs logo

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OneTriangle logo

OneTriangle

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PrismML logo

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Groq logo

Groq

groq.com

Cactus - Quick Facts

Who are Cactus' competitors?

Companies similar to Cactus include Alphabet, Apple, Meta and Cumulus Labs.

When was Cactus founded?

Cactus was founded in 2025.

Where is Cactus' headquarters located?

Cactus' headquarters is located in San Francisco, CA, US.

How many employees does Cactus have?

Cactus has 8 employees as of Jul 4, 2026.

Cactus - Classification

Industry
  • AI Infrastructure
  • Developer Tools
Ownership
  • Venture Capital
Model
  • AI Platform
  • Open Source
Revenue
  • B2B Subscription
  • Freemium
Customer
  • Developers