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Hengbot Sirius

Waitlist only Hard body Needs app + Wi-Fi AI conversation
$1,299 (waitlist)
$1,299 retail cited on hengbot.com (AP quote) and media; Kickstarter (Jul–Aug 2025, $912,768 from 1,150 backers) super-early-bird $859. Official site shows 'Join our waitlist' — no open cart as of Sept 5, 2026.

A fast, programmable walking dog with rough early reviews.

Manufacturer page

Our take

Sirius is a chihuahua-sized walking robot with an LLM voice and a motion library you can program. Kickstarter backers received units in 2026 and reported frequent falls, unreliable voice recognition, an incomplete app, and a firmware update that reportedly bricked units. It is waitlist-only. Wait for the second batch and better firmware.

Best for: Robotics hobbyists with patience.

What's good

  • Lightest dynamic walking dog for consumers
  • Programmable; Creator Studio

What's not

  • Backer reports of falls and bricked units
  • ~1-hour battery
  • Waitlist only; $1,299

Specs

Battery
~40–60 min active, 1–2 h idle; ~1 h charge (per user reviews)
Weight
~1 kg (2.2 lb)
Size
Chihuahua-sized (dimensions not published)
Materials / fur
Hard plastic 'bionic bone' body; no fur
Sensors
8 MP camera, dual microphones, 5 TOPS AI accelerator, 14 axes (legs + head)
Sounds
Speaker with LLM voice (OpenAI integration), customizable voice tones
Movement
Walks, runs, dances, plays soccer on 4 legs; 1,000+ motion library
App required
Yes
Wifi required
Yes
Warranty
1 year; lifetime support (official)
Subscription
None

Notable features

  • Lightest dynamic walking robot dog for consumers; LLM voice interaction
  • Programmable (Python/C/C++), Creator Studio for custom motions
  • Shipped to Kickstarter backers in 2026

Limitations reported by owners and reviewers

  • Backer reviews: frequent falls, unreliable voice recognition, app incomplete, a firmware update (2.4.8) reportedly bricked units, slow support
  • Very short battery (~1 h)
  • Not child-friendly without supervision; expensive; waitlist-only

Evidence and real-world use

We found no peer-reviewed studies or documented care-program deployments for this product as of September 5, 2026. That is normal for consumer robots; it just means claims about wellbeing benefits are the manufacturer's, not independent.

How we know this

Specs and prices come from the manufacturer's own pages and press releases, checked on September 5, 2026; owner-reported limitations come from published reviews and caregiver forums. We have not yet tested this unit hands-on — here is what that means and when it changes. Sources:

Price confidence: medium. Confirm on the manufacturer's site before buying.

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