- Type
- Four legged robot dog
- Interaction
- Voice commands
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Hengbot Sirius
Chihuahua sized AI robot dog with LLM voice, made for tinkerers
Researched by Riley Hart · updated Nov 2, 2026
Is the Hengbot Sirius worth it? Sirius is a lively, open source robot dog with real AI hardware for well under the price of most legged robots. 2 independent reviewers tested it.
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Pros
- Expressive, dog like movement from 14 actuators
- Open source with PC control and community routines
- Camera with owner face recognition
- Small and light at about 1 kg
Cons
- Falls over often and struggles to get up
- About 45 minutes per charge and no dock
- Voice needs Wi-Fi and cloud AI
- No US store price confirmed; sold mainly through Kickstarter
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Sirius is a lively, open source robot dog with real AI hardware for well under the price of most legged robots. Both hands on reviewers found it falls over often, needs Wi-Fi for voice and feels more like a developer experiment than a pet. Skip it if you want a robust companion for kids or a dog that follows you around.
Best for: developers who want a cheap legged robot to program. Skip if: you want a durable pet robot for kids.
Specs
- Type
- Four legged robot dog with a 1.8 in LCD face; PRO and EDU versions
- Interaction
- Voice commands with the wake word Hey Sirius, game controller, PC remote control, on screen face menu; dances, sits and plays soccer (Gizmodo, TechRadar, CNX Software)
- Ai features
- Cloud LLM voice features; TechRadar says it uses Amazon's LLMs, CNET reported OpenAI integration. Needs Wi-Fi for voice, with no on device voice processing (Gizmodo)
- Camera
- 8 MP camera up to 1080p in the snout; recognizes and tracks its owner's face but does not follow you around (CNX Software, Gizmodo)
- Mobility
- 14 DoF: 3 per leg and 2 in the head (CNX Software, TechRadar). Both reviewers saw it fall over often
- Compute
- Quad core Arm Cortex-A53 with a 5 TOPS AI accelerator (CNX Software)
- Battery runtime
- 2250 mAh, 40 to 60 minutes active (CNX Software); TechRadar was told 45 minutes
- Charge time
- 50 to 60 minutes with the included 30W USB-C PD adapter (CNX Software); no self charging dock
3 year cost of ownership
- Robot
- n/a
- Total
- n/a
No subscription is published. The Kickstarter PRO tier included an extra battery and a Bluetooth joystick (CNX Software). No replacement part prices are published, so a 3 year cost is not computable.
Status and safety
- US availability
- Preorder
- Recalls
- ● No Hengbot robot recall in the CPSC database as of Nov 11, 2026. Checked daily.
- FCC authorized
- Not checked
- Company
- ● Active; crowdfunded startup with Kickstarter units shipping to backers
- Warranty
- Not listed
Price history
Tracked dailyPrice tracking starts when a price is confirmed.
Where to buy
- Amazon
- See price →
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What independent reviewers found
- Tiny but heavy for its size; walks, barks, dances and falls over often. Battery about 45 minutes with similar charge time over USB-C, one touch sensor on the head, no IP rating. Called it an expressive AI robot experiment far from consumer friendly.
- TechRadar (Lance Ulanoff)
- At $1,200 the movement looked realistic, but it fell often and struggled to recover. The review unit's Wi-Fi failed so voice could not be tested, some demo commands were misheard and it does not follow its owner. Said it fails as both a companion and a work robot.
- Gizmodo (James Pero, Japanese edition)
Spec history
Checked dailyNo spec changes since we started tracking on Nov 2, 2026.
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Questions buyers ask
How long does the battery last?
Hengbot's specs say 40 to 60 minutes of activity on a 2250 mAh battery; TechRadar was told about 45 minutes. A full charge takes about an hour over USB-C.
Does it work without internet?
Basic moves and controller play do, but voice commands need Wi-Fi because speech is processed in the cloud (Gizmodo).
Is it good for kids?
TechRadar did not find it kid friendly. It falls often and has no water resistance rating.
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