Ameca Vs Sophia: The Short Verdict
Ameca vs Sophia is decided by what you need the robot to do, not by which face looks more human. Ameca comes from Engineered Arts in Falmouth, UK. Sophia comes from Hanson Robotics in Hong Kong.
Ameca is the better pick if you want expressive hardware you can program and schedule. Sophia is the better fit if you care about social robotics research and public presence.
Neither robot is a household helper. If that is your goal, start with our humanoid robot comparison instead.
| Factor | Ameca (Engineered Arts) | Sophia (Hanson Robotics) |
|---|---|---|
| Maker and base | Engineered Arts, Falmouth, UK | Hanson Robotics, Hong Kong |
| Timeline | Released 2021, now generation 2.6 (2024) | Public appearances since 2016 |
| Face hardware | 27 degrees of freedom in the head | Frubber skin with authored expressions |
| Below the neck | No walking, fixed 600 mm base | Modular bust, rolling base, or robot legs |
| Speech control | Tritium AI with your choice of model | Dialog ensembles plus authored scripts |
| Price basis | Not published, quote or rental | Not published, contact the company |
| Verdict | Choose for programmable expression | Choose for social robotics presence |
Who Makes Each Robot And Where They Stand Now
Ameca and Sophia are made by two different companies with two different business models. Engineered Arts is a British robotics company based in Falmouth, Cornwall. Ameca is its flagship full-size humanoid.
Hanson Robotics is a Hong Kong company led by David Hanson. Sophia is its best-known robot and the face of its social robotics work.
Both robots are still active. Engineered Arts lists Ameca as generation 2.6, dated 2024, and Hanson launched a programmable research version called Sophia 2020.
Face Hardware In Ameca Robot Vs Sophia Robot
Engineered Arts publishes a full degree-of-freedom map for Ameca, and Hanson does not publish an equivalent single figure for Sophia. Ameca's spec page lists 61 actuated movements in total. Of those, 27 sit in the head and 5 in the neck.
Ameca ships with more than 50 preset facial expressions. Users can tune every individual degree of freedom of the eyes, mouth, eyebrows, and cheeks.
Sophia's face works differently. Hanson uses Frubber, a flexible patented skin material, pulled by motor-driven cords anchored under the surface, and describes an animation library of over 60 expressions.
| Face detail | Ameca | Sophia |
|---|---|---|
| Head degrees of freedom | 27 published | No single published figure |
| Total actuated movements | 61 published | Not published as one number |
| Expression library | Over 50 presets | Over 60 described expressions |
| Skin approach | Grey skin over a grey and metal shell | Frubber, a flexible elastomer skin |
| Design goal | Expressive and openly robotic | Human-like and relatable |
| Who edits it | Any user, per degree of freedom | Hanson's animation and research team |
Mobility: What Each Can Do Below The Neck
Neither robot walks around a room in its standard form, and this is the biggest under-reported gap between them. Ameca has no legs at all. Engineered Arts lists a fixed circular base 600 mm across and mains power at 110-240 V AC, 400 W.
Ameca's upper body still moves a lot. The published map gives 8 degrees of freedom across the shoulders, 10 across the arms, 8 across the hands, and 3 in the torso.
Sophia is modular below the neck. Hanson describes control of arms and hands, rolling bases, and walking legs. Hanson's own arm-controller paper describes arms with 28 degrees of freedom, touch sensors, and series elastic actuators.
- Ameca is a fixed-base robot and does not walk.
- Ameca needs a mains outlet, not a battery plan.
- Ameca carries 360-degree LiDAR with a 3.2 m primary safety zone.
- Sophia is usually shown as an upper body on a stand.
- Sophia has appeared on wheeled bases and on separate walking legs.
- Treat any walking Sophia footage as a configuration, not the default.
Autonomy Vs Scripted Speech: The Honest Difference
Neither robot is fully autonomous, and the honest difference is how openly each company documents the machinery behind the talking. Engineered Arts publishes its stack. Ameca runs Tritium, a cloud robot operating system with a UI, an AI layer, and browser-based Python scripting.
Engineered Arts documents Tritium AI as speech recognition in many languages, with your choice of large language model, plus tool and API calls. It also lists telepresence as a separate feature, which means a human can be in the loop.
Sophia's speech has long drawn criticism for being substantially scripted. Hanson's own archived open-source stack, HEAD on GitHub, contains a chatbot built on AIML, with hand-authored character scripts for Sophia. Hanson also publishes newer research, including the neuro-symbolic arm controller paper cited above.
The practical rule is the same for both robots. A polished demo video proves rehearsal, not autonomy, so ask which parts were authored and which ran live.
| Question to ask | Ameca | Sophia |
|---|---|---|
| Is the software documented? | Yes, Tritium UI, AI, and OS | Partly, via papers and open repos |
| Can you swap the language model? | Yes, bring your own model | Not published as a buyer option |
| Can a human drive it? | Telepresence is a listed feature | Historically yes in public events |
| Are scripts involved? | Yes, you write and edit them | Yes, authored dialogue is documented |
| Is it autonomous? | No, it is assisted and configurable | No, it is assisted and curated |
Price And Availability Compared
Neither Engineered Arts nor Hanson Robotics publishes a price for its flagship humanoid. Both robots are quote-only, so any figure you see on a resale listing is unverified.
Engineered Arts publishes far more about ordering. It offers a purchase quote and a robot rental path covering day rentals, week-long projects, monthly contracts, and custom durations, including shipping, setup, training, and on-site support.
Hanson Robotics has no comparable public rental catalogue. Interested organisations contact the company, which is the same route described on our Sophia robot review.
- Ask for the total delivered cost, not the robot cost.
- Ask who ships, installs, and breaks the robot down.
- Ask what happens when an actuator fails mid-event.
- Ask which software subscription the quote includes.
- Never budget against an unpublished price.
What Each Robot Is Actually For
Ameca and Sophia are not really competitors, because they optimise for different outcomes. Ameca is reproducible expressive hardware that a lab, museum, or brand can rent, program, and repeat. Sophia is a public narrative and social presence built around one recognisable character.
That difference shows up in what each company chose to publish. Engineered Arts documents base diameter, wall power, LiDAR safety zones, and a per-joint degree-of-freedom map, because a venue has to fit the robot into a floor plan and a risk assessment. Hanson publishes research papers and stories, because Sophia's value is attention and inquiry, not procurement.
So "which is more realistic" is the wrong question. The right question is which problem you are buying a platform for.
For background on the wider category, read what humanoid robots are, or the female humanoid robots buying guide for the design debate around human-like robot faces.
When To Choose Ameca And When To Choose Sophia
Choose Ameca when you need repeatable, programmable expression on a schedule, and choose Sophia when you want to work with a recognised social robotics programme. Ameca fits exhibitions, keynotes, education, and human-robot interaction research.
Sophia fits media, outreach, and academic collaboration around human-like faces. It is a stronger cultural reference point than a procurement option.
If neither answers your question, our full humanoid robot reviews and the Ameca robot review cover buyer fit in more detail.
| Your goal | Better pick | Why |
|---|---|---|
| Program expressive behaviour | Ameca | Published joint map and Python scripting |
| Run a venue attraction | Ameca | Published rental, setup, and support path |
| Study human-robot interaction | Ameca | Repeatable hardware and sensor stack |
| Study human-like faces | Sophia | Frubber skin and published research |
| Join a social robotics story | Sophia | Long public record and recognition |
| Get chores or factory work done | Neither | Neither robot does physical labour |
Bottom Line
Ameca vs Sophia ends without a single winner, because Ameca sells programmable expressive hardware with published specs, while Sophia carries a social robotics story with far less buyer-facing detail. Pick by the problem you need solved, and remember neither robot walks into a room and does your work.
Match the platform to your job first, then ask each company for written terms before you budget anything.
FAQs
Which is more realistic, Ameca or Sophia?
Sophia is designed to look more human, with Frubber skin and a human-like face, while Ameca is deliberately expressive but openly robotic with grey skin and a visible shell. Realism depends on whether you mean lifelike appearance or lifelike behaviour.
Sophia robot vs Ameca: which one can you actually get?
Ameca is easier to access because Engineered Arts publishes both a purchase quote path and a rental service with day, week, monthly, and custom durations. Hanson Robotics handles Sophia through direct inquiry, and neither company publishes a price.
Can Ameca or Sophia walk?
Ameca cannot walk and sits on a fixed base 600 mm across with mains power. Sophia's standard form is an upper body, though Hanson describes rolling bases and separate walking legs as options.
Is Sophia's conversation scripted?
Sophia's public conversations have long been criticised as substantially scripted, and Hanson's own archived open-source software includes hand-authored AIML dialogue scripts for Sophia. Hanson also publishes newer research on learned and neuro-symbolic control.
How many degrees of freedom does Ameca have?
Engineered Arts publishes 61 actuated movements for Ameca, including 27 in the head, 5 in the neck, 8 in the shoulders, 10 in the arms, 8 in the hands, and 3 in the torso. Hanson does not publish one equivalent figure for Sophia.
Is Ameca or Sophia the most realistic humanoid robot to buy?
Ameca is the more buyable of the two because Engineered Arts publishes specs, rental terms, and a software stack you can program. Sophia is better understood as a social robotics project than as a product you configure and deploy.