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BETA ALIA vs Joby S4

Key facts

BETA ALIA (BETA Technologies; Prototype) and Joby S4 (Joby Aviation; Pilot) are both eVTOL air taxis. Published figures: top speed 283.4 km/h vs 322 km/h; passengers 5 persons vs 4 persons. Published for only one of them: range (BETA ALIA: 622.3 km). Neither maker has published a price. Robot 500: BETA ALIA #79 (score 57.4), Joby S4 #88 (score 55.5). Disclosure: BETA ALIA has 15 sourced values (63% of tracked fields), Joby S4 has 10 (50%).

Cite: RankedRobot, https://rankedrobot.com/compare/beta-alia-cx300-vs-joby-s4/ (checked 2026-09-25) · Every figure below links to its source · BETA ALIA spec sheet · Joby S4 spec sheet

SpecBETA ALIAJoby S4
StatusPrototypePilot
PriceNot publishedNot published
Robot 500#79 · 57.4#88 · 55.5
Launch
Announced
Not disclosedNot disclosed
Not disclosedNot disclosed
Status
PrototypeManufacturerSource: beta.team (2026-09-25)
PilotManufacturerSource: jobyaviation.com (2026-09-25)
Body
Dimensions
ALIA VTOL (ALIA-250):Wingspan: 15.24ManufacturerSource: beta.team (2026-09-25)
ALIA CTOL (CX300):Wingspan: 15.24ManufacturerSource: beta.team (2026-09-25)
Not disclosedNot disclosed
Weight
Not disclosedNot disclosed
Not disclosedNot disclosed
Aircraft
Passengers
ALIA VTOL (ALIA-250):5 personsManufacturerSource: beta.team (2026-09-25)
ALIA CTOL (CX300):5 personsManufacturerSource: beta.team (2026-09-25)
4 personsManufacturerSource: jobyaviation.com (2026-09-25)
Range
ALIA CTOL (CX300):622.3 kmManufacturerSource: beta.team (2026-09-25)
Not disclosedNot disclosed
Cruise speed
Not disclosedNot disclosed
Not disclosedNot disclosed
Top speed
ALIA VTOL (ALIA-250):283.4 km/hManufacturerSource: beta.team (2026-09-25)
ALIA CTOL (CX300):283.4 km/hManufacturerSource: beta.team (2026-09-25)
322 km/hManufacturerSource: jobyaviation.com (2026-09-25)
Max take-off weight
Not disclosedNot disclosed
2,400 kg (5,291 lb)ManufacturerSource: jobyaviation.com (2026-09-25)
Payload
Not disclosedNot disclosed
Not disclosedNot disclosed
Piloting
PilotedManufacturerSource: beta.team (2026-09-25)
PilotedManufacturerSource: jobyaviation.com (2026-09-25)
Propulsion
ALIA VTOL (ALIA-250):One H500A electric motor + four V600A electric lift motors (one 5-blade fixed-pitch propeller + four 2-blade lift propellers)ManufacturerSource: beta.team (2026-09-25)
ALIA CTOL (CX300):One H500A electric motor (one 5-blade fixed-pitch propeller)ManufacturerSource: beta.team (2026-09-25)
6 electric tilt-propeller units with 5 blades eachManufacturerSource: jobyaviation.com (2026-09-25)
Certification
Not disclosedNot disclosed
Not disclosedNot disclosed
Flight time
Not disclosedNot disclosed
Not disclosedNot disclosed
Power
Battery
Not disclosedNot disclosed
Not disclosedNot disclosed
Safety
Certifications
Not disclosedNot disclosed
Not disclosedNot disclosed

Confidence labels: Manufacturer = stated by the maker · Verified = independently confirmed · Reported = credible media or retailer, not confirmed by the maker · ⚠ Unconfirmed = leak or single source · Not disclosed = not published. We never estimate missing figures. Add more robots to this comparison.

Quick answers

What is the difference between the BETA ALIA and the Joby S4?

Published figures: top speed 283.4 km/h vs 322 km/h; passengers 5 persons vs 4 persons. Published for only one of them: range (BETA ALIA: 622.3 km).

Which is cheaper, the BETA ALIA or the Joby S4?

Neither maker has published a price. Prices are shown exactly as published, never converted or estimated.

Which ranks higher in the Robot 500, the BETA ALIA or the Joby S4?

Robot 500: BETA ALIA #79 (score 57.4), Joby S4 #88 (score 55.5). Method: https://rankedrobot.com/robot500/#method

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