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AutoFlight Prosperity vs Joby S4

Key facts

AutoFlight Prosperity (AutoFlight; Prototype) and Joby S4 (Joby Aviation; Pilot) are both eVTOL air taxis. Published figures: passengers 5 persons vs 4 persons. Published for only one of them: range (AutoFlight Prosperity: 200 km); top speed (Joby S4: 322 km/h). Neither maker has published a price. Robot 500: AutoFlight Prosperity #125 (score 47.5), Joby S4 #88 (score 55.5). Disclosure: AutoFlight Prosperity has 10 sourced values (50% of tracked fields), Joby S4 has 10 (50%).

Cite: RankedRobot, https://rankedrobot.com/compare/autoflight-prosperity-vs-joby-s4/ (checked 2026-09-25) · Every figure below links to its source · AutoFlight Prosperity spec sheet · Joby S4 spec sheet

SpecAutoFlight ProsperityJoby S4
StatusPrototypePilot
PriceNot publishedNot published
Robot 500#125 · 47.5#88 · 55.5
Launch
Announced
Not disclosedNot disclosed
Not disclosedNot disclosed
Status
PrototypeManufacturerSource: autoflight.com (2026-09-25)
PilotManufacturerSource: jobyaviation.com (2026-09-25)
Body
Dimensions
Wingspan 15,000 mm × Length 11,600 mm × Height 3,300 mmManufacturerSource: autoflight.com (2026-09-25)
Not disclosedNot disclosed
Weight
Not disclosedNot disclosed
Not disclosedNot disclosed
Aircraft
Passengers
5 personsManufacturerSource: autoflight.com (2026-09-25)
4 personsManufacturerSource: jobyaviation.com (2026-09-25)
Range
200 kmManufacturerSource: autoflight.com (2026-09-25)
Not disclosedNot disclosed
Cruise speed
Not disclosedNot disclosed
Not disclosedNot disclosed
Top speed
Not disclosedNot disclosed
322 km/hManufacturerSource: jobyaviation.com (2026-09-25)
Max take-off weight
2,400 kg (5,291 lb)ManufacturerSource: autoflight.com (2026-09-25)
2,400 kg (5,291 lb)ManufacturerSource: jobyaviation.com (2026-09-25)
Payload
Not disclosedNot disclosed
Not disclosedNot disclosed
Piloting
Not disclosedNot disclosed
PilotedManufacturerSource: jobyaviation.com (2026-09-25)
Propulsion
All-Electric, distributed propulsion (5th-gen power unit, redundant architecture)ManufacturerSource: autoflight.com (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 AutoFlight Prosperity and the Joby S4?

Published figures: passengers 5 persons vs 4 persons. Published for only one of them: range (AutoFlight Prosperity: 200 km); top speed (Joby S4: 322 km/h).

Which is cheaper, the AutoFlight Prosperity 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 AutoFlight Prosperity or the Joby S4?

Robot 500: AutoFlight Prosperity #125 (score 47.5), Joby S4 #88 (score 55.5). Method: https://rankedrobot.com/robot500/#method

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