Osaki Massage Chair OP-Ai Xrest 4D+
HSA/FSA eligible — pay with pre-tax dollars.
6-Month Price Protection: if our price drops within 6 months, Black Friday included, we'll refund the difference. Details
Every chair we sell is on the floor in both showrooms (3,500–4,000 sq ft each), so you can try them all in one visit. Walk-ins welcome · Hours
Key specs
- Size upright
- 66.5″ L × 31.5″ W
- Size reclined
- 76″ L × 31.5″ W
- Weight limit
- 260 lb
- Power
- 110-120V
- Warranty
- Manufacturer warranty — see warranty details
- Delivery
- White-glove delivery and setup included
House of Massage Chairs · Osaki Platinum
On the Osaki OP-AI Xrest 4D+ massage chair, Muscle Tension Detection, automatic shoulder scanning, an adjustable 4D SL-track system, and three control paths make the Xrest easier to configure day to day.
01 · In Brief
The AI label is not the decision. The workflow is.
In brief
The Osaki OP-AI Xrest 4D+ massage chair is a premium single-mechanism model centered on scan-informed setup and adjustable control. The chair is listed for users up to 260 lb on a 17-inch seat and needs a published three inches of wall clearance. Compare the OP Kairos 4D LT if heated rollers or a wider seat matter more.
Scan
Scan data informs the starting program; automatic shoulder adjustment helps align the chair.
4D control
Five speeds, seven intensities, width adjustment, and spot or partial control change the roller feel.
Track
The SL-track runs from the neck and shoulders through the hamstring area.
Lower body
Calf kneading, air compression, three rollers per foot, and extension make the lower body active.
Control
Use the touchscreen, XRest phone app, or predetermined Alexa commands.
Space
One-stage zero gravity pairs with a published three-inch wall clearance.
02 · Anatomy of the Xrest
Five systems. One workflow.
Start with the scan, then decide what to change.
- 01
- 02
- 03
- 04
- 05
Fig. 01 — Muscle Tension Detection
The Scan
Scan first. Then decide how much automation you want.
Muscle Tension Detection uses scan information to tailor a starting program. Automatic shoulder adjustment separately scans body position for alignment.
- Muscle Tension DetectionScan-informed program logic
- Shoulder adjustmentAutomatic body-position scan
Why it mattersThe value is reduced setup, not the AI label itself.
The Mechanism
4D is adjustable here, not just a label.
The 4D mechanism provides five speeds, seven intensities, width adjustment, and spot or partial-back control along an SL-track to the hamstrings.
- Speed5 levels
- Intensity7 levels
- TrackSL-track to hamstrings
Why it mattersAdjustment range matters more than the 4D label alone.
The Lower Body
The footrest does more than hold your legs.
Vertical calf kneading works with air compression, while three rollers sit under each foot. The footrest extends up to nine inches.
- CalvesKneading rollers + air compression
- Feet3 rollers per foot
- ExtensionUp to 9″
Why it mattersTest calf contact and foot pressure directly; the hardware is listed, the feel is personal.
The Recline
Full recline without surrendering the wall.
One-stage zero gravity uses space-saving motion with a published three-inch wall clearance. Length increases from 66.5 inches upright to 76 inches reclined.
- Zero gravity1 stage
- Wall clearance3″
Why it mattersPlan reclined footprint, wall clearance, and walking space together.
The Controls
Three ways to run the same chair.
The swivel touchscreen is the primary controller. The XRest app supports iPhone and Android, while Alexa uses predetermined commands.
- TouchscreenSwivel-mounted controller
- PhoneiPhone + Android app
- VoiceAlexa commands
Why it mattersMultiple control paths matter most after you are reclined.
03 · The Automation Ritual
Automation earns its place by removing decisions.
A practical sequence is simple: scan, choose one of 16 automatic programs, then adjust only what you notice.
Less setup, with manual control still available.
- i.ScanEstablish the starting point
- ii.Choose a program16 automatic options
- iii.Fine-tune pressure7 intensity levels
- iv.Add warmthLumbar + feet heat
- v.Stay reclinedTouchscreen, app, or Alexa
Judge the Xrest on comfort, fit, routine, and control preference, not treatment outcomes.
04 · Body Fit
The scan helps. It does not replace fit.
The scan cannot change a 17-inch seat, 20-inch shoulder width, or 260-pound limit. Fit still wins.
Compare the fit in person →Let the chair scan, then verify where it lands.
Confirm that the shoulder system and roller path land comfortably after the scan.
The footrest extends up to nine inches.
No user-height range is published. Use the nine-inch footrest extension, then confirm calf and foot alignment directly.
17-inch seat. 20-inch shoulder width.
These dimensions matter most for larger frames and shared households.
Published maximum: 260 pounds.
Different users can start from a fresh scan.
Shared use is practical only if each regular user fits the physical chair.
05 · Feature Index
Feature, then consequence.
Uses scan information to tailor the starting program.
Five speeds, seven intensities, width, spot, and partial-back control.
Runs the roller route from neck and shoulders through the hamstrings.
Adds full-body compression; confirm the cell count if it matters.
Adds warmth at the lumbar area and feet.
Offers guided sessions with less setup.
Provides six manual massage styles for direct selection.
Combines calf kneading, air compression, and three rollers per foot.
Adds leg-length flexibility; no height range is published.
Pairs recline with space-saving movement.
Touchscreen, iPhone/Android app, or predetermined Alexa commands.
Audio, quick chair controls, and device charging.
06 · In Your Home
Plan the room before delivery day.
is the published wall clearance. Upright length is 66.5 inches; reclined length is 76 inches.
Footprint
Upright: 31.5″ W x 66.5″ L x 60.5″ H. Reclined: 31.5″ W x 76.0″ L x 56.0″ H.
Delivery path
Chair weight is 254.6 lb; minimum published door width is 31.5 inches. Measure the entire route.
Power
Published supply: 110-120V, 50/60Hz. Plan an accessible existing outlet.
Finishes
- Taupe
- Black
- Brown
Delivery planning
07 · Ownership
The transaction has three facts to settle.
Delivery
House of Massage Chairs describes eligible White Glove service as in-home placement, basic setup, packaging removal, outlet connection, and a basic function check, subject to access and service availability.
Warranty
5-year Osaki warranty — see warranty details.
Osaki lists 3 years of full service plus 2 additional years of parts. Your purchase is also covered by our 6-Month Price Protection, and you can pay with Affirm, as low as 0% APR, subject to eligibility.
Access & service
The OP-AI Xrest 4D+ is a relaxation and wellness product, not a medical device.
08 · The Buyer Fit
Choose it for the workflow, not the acronym.
A strong fit if you…
- Want scan-informed automation to handle more initial setup.
- Want five speed and seven intensity levels.
- Prioritize active calf and foot massage.
- Want touchscreen, app, and Alexa control.
- Need a published three-inch wall clearance.
- Fit the 17-inch seat, 20-inch shoulder width, and 260-pound limit.
Consider another model if you…
- Want heated rollers or a published 54-inch track; compare the Kairos.
- Need a seat wider than 17 inches.
- Prefer fewer connected controls.
Closest Alternative
When the Kairos is the better handoff.
The closest alternative is the OP Kairos 4D LT. Use the differences below to decide which deserves a closer look.
| Decision point | OP-AI Xrest 4D+ | OP Kairos 4D LT |
|---|---|---|
| Personalization | Muscle Tension Detection plus automatic shoulder adjustment. | Real-time body sensing 4D mechanism. |
| Roller & heat emphasis | 4D mechanism with five speed and seven intensity levels; lumbar and foot heat. | 4D heated roller mechanism plus six heating zones. |
| Programs | 16 automatic programs and 6 manual massage styles. | 20 automatic modes and 5 manual massage styles. |
| Controls | Touchscreen, XRest phone app, and Alexa voice commands. | Touchscreen and intelligent voice control; no verified Xrest-style phone app. |
| Room & seat | 31.5″ wide; 76″ reclined; 17″ seat; 3″ wall clearance. | 35″ wide; 71″ reclined; 20″ seat. |
Specification Index
Full specifications.
Model
Massage mechanism
Scanning & programs
Compression, heat & lower body
Recline & placement
Chair dimensions & fit
Controls & convenience
Power & packaging
Purchase support
Free US shipping with white-glove delivery and setup. 5-year Osaki warranty: 3 years of full service plus 2 additional years of parts — see warranty details.
Questions
OP-AI Xrest 4D+ questions, answered.
Where can I buy the Osaki OP-AI Xrest 4D+ massage chair?+
At House of Massage Chairs, an authorized Osaki dealer. Order the Osaki OP-AI Xrest 4D+ online with free US shipping and white-glove delivery and setup, or purchase it at our San Jose (Westfield Oakridge) or Pleasanton (Stoneridge) showroom, where walk-ins are welcome. Call or text (669) 214-8889 with questions before ordering.
Can I try the Osaki OP-AI Xrest 4D+ before I buy it?+
Yes. The Osaki OP-AI Xrest 4D+ is on the floor at both of our showrooms, San Jose (Westfield Oakridge) and Pleasanton (Stoneridge), and walk-ins are welcome, no appointment needed. Each showroom is 3,500–4,000 sq ft with 45+ chairs, so you can compare the OP-AI Xrest 4D+ against every alternative in one visit.
Should I buy the Osaki OP-AI Xrest 4D+ or the OP Kairos 4D LT?+
Choose the Osaki OP-AI Xrest 4D+ for scan-informed setup, the XRest phone app, and a 31.5-inch-wide frame with a published 3-inch wall clearance. Choose the OP Kairos 4D LT if heated rollers, six heating zones, a 54-inch SL track, or a 20-inch seat matter more; the OP-AI Xrest 4D+ seat measures 17 inches.
Is the Osaki Xrest massage chair worth it?+
Yes, if you value automated setup. The Osaki OP-AI Xrest 4D+ combines Muscle Tension Detection and automatic shoulder adjustment with an adjustable 4D mechanism, 16 automatic massage programs, calf kneading, three rollers per foot, and touchscreen, app, or Alexa control. If you need a seat wider than 17 inches or prefer heated rollers, compare the OP Kairos 4D LT against the current price above.
What does the AI label actually do on the OP-AI Xrest 4D+?+
It sets the starting point. On the Osaki OP-AI Xrest 4D+, Muscle Tension Detection uses scan information to tailor a starting program, and a separate body scan sets the automatic shoulder adjustment, which aligns the shoulder massage to your body position. Afterward, you adjust 5 speeds, 7 intensities, and roller width manually, so the value is reduced setup, not the AI label itself.
Will the Osaki OP-AI Xrest 4D+ fit through my door and in my room?+
Yes, if every doorway on the delivery path measures at least 31.5 inches. The Osaki OP-AI Xrest 4D+ measures 31.5 x 66.5 x 60.5 inches upright and 31.5 x 76.0 x 56.0 inches reclined, with a published 3-inch wall clearance. The chair weighs 254.6 lb, so measure corridors, stairs, elevators, and the final placement before delivery.
What size person fits the Osaki OP-AI Xrest 4D+?+
260 lb is the published maximum user weight for the Osaki OP-AI Xrest 4D+, with a 17-inch seat and a 20-inch shoulder width. No user-height range is published, so use the footrest extension of up to 9 inches as the leg-length guide, and confirm shoulder alignment and calf position for every regular user.
What massage mechanism and track does the OP-AI Xrest 4D+ use?+
A four-dimensional massage mechanism on an SL-track. The Osaki OP-AI Xrest 4D+ offers 5 adjustable speed levels, 7 intensities, adjustable width, and spot or partial-back control, and the SL-track travels from the neck and shoulders through the hamstring area. Below it, vertical calf kneading operates with air compression, and each foot has three rollers.
What warranty comes with the Osaki OP-AI Xrest 4D+?+
5 years. Osaki lists a 5-year warranty for the Osaki OP-AI Xrest 4D+: 3 years of full service plus 2 additional years of parts coverage. House of Massage Chairs is an authorized Osaki dealer, so request the written coverage before ordering. Your OP-AI Xrest 4D+ purchase is also covered by our 6-Month Price Protection.
Is the Osaki OP-AI Xrest 4D+ HSA/FSA eligible?+
Yes. The Osaki OP-AI Xrest 4D+ is HSA/FSA eligible with a Letter of Medical Necessity (LMN). Our HSA/FSA massage chair guide explains how purchasing with HSA or FSA funds works, and you can call or text (669) 214-8889 with questions before ordering the OP-AI Xrest 4D+.
Before You Decide
Let the scan prove itselfon your body.
Test scan alignment, preferred pressure, calf and foot contact, touchscreen reach, footrest length, and the 17-inch seat.
The OP-AI Xrest 4D+ is on the floor in both showrooms, San Jose (Westfield Oakridge) and Pleasanton (Stoneridge). Walk-ins are welcome, no appointment needed; each showroom carries 45+ chairs, so you can compare them all in one visit. Call or text (669) 214-8889.
The Decision
Osaki OP-AI Xrest
4D+ Massage Chair.
Choose the Xrest for scan-informed setup, adjustable 4D control, active lower-body hardware, multiple control paths, and three-inch wall clearance. Compare the Kairos if heated rollers or a wider seat matter more.
Osaki OP-AI Xrest 4D+ Massage Chair · See current price above. Free US shipping with white-glove delivery and setup. 5-year Osaki warranty — see warranty details.
Compare similar chairs
Same brand or a similar price. Crossed-out prices are the brand’s MSRP.
-
Osaki
Osaki Massage Chair OP Kairos 4D LT
MSRP$12,999$6,999 -
Osaki
Osaki Massage Chair 4D Manhattan Duo Mech
MSRP$9,099$7,999 -
Osaki
Osaki Zion 4D Massage Chair
MSRP$12,999$10,499
Try it before you buy. Every chair we sell is on the floor in both showrooms — San Jose (Westfield Oakridge) and Pleasanton (Stoneridge Mall). Walk-ins welcome, no appointment needed · Questions? Call or text (669) 214-8889.
Still deciding? How to choose a massage chair by budget · Massage chairs compared for comfort and fit
What showroom visitors say on Google
Google reviews of our San Jose and Pleasanton showrooms (store reviews, not reviews of this product), quoted as written.
Great experience. I have been to this store twice and tried many of the chairs before choosing the Osaki Trion. The sales consultants are patient, competent and thorough. I never felt pressured to make a decision until I was ready.
J. M. · Pleasanton showroom · Google review
Amazing service from Gio! Totally no rush, no pressure to make a purchase! Gio was open, and took the time and initiative to make sure we were getting the chair that best fits our needs and pricing. We glad we made this purchase!
Y. G. · Pleasanton showroom · Google review
Henry and Shawn were absolutely amazing in helping us select the chair of my dreams. They went over and above in not only helping me compare the models and benefits but to also explain the technology behind the various ones I tried. Go here and be happy with the chair you pick!
M. R. · San Jose showroom · Google review
Just had an amazing experience buying my first massage chair. Gabe was very patient and explained in detail all the different chairs available in their showroom. They have a lot of different chairs in their showroom. I highly recommend coming here if you need to buy a massage chair!
S. L. · Pleasanton showroom · Google review
My husband and I stopped in on the fly to look at a foot massager. We got the best help from Shawn. He was so patient with us in our indecisiveness. Shawn is very knowledgeable in the inventory and we willingly tried a massage chair to check the new tech of the chairs. We tried several different chairs and ended up purchasing the 'Ferrari' chair. We are so grateful for his patience, his knowledge, and his continually helping us and with all the settings. We are excited about our new purchase and we are looking forward to the benefits and relaxing moments that await. Thank you Shawn for your help and good luck to you!
S. C. · San Jose showroom · Google review
Great experience shopping for a massage chair here! The store has a wide selection of massage chairs that you can actually try, which really helped us compare the different options.
My husband and I spent about two hours trying different chairs, and Shawun was very patient and helpful throughout the entire process. He let us try all the chairs we were interested in and clearly explained the features and differences between each one. We finally found a chair that we both really liked.
We really appreciate Shawun help, as well as Michael’s assistance. Great selection and very helpful service. Highly recommended!
N. M. · Pleasanton showroom · Google review
My wife and I have been looking at Massage Chairs on line for quite some time. Everything I've read, said to go out and try several to see what is the best fit, comfort and price.
Today, we went to House of Massage Chairs and met with Henry Ipek. He showed us numerous massage chairs to find out what was the best fit for us. I think we probably tried 10 different chairs while we were in the store.
Finally, my wife and I finally agreed on one chair that we both loved. It wasn't the chair I came in for or saw on line, but it was 10X better. We spent a little more than we initially wanted to, but when you figure this is going to last us a long time, we went ahead and pulled the trigger.
Henry was wonderful dealing with and gave us a good and fair price on the massage chair.
We couldn't be more happy with our purchase and the service we got from Henry.
T. S. · San Jose showroom · Google review
We were very impressed with the selection of massage chairs and the service we received. We were able to take our time trying many different models. Shawun was knowledgeable and patient, explaining the features of each chair and helping us find one that both my wife and I liked. Michael was also very helpful. We really appreciated their friendly service and would definitely recommend this store.
S. C. · Pleasanton showroom · Google review
Henry at House of Massage Chairs provided truly exceptional service from start to finish. He spent a generous amount of time with my wife and me, helping us find the right massage chair for both of our needs. He patiently walked us through the different brands, features, and technologies, explaining each brand’s approach and how those differences translate into the actual massage experience. His knowledge and attention to detail helped us feel informed and confident in our decision.
What really set Henry apart was how far he went to help us beyond the store visit. He assisted with delivery and even helped us navigate the return of a massage chair we had recently purchased. That level of care and follow-through made a big difference to us.
Throughout the entire process, we felt that Henry genuinely cared about finding the best fit for us. If you’re considering a massage chair, I highly recommend visiting House of Massage Chairs and asking for Henry. Thank you, Henry, for your patience, expertise, and outstanding service!
B. C. · San Jose showroom · Google review
Salesman Gabe spent time with us explaining the features of each chair and the differences between chairs. No pressure sales.
D. H. · Pleasanton showroom · Google review
We had a wonderful experience here! Henry was incredibly welcoming, knowledgeable, and professional. He took the time to understand what we were looking for and quickly helped us narrow down the options based on our preferences.
The store carries a great selection of different brands and models, probably one of the most comprehensive selections we’ve seen in the Bay Area. It was really convenient to be able to try so many different chairs in one place, and we found one we loved pretty quickly.
Henry also did a great job explaining the differences between the chairs, as well as the warranty and after-sales service for each option. We really appreciated how transparent and thorough he was—it made us feel very comfortable and confident about our purchase.
Overall, it was such a pleasant and stress-free shopping experience. Great selection, great service, and very knowledgeable staff. Highly recommend Henry and this store if you’re looking for a massage chair!
C. C. · San Jose showroom · Google review
We visited the store intending to buy a chair on father's day. Gabe's exceptional patience, comprehensive knowledge of all available chairs, and friendly, non-pressuring demeanor made the experience truly enjoyable. We spent over 3 hrs trying almost every chair, so much so that we didn't realize the mall had already closed. Despite this, Gabe graciously encouraged us to take our time and not rush our decision. Ultimately, we purchased a chair that exceeded our initial budget, but its quality has proven invaluable as we use it daily. Thank you Gabe again!
C. B. · Pleasanton showroom · Google review
Read all reviews on Google: San JoseRead all reviews on Google: Pleasanton
Quoted as written on Google, reviewer initials only. Ratings and review counts as of Oct 2026.