Compare Hearing Aids
These are the two most talked-about hearing aids of the moment, and they are genuinely different arguments about what artificial intelligence should do in your ear. Oticon Reveal, launched August 2026, runs two AI systems at once — one lifting speech, one preserving the sound of the room around you. Phonak's Audéo Infinio Ultra Sphere, launched October 2025, runs one very large network on a dedicated second chip whose only job is pulling voices out of noise.
There is one fact that shapes this comparison more than any other: Phonak's platform has been independently measured and Reveal has not. Nobody outside Oticon has tested Reveal, because it is days old. If your priority is the best documented performance in background noise available today, that is not a close call, and we would rather tell you so than sell you the newer box.
That said, Phonak's advantage comes with real costs, and there are patients for whom Reveal is the better device. We fit both at our San Mateo and San Carlos offices. Here is the comparison as we would actually walk you through it.
At a glance
- Phonak's Sphere platform holds the highest independent speech-in-noise score HearAdvisor has recorded for a prescription hearing aid. Oticon Reveal has not been independently tested by anyone.
- Reveal ships Bluetooth LE Audio, Auracast and a telecoil. The Audéo Infinio Ultra Sphere has none of the three — its Auracast support is hardware-ready but not yet enabled.
- Phonak discloses that its AI cuts battery life from about 56 hours to roughly 10 when run continuously. Oticon has not published an equivalent figure for Reveal.
- Neither device offers a behind-the-ear or custom style. If you need one, look at Oticon Intent, Starkey or ReSound instead.
Two different ideas about AI
Phonak's Spheric Speech Clarity works by extraction. It identifies speech anywhere in the room, regardless of direction, separates it from the noise and puts it back together — rather than pointing a microphone beam at whoever is in front of you. It runs on DEEPSONIC, a physically separate processor alongside the main chip, and Phonak publishes its scale: roughly 7.7 billion operations per second and a denoising network of about 4.5 million parameters. Reveal takes the opposite position. Rather than removing the room to isolate the voice, it runs a second AI whose explicit job is to keep the room — the footsteps, the acoustics, the door behind you — because those cues are how your brain works out where it is. One approach maximises clarity, the other tries to buy clarity without losing orientation. Which suits you is a real question, not a marketing one. Our explainer on what Dual AI actually means covers the wider landscape.
What the independent laboratory found
HearAdvisor, which tests hearing aids in standardised conditions and publishes the results, scores Phonak's Sphere platform at 4.6 out of 5 overall with a grade of A, and its speech-in-noise result is the highest the lab has recorded for any prescription hearing aid. To put that in context, the category average for speech in noise across prescription devices is about 1.55 out of 5. It is an exceptional result and it is not Phonak's own number. Reveal has no HearAdvisor listing at all. Its measured performance in noise is not merely worse or better — it is unknown, and will stay unknown until somebody tests it. We think that distinction matters enough to lead with.
What Oticon claims, and who measured it
Oticon reports that Reveal produces a 60% stronger brain response than Oticon Intent, citing a 2026 reference whose journal, sample size and peer-review status have not been published anywhere we can find. It reports up to 25 dB more available gain than three top competitors and up to 91% predicted speech access, both from a single internal research brief — and "predicted" means modelled, not tested on patients. These are the manufacturer's own laboratory documents, not independent findings. They tell you what Oticon was aiming at. They do not tell you where Reveal would land on the same bench that produced Phonak's score.
Where Reveal is clearly ahead: connectivity
This is the flip side, and it is substantial. Reveal ships with Bluetooth LE Audio and Auracast working from day one, and includes a telecoil. The Audéo Infinio Ultra Sphere has neither. Its hardware is described as Auracast-ready pending a firmware update that had not arrived as of this writing, and Phonak's Audéo line carries no telecoil at all. If you use hearing loops — in a theatre, a place of worship, a lecture hall, a ticket window — that is not a minor spec-sheet difference, it is the difference between the device working in that room and not. Phonak counters with universal Bluetooth Classic that pairs directly with both iPhone and Android, holds eight pairings with two connections live at once, and supports the Roger remote microphone system, which is genuinely the best assistive microphone range in the industry.
The battery difference is bigger than it looks
Phonak publishes something most manufacturers do not: what its AI actually costs in power. The Audéo Infinio Ultra Sphere runs up to 56 hours with Spheric Speech Clarity switched off, and roughly 10 to 11 hours with it running continuously. Phonak's own guidance for mixed use — a few hours of AI, some streaming — is a floor of about 16 hours. In practice this means the feature you are buying the device for is not something you leave on all day. Oticon has not published an equivalent figure for Reveal, which is not the same as Reveal having no cost; it means the number is not disclosed. We would rather you knew the shape of this trade-off before you choose, and we will show you the battery behaviour during a trial rather than argue it from a page.
Styles: neither one will help if you need a behind-the-ear
Worth saying plainly, because it disqualifies both for some patients. Phonak's AI chip is available only in a rechargeable receiver-in-canal model. So is Reveal. Neither company puts its flagship AI into a behind-the-ear device, a custom in-the-ear device, or a disposable-battery option. If you need one of those, this comparison is the wrong one for you — Oticon Intent still offers a behind-the-ear model, and Starkey and ReSound both put their current AI platforms into custom styles. We would steer you there instead.
The rest of the spec sheet
Both carry an IP68 rating for dust and moisture. Both have tinnitus sound therapy built in — Tinnitus Balance on the Phonak, Tinnitus SoundSupport on the Reveal. Both offer smartphone apps with remote adjustments so we can fine-tune between visits. Phonak's health features are limited to basic step and activity tracking, with no fall detection; Oticon has not marketed wellness sensors on Reveal either. Independent testing rated the Phonak's own-voice naturalness at 2.8 out of 5, which is worth raising with us if you dislike the sound of your own voice through hearing aids, because it is a common early complaint and there are fitting strategies for it.
How we would actually decide with you
If measured performance in noisy rooms is the thing you care most about and you can live with charging discipline, no telecoil and no Auracast, Phonak's Sphere platform is the one with the evidence, and we will fit it. If you spend time in looped venues, want Auracast now rather than eventually, prefer sound that keeps the room rather than stripping it, or simply want the full day of battery without rationing a feature, Reveal is a reasonable choice — accepting that you are early and that nobody has measured it yet. Either way, we verify the fitting with real-ear measurement, because the gap between a verified and an unverified fitting is routinely larger than the gap between these two devices. Bring us a quote from anywhere and we will read it with you free of charge.
Frequently asked questions
What patients often want to know
Which is better in a noisy restaurant, Oticon Reveal or Phonak Sphere?
On the only independent evidence that exists, Phonak — its Sphere platform holds HearAdvisor's highest recorded speech-in-noise score for a prescription hearing aid. Reveal has not been measured by any independent laboratory, so no honest comparison in noise can be made yet. We would demonstrate both in a real room rather than settle it on paper.
Does the Phonak Sphere support Auracast or a telecoil?
Neither, as of this writing. The hardware is described as Auracast-ready pending a firmware update that has not been released, and the Audéo Infinio line does not include a telecoil. Oticon Reveal has both working today, which matters in looped theatres, places of worship and lecture halls.
Is Phonak's battery life really that much worse?
It depends entirely on how you use the AI. Phonak publishes up to 56 hours with Spheric Speech Clarity off and roughly 10 to 11 hours with it running continuously, and suggests around 16 hours for mixed use with some streaming. Most people do not need the AI running all day, but it is worth understanding before you buy.
Can I get either of these as a behind-the-ear hearing aid?
No. Phonak's AI processing is in a rechargeable receiver-in-canal model only, and Oticon Reveal launched in a single rechargeable receiver-in-canal style. For a behind-the-ear or custom device with current technology, we would look at Oticon Intent, Starkey Omega AI or ReSound instead.
Are the 60% and 25 dB figures for Reveal reliable?
They are Oticon's own laboratory and modelling results, published in the company's research briefs rather than in independent or peer-reviewed literature. The 60% brain-response figure cites a 2026 reference whose journal and sample size we could not locate. We report them because they explain Oticon's design intent, not because they predict your experience.
Do you fit both at your offices?
Yes, at both San Mateo and San Carlos, and we have no incentive to steer you either way. Call 650-342-9449 and we will test your hearing, talk through the rooms you actually struggle in, and recommend the device that fits them.