What is the difference between Oura Ring 4 and Stelo?

Oura Ring 4 and Stelo are both biometric robots on the DEPLOY registry. They differ in maker, maturity, price, verified deployments, and how much of their autonomy is independently verified. See the table above for the full head-to-head; each figure is sourced.

Which is cheaper, Oura Ring 4 or Stelo?

Oura Ring 4 has the lower recorded price on the DEPLOY registry than Stelo. Prices are sourced; see each record for whether the figure is a manufacturer target, an estimate, or an actual sale price.

Is Oura Ring 4 or Stelo more autonomous?

Oura Ring 4 has more capabilities independently verified as autonomous on the DEPLOY registry than Stelo. DEPLOY counts a capability as autonomous only when verified at a real deployment, not from a demo or a vendor claim.

Which has more verified deployments, Oura Ring 4 or Stelo?

Oura Ring 4 and Stelo each have 1 verified deployment on the DEPLOY registry (confirmed at named sites with primary sources).

Buying guide

Oura Ring 4 vs Stelo in 2026

Comparing 2 humanoid robots across availability, pricing, capabilities, and verified deployments. Current as of 2026.

Key differences

Oura Ring 4 has more capabilities independently verified as autonomous (1 vs 0).
Oura Ring 4 has the lower recorded price.

Attribute	No image on file Oura Ring 4 View full model page →	Stelo View full model page →
Manufacturer	Oura	Dexcom
Form factor	biometric	biometric
Maturity	commercial	commercial
Autonomy	✓ 1 verified autonomous	—
Availability	shipping-nowshipping	shipping-nowshipping
Price	$349-$499 or $70/year lease or $6/month subscription (actual sale price)	$89-$99 (actual sale price)
Capability claims	Tracks sleep (autonomous, verified) Tracks heart health (claimed-only, claimed) Tracks body temperature (claimed-only, claimed) Tracks menstrual cycle (claimed-only, claimed)	—
Brain	—	—
Verified deployments	1Global	1Global
Privacy practices	12cloud-upload, biometric-storage, data-sale, data-deletion-control, biometric-storage, data-retention, location-tracking, training-data-use, biometric-storage, data-sale, data-deletion-control, data-retention	4biometric-storage, training-data-use, third-party-sharing, data-deletion-control
Sources on file	24	11

Editorial summaries

Oura Ring 4

The Oura Ring 4 (Gen 4, late 2024, from Oura, founded 2013 in Oulu, Finland) is a titanium biometric smart ring and the study-first archetype of the biometric cohort. Its 'Smart Sensing' recessed sensors (PPG heart rate and HRV, red and infrared blood-oxygen, multi-point skin temperature, accelerometer) feed 50-plus metrics: sleep staging and Sleep Score, Readiness, Activity, stress, cycle tracking, a VO2 Max estimate, and an LLM 'Oura Advisor'. It is sold as a purchase (from about $349) plus a required Oura Membership ($5.99/month); the AI augments genuine biometric sensing rather than being the product. DEPLOY records commercial maturity and a reported $11 billion valuation (October 2025). The verified-vs-claimed throughline: Oura is positioned as general wellness and is not FDA-cleared for diagnostics, and it ran a blood-pressure study in December 2025 before marketing blood pressure, the study-first counterpoint to Whoop's market-first BP Insights. Oura is also the patent-holder in the smart-ring litigation (RingConn settled; Ultrahuman was ITC import-banned via the '178 patent).

Stelo

Dexcom's Stelo is the first-ever FDA-cleared over-the-counter (no-prescription) glucose biosensor (De Novo, March 5, 2024; US launch August 26, 2024): a 15-day continuous glucose monitor for adults 18+ not on insulin (type 2 not on insulin, plus non-diabetic users tracking how diet and exercise affect glucose). It is the generative-AI end of the glucose cell: Weekly Insights run on Google Cloud's Vertex AI and Gemini, with AI photo meal-logging and personalized daily recommendations, the AI substance that carries it across the biometric boundary. Pricing is about $89 for a 2-week sensor on a biweekly subscription model (around $99/month). From DexCom (NASDAQ: DXCM), Stelo is the OTC product line, separate from the prescription G7. Cap-flag: the cleared indication is an OTC CGM for adults 18+ not on insulin; it is explicitly NOT cleared for problematic hypoglycemia and has no low-glucose alerts, so it should not be read as a diabetes-management device.

Common questions

What is the difference between Oura Ring 4 and Stelo?: Oura Ring 4 and Stelo are both biometric robots on the DEPLOY registry. They differ in maker, maturity, price, verified deployments, and how much of their autonomy is independently verified. See the table above for the full head-to-head; each figure is sourced.
Which is cheaper, Oura Ring 4 or Stelo?: Oura Ring 4 has the lower recorded price on the DEPLOY registry than Stelo. Prices are sourced; see each record for whether the figure is a manufacturer target, an estimate, or an actual sale price.
Is Oura Ring 4 or Stelo more autonomous?: Oura Ring 4 has more capabilities independently verified as autonomous on the DEPLOY registry than Stelo. DEPLOY counts a capability as autonomous only when verified at a real deployment, not from a demo or a vendor claim.
Which has more verified deployments, Oura Ring 4 or Stelo?: Oura Ring 4 and Stelo each have 1 verified deployment on the DEPLOY registry (confirmed at named sites with primary sources).

Recent coverage

Clingy Virgin Media fined £28M for refusing to take the hintOura Ring 4 · The Register · 2026-07-08
Vehicle Tech Week: ‘Standardization in the age of AI’ roundtable highlights risks and opportunitiesOura Ring 4 · Autonomous Vehicle International · 2026-07-08
Dexcom’s latest executive pay disclosure covers new CEO’s big yearStelo · Medical Design & Outsourcing · 2026-06-15
Will Giving Everyone a Blood Sugar Monitor Lead to Better Health Outcomes? Maybe, But Only If We Tell People What to Do With The InfoStelo · The Spoon · 2026-01-15

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