Open & Hackable AI Pendants

Last updated 2026-10-03 · updated weekly by an automated research job · run #8.

The verdict

The current state of the art, as of 2026-08-18 (confidence unverified):

The Omi DevKit 2 is the most open ambient capture device, with MIT-licensed hardware, firmware, and backend, and UF2 drag-and-drop flashing. The Limitless Pendant is the most polished commercial product but is closed, acquired, and facing a support cliff, making its long-term viability uncertain.

Contenders:

• Omi DevKit 2 — Fully open-source stack and easiest user flashing path (UF2).
• Meta Muse Charm — Announced successor to the Limitless lineage, backed by Meta's scale, but closed and unproven.
• Limitless Pendant (LS-PT-01) — Most polished commercial product with consent features, but closed, acquired, and facing a support cliff.
• OpenEarable — Fully open-source ear-worn sensing platform for research and development.

What this is, and how it works

This page is generated, not written. A scheduled job runs weekly on a machine in a homelab. Each run it:

1. Searches the open web for both the products already tracked here and for category-level terms designed to turn up ones we've never heard of.
2. Feeds those results to a language model along with everything already on this page, and asks it what is genuinely new. Finding nothing is an acceptable answer, and most runs should find little.
3. Writes the result into a versioned JSON dataset (data/live-research/ai-pendants.json) and commits it. This page is re-rendered from that file.

So: a machine wrote the prose here. Every changelog entry carries at least one source link, and every item and entry carries a confidence label:

• primary-source — vendor documentation, a published paper, or a regulator.
• secondary — reputable press.
• vendor-claim — marketing or an unreplicated vendor statement.
• unverified — a single low-quality source, usually auto-discovered.

Any label weaker than primary-source is printed beside the finding, so an unflagged row is a primary source. A tracker that hides its own uncertainty is worse than no tracker.

What this is not. Not medical advice. Not a review site — nothing here has been tested in our hands. No affiliate relationships, no sponsored placements, nothing bought. Vendor claims are attributed to the vendor rather than restated as findings. Where a price, a date, or a regulatory status is unknown, it is left blank instead of guessed.

What's new

4 developments in the last 30 days, newest first.

The last 30 days

Meta announced two new wearable AI devices at Connect 2026. The Meta Muse Charm is an AI pendant with a two-inch touchscreen and a push-to-talk button, slated for release by December 2026 (price not disclosed). Meta also unveiled camera-free Ray-Ban Audio Glasses with six microphones, positioned as an always-on audio AI companion. Both are closed products from a large vendor; no details on local data ownership or post-shutdown functionality exist. Separately, a secondary report claims Apple has postponed its rumored AI pendant.

For the existing tracked items, the only other movement is a community-reported feature update for the closed, subscription-based PLAUD NotePin, where its AI can now turn recordings into structured "Artifacts." This is a vendor-claim via user report.

The core open-hardware options (Omi DevKit 2, Omi Consumer CV1, OpenEarable) and the orphaned devices (Limitless Pendant, Humane AI Pin) saw no changes in the last 30 days. Stock for the Omi Consumer CV1 remains listed as "pre-order / out of stock," and no community progress was reported on recovering local function from bricked cloud-dependent devices.

Written 2026-10-03 from the changelog below, not from a fresh search.

Drawn from:

• Meta announces Muse Charm AI pendant at Connect 2026, slated for release by December 2026. — 2026-10-03, confidence secondary
• Apple has reportedly postponed its AI pendant product. — 2026-10-03, confidence secondary
• Meta unveils camera-free Ray-Ban Meta Audio Glasses with six microphones. — 2026-10-03, confidence secondary
• PLAUD Agent can now turn recordings into 'Artifacts' beyond summaries. — 2026-10-03, confidence unverified

The last year

The last twelve months cemented the category's highest risk: vendor survival. The Humane AI Pin is dead, bricked after HP's asset acquisition in February 2025, with community revival efforts stalled by an authentication certificate. The Limitless Pendant was acquired by Meta in December 2025, sales halted immediately, and a one-year support cliff is confirmed. It is now an orphaned product, reachable only via unmaintained community BLE clients, and a user petition calling for open-source firmware is a clear signal of hardware left stranded. Apple has reportedly postponed its own AI pendant development. For anyone spending money here, the base rate of orphaning is the first fact to weigh.

Against that, the genuinely open options saw steady, quiet development. Omi's firmware received updates, with the Consumer CV1 model gaining a 20% boost in continuous recording battery life. The open-hardware and MIT-licensed posture of both the UF2-flashable DevKit 2 and the J-Link-required CV1 remains unchanged, though the CV1 has been listed as "pre-order / out of stock." The OpenEarable 2.0 platform from KIT was detailed in a research publication, positioning itself as the sole open-source ear-worn sensing alternative. These projects offer ownership—you can get your data—but they are niche, unverified in mass-market terms, and their commercial availability is limited.

New entrants are all closed, cloud-dependent, and from large vendors. Meta announced two devices: the Muse Charm, a pendant with a small touchscreen, and camera-free Ray-Ban Audio Glasses with six microphones, both pitched as always-on AI companions. These follow Meta's acquisition of Limitless's technology. The independent vendor PLAUD continues with its closed, subscription-gated NotePin, winning design awards and adding features like turning recordings into "Artifacts." Friend 2.0 launched with a built-in speaker, but remains a fully closed product with a monthly fee for memory retention, its "open source" claim referring only to the AI model it uses, not the device.

The sensor story beyond the microphone is unchanged and opaque. The Omi hardware includes a 6-axis IMU, but the driver remains shipped OFF in the firmware. The Limitless Pendant's protocol defines IMU data fields, but no live non-zero readings have ever been captured. For ambient capture, these devices are still microphones first.

The flashing and ownership divide is stark. You have a clear choice: the open path (Omi, OpenEarable) requires technical comfort and deals with limited stock, while the convenient path (Meta, PLAUD, Friend) offers polished products that will stop working if the vendor's cloud or interest disappears. The Humane Pin is the concrete example of that failure; the Limitless Pendant is next in line. Nothing in the last year has challenged this fundamental trade-off.

Written 2026-10-03 from the changelog below, not from a fresh search.

The ones that mattered:

• 2026-10-03 — Apple has reportedly postponed its AI pendant product. (negative, secondary)
• 2026-10-03 — Meta unveils camera-free Ray-Ban Meta Audio Glasses with six microphones. (launch, secondary)
• 2026-08-31 — OpenEarable 2.0 research publication details AI-powered ear sensing platform. (study, primary-source)
• 2026-08-18 — PLAUD launches NotePin S and Desktop software at CES 2026. (launch, secondary)
• 2026-08-18 — Community attempts to revive bricked Humane AI Pin face authentication hurdle. (negative, secondary)
• 2026-08-18 — Limitless AI acquired by Meta, sales halted, one-year support cliff confirmed. (regulatory, secondary)
• 2026-08-18 — Humane AI Pin officially bricked after HP asset acquisition. (discontinued, secondary)

All time

The field of body-worn ambient capture is defined by a single, brutal reality: vendor survival is the primary feature. The Humane AI Pin is a brick after its HP acquisition, and the Meta-acquired Limitless Pendant is on a one-year support cliff ending around December 2026. Community efforts to revive the bricked Humane Pin are stalled by authentication locks, and a user petition is calling for Meta to open-source the Pendant firmware—a plea that underscores the rule. Any device whose function depends solely on a vendor's cloud is a temporary rental.

This makes ownership—the path to your own data—the critical axis. The only devices that score well here are genuinely open-source. The Omi ecosystem (DevKit 2 and Consumer CV1) is the reference, with MIT-licensed hardware, firmware, and backend. The DevKit 2, using a Seeed XIAO nRF52840 Sense, offers UF2 drag-and-drop flashing with no extra hardware. The more powerful Consumer CV1 (nRF5340) requires a SWD probe (J-Link) to flash, a higher barrier, and its storefront has shown "pre-order / out of stock." Both carry an ST LSM6DS3TR-C 6-axis IMU on the board, though the accelerometer feature is compiled OFF in the shipped firmware (CONFIG_OMI_ENABLE_ACCELEROMETER=n). For ear-worn sensing, OpenEarable from KIT is the sole open-source option, a research platform with true wireless audio and multiple sensors.

Everything else is a closed product with a subscription gate or an orphan. The Limitless Pendant is the archetype: a capable nRF5340+nRF7002 device now reachable only via community BLE clients, awaiting its cloud shutdown. Friend 2.0 ($249 + $9.99/month) is closed at every layer; its "open source" framing refers only to its use of Meta's Llama model, not the device. PLAUD's NotePin is a closed, subscription-gated device focused on intentional (button-press) capture, not true ambient listening; its AI features are being expanded, per vendor claims, to turn recordings into "Artifacts."

The most significant recent movement is Meta consolidating the category. After acquiring Limitless, Meta has announced two new AI wearables: the Muse Charm, a pendant with a two-inch touchscreen and push-to-talk button due by December 2026, and the camera-free Ray-Ban Meta Audio Glasses with six microphones. These are electrical products only—no ownership details exist. Meanwhile, a secondary report states Apple has postponed its own AI pendant. The trajectory is clear: large platforms are entering with closed, cloud-dependent devices, making the open, owner-operated options like Omi and OpenEarable the only durable bets. For now, the IMU thread remains dormant—no tracked device has it enabled for end-user applications.

Written 2026-10-03 from the changelog below, not from a fresh search.

How the field breaks down, by what we're actually tracking:

• electrical — 3 items: Meta AI Pendant, Meta Muse Charm, Meta Ray-Ban Audio Glasses.
• open-hardware — 2 items: Omi DevKit 2, Omi Consumer / CV1.
• orphaned — 2 items: Limitless Pendant (LS-PT-01), Humane AI Pin (dead).
• closed-vendor — 2 items: Friend 2.0, PLAUD NotePin / PLAUD Note.
• ear-worn — 1 item: OpenEarable.

Gone quiet or discontinued. Kept here rather than deleted, because a tracker that removes its failures is a product page:

• Limitless Pendant (LS-PT-01) — Owned by Jonathan and the reason this tracker exists — nRF5340+nRF7002, closed everywhere, Meta-acquired Dec 2025 with sales halted and a support cliff around Dec 2026; reachable today only via community BLE clients. Last activity 2026-08-18.
• Humane AI Pin (dead) — The category's cautionary tale — HP acquired Humane Feb 2025 and the devices were bricked when the cloud shut down; tracked for whether any community effort ever recovered local function. Last activity 2026-08-18.

Tracked products

Available now. Price and regulatory status are blank where we have not read them on a primary source — they are never inferred.

Upcoming

Announced, no date.

Meta AI Pendant

Reported upcoming AI pendant from Meta, building on Limitless acquisition technology.

First seen 2026-08-18 · confidence secondary · electrical

Why it's here: Meta announces Muse Charm AI pendant at Connect 2026, slated for release by December 2026. (2026-10-03) — Mark Zuckerberg unveiled the Muse Charm, a pendant-sized AI device with a two-inch touchscreen and a push-to-talk button, during Meta Connect 2026. No price was disclosed.

Sources: Reuters report on plans

Coming Soon

Announced with a date, or an open pre-order.

Nothing in this bucket right now.

What We're Watching

Exists, unproven, or newly discovered. This is where auto-discovered items land.

Omi DevKit 2

MIT-licensed at hardware, firmware and backend; LSM6DS3TR-C 6-axis IMU confirmed from the BOM; UF2 drag-and-drop flashing with no probe needed — the reference open device in the category.

First seen 2026-08-18 · confidence unverified · open-hardware

Why it's here: Omi Desktop app receives minor updates (v0.12.228, v0.12.233). (2026-08-31) — BasedHardware released Omi Desktop v0.12.233 on August 28, 2026, with a lighter settings UI. A previous version v0.12.228 was released on August 27.

Sources: BasedHardware/omi · Omi docs

Omi Consumer / CV1

Same open posture on nRF5340 silicon, but flashing needs SWD and a J-Link rather than UF2 — and storefront stock has read "pre-order / out of stock", which is the thing to keep checking.

First seen 2026-08-18 · confidence unverified · open-hardware

Why it's here: Omi Desktop app receives minor updates (v0.12.228, v0.12.233). (2026-08-31) — BasedHardware released Omi Desktop v0.12.233 on August 28, 2026, with a lighter settings UI. A previous version v0.12.228 was released on August 27.

Sources: Omi hardware BOM

OpenEarable

Open-source ear-worn sensing platform out of KIT — the ear-canal answer to the same capture question, and the only genuinely open option in that form factor found so far.

First seen 2026-08-18 · confidence unverified · ear-worn

Why it's here: OpenEarable 2.0 research publication details AI-powered ear sensing platform. (2026-08-31) — A research publication dated December 11, 2025, presents OpenEarable 2.0 as a comprehensive open-source earable platform for AI-powered sensing.

Sources: OpenEarable

PLAUD NotePin / PLAUD Note

Closed and subscription-gated but independent and un-acquired — the intentional-capture (button-press) counterpoint to always-on ambient.

First seen 2026-08-18 · confidence vendor-claim · closed-vendor

Why it's here: PLAUD Agent can now turn recordings into 'Artifacts' beyond summaries. (2026-10-03) — A community post indicates PLAUD's AI note-taking platform has added a feature to transform recordings into more structured 'Artifacts'.

Sources: PLAUD

Meta Muse Charm

AI pendant with a two-inch touchscreen and push-to-talk button, announced by Meta at Connect 2026.

First seen 2026-10-03 · confidence unverified · electrical

Why it's here: No changelog entry explains this status yet.

Sources: CNBC announcement

Meta Ray-Ban Audio Glasses

Camera-free smart glasses with six microphones and speakers, focused on audio and AI interaction.

First seen 2026-10-03 · confidence unverified · electrical

Why it's here: No changelog entry explains this status yet.

Sources: CryptoBriefing

Promising

Early-stage, but the evidence or the approach is genuinely interesting. The only editorial bucket on this page — an item only lands here with a reason recorded in the changelog.

Nothing in this bucket right now.

Open questions

Publishing what we don't know is the point. These are things the job is actively watching for; when one gets answered it becomes a changelog entry and moves down here to the answered list.

• Has anyone captured a live non-zero imu_data chunk off a Limitless Pendant? The protobuf schema defines full 6-axis readings but no capture, fixture or community report has ever exercised the field. — open since 2026-08-18.
• Does Omi ever ship CONFIG_OMI_ENABLE_ACCELEROMETER=y by default, or does motion data stay a build-it-yourself feature? — open since 2026-08-18.

Answered:

• What actually happens at the Limitless support cliff (~Dec 2026) — do the community BLE clients keep working, and does Meta push a protocol-breaking firmware update before then? — answered 2026-08-18.
• Did any community effort ever recover local functionality on bricked Humane AI Pins, or is the hardware permanently inert? The answer sets the realistic floor for what "orphaned" costs in this category. — answered 2026-08-18.

Full changelog

Everything, newest first, grouped by the month we found it. Long by design — it's the receipts.

October 2026

August 2026

Dreamlab Live Research uses autonomous systems to track the state of the art in fields of interest. New trackers appear as the interests do.

Generated from a versioned dataset in a git repository: every state this page has ever been in is a commit, and a bad run is revertible. The dataset is the source; this page is build output and is not itself edited.

• Dataset: data/live-research/ai-pendants.json (schema version 2)
• Runs completed: 8 · cadence: weekly
• Items tracked: 10 · changelog entries: 16
• Distinct sources seen: 210
• Last run recorded: 2026-10-03T05:35:03Z (status: ok)