Sandbar Stream
Smart ring with voice-activated capture (tap to record, not always-on). Personal knowledge graph with companies, people, meetings; pulls context from past meetings and shared interests. Ex-Meta engineering team.
Active · Verified 2026-10-22 · fresh as of 2026-10-22 · 33 cited facts, 5 with a third-party source · 1 recorded change · Suggest a correction
At a glance
- Type
- Smart ring + voice-activated capture vendor fix
- Tier
- T2
- Section
- Voice-first / wearable AI memory
- Latest release
- not applicable — not OSS fix
- License
- not applicable — not OSS fix
- GitHub
- not applicable — no GitHub repo fix
- Pricing
- Ring preorder $249 (silver) / $299 (gold); Pro subscription $10/mo (free 3mo for preorders) third-party fix
- Funding
- $36M total Series A · 2026-03 third-party fix
- Freshness
- 2026-10-22 fix
- Layer
- agent-infra repo fix
- Licensing
- commercial third-party fix
Memory taxonomy
- storage
- file
- retrieval
- extraction-pull
- persistence
- long-term
- update
- append-only
- unit
- episode
- governance
- user-controllable
- conflict
- none
When to use
Optimised for: always-on capture + lifelog timeline + voice UX
Anti-fit: not for enterprise compliance-regulated environments without explicit consent flows
Pros & cons
Pros
Smart-ring form factor + voice activation differentiates from always-on competitors; fresh $23M Series A.
Cons
Hardware preorder, not yet shipping; ring form factor narrower attach surface than pendant or pin.
Claims & capabilities
$23M Series A (March 2026). "Mouse for voice" positioning. Ring preorder $249–$299; shipping targeted summer 2026.
Technical surface
- API surface
- searched not found
- Backend storage
- searched not found
- Deployment
- Managed-only; still listed as preorder on site as of Oct 2026
- Embedding model
- searched not found
- Multi-tenancy
- searched not found
- MCP
- yes — first-party Stream MCP server (api.sandbar.com/mcp, OAuth; Claude, Claude Code, ChatGPT, Codex); invite-only beta
- A2A
- searched not found
- OpenTelemetry
- searched not found
Alternatives to Sandbar Stream → live options ranked by shared design, licence, hosting and MCP support
Similar systems
Other voice-first / wearable ai memory in the catalog, ranked by inbound references.
- Granola T1
Mac/iOS app (no hardware). Captures meeting audio via system-audio tap (no bot joining); generates notes from your shorthand + audio. Local audio processing claim; cloud for summaries. Enterprise tier opts out of model training.
- Bee T1
Acquired by Amazon (Jul 2025); bee.computer is now © Amazon and sells the Bee Frontier wearable ($74.99), with a Bee Eclipse device marked coming soon. Small wearable (pendant / clip / bracelet). Continuous capture; converts speech to text immediately; never stores raw audio . Daily summaries, personal fact sheet, to-do suggestions. Cloud processing on derived text only.
- Era Computer T5
Software platform / OS layer for AI wearables (glasses, rings, pendants, speakers) that abstracts hardware from AI orchestration. Memory and model providers are pluggable and user-controlled rather than cloud-locked; supports 130+ LLMs from 14+ providers. Founded 2025 by ex-Humane team.
- Friend T1
Pendant necklace (~2 inches). Always-on listening feeds a persistent AI companion persona. Companionship-framed rather than productivity / recall. Cloud LLM backend; no detailed encryption claims.
- Limitless T1
Former Rewind/Limitless lifelog (Pendant wearable + screen/audio capture with timeline search). Acquired by Meta (2025-12); Pendant no longer sold as of 2025-12-05, service withdrawn from the EU, UK, Brazil, China, Israel, South Korea and Turkey on 2025-12-05, desktop/web recording ended and Rewind capture disabled from 2025-12-19; existing Pendant customers supported throughout 2026.
- Memories.ai LVMM 2.0 / Project LUCI T2
Developer-first reference platform for AI wearables. LVMM 2.0 captures visual data through video, encodes it into frames on-device, and stores moments as searchable memories; companion app surfaces past conversations/decisions/experiences. Hardware-level security via Qualcomm partnership; cloud sync for enterprise tiers.
Sources (32 cited facts, 5 third-party)
Each fact links to the page it came from; the badge says who published it (how to read sources).
- What it is Smart ring + voice-activated capture vendor
- What it does & what's distinct Smart ring with voice-activated capture (tap to record, not always-on). Personal knowled… vendor
- Claims / benefits $23M Series A (March 2026). "Mouse for voice" positioning. Ring preorder $249–$299; ship… vendor
- Modalities voice vendor
- Created 2025-11 third-party
- Funding $36M total Series A · 2026-03 third-party
- Customers / scale 11-50 ppl Pre-order, not yet shipping, no customers yet vendor
- Pricing Ring preorder $249 (silver) / $299 (gold); Pro subscription $10/mo (free 3mo for preorde… third-party
- Deployment Managed-only; still listed as preorder on site as of Oct 2026 vendor
- HQ US vendor
- Founders / pedigree ex-CTRL-Labs (Meta-acquired) co-founders Mina Fahmi (ex-Kernel; ex-Magic Leap) and Kirak… third-party
- Memory volume / scale no scale claim vendor
- Consistency strong vendor
- Versioning immutable append-log vendor
- Tombstoning append-only no delete vendor
- Schema evolution free-form / no schema vendor
- Namespace primitives hierarchical vendor
- Contradiction handling always append (no resolution) vendor
- Forgetting policy user-controlled forget vendor
- MCP support yes — first-party Stream MCP server (api.sandbar.com/mcp, OAuth; Claude, Claude Code, Ch… vendor
- Validated verticals consumer / individual (voice + wearable users) vendor
- Time to running <1day (purchase hardware + pair) or <10min (software-only meeting bots) vendor
- Anti-fit not for enterprise compliance-regulated environments without explicit consent flows vendor
- Optimised for always-on capture + lifelog timeline + voice UX vendor
- Adjacent infrastructure self-contained device + cloud back-end vendor
- Pros Smart-ring form factor + voice activation differentiates from always-on competitors; fre… vendor
- Cons Hardware preorder, not yet shipping; ring form factor narrower attach surface than penda… vendor
- Project & sources sandbar.com Stream product $23M Series A (TC) vendor
- architecture-deployment-locus cloud vendor
- licensing-bucket commercial third-party
- positioning-platform-vs-product product vendor
- taxonomy-three-layer-rollup agent-infra repo
What changed
Changes to this record's lifecycle, licence, release, pricing and hosting facts, from the catalog's git history. Subscribe (Atom)
- 2026-10-22
- Deployment “Managed-only (preorder; shipping summer 2026)” → “Managed-only; still listed as preorder on site as of Oct 2026” source
- MCP support first recorded as “yes — first-party Stream MCP server (api.sandbar.com/mcp, OAuth; Claude, Claude Code, ChatGPT, Codex); invite-only beta” source