#1 Undetectable AI NotetakerNever say “Let me check and follow up via email” on a live call again.See Live Demo →
#1 Undetectable Real-Time AI Call Assistant & Notetaker

Never Say “Let Me Get Back To You” Again.

Blackbox is the undetectable real-time AI notetaker and meeting assistant that listens to client conversations, instantly searches your company playbooks and technical battlecards, and displays the exact answer on your screen before they finish speaking.

41%
Faster Sales Cycle Velocity
0s
Awkward Pauses & Silences
100%
Accurate Company Answers
< 350ms
Real-Time Knowledge Retrieval
Live Conversation Intelligence

What Happens When a Prospect Asks a Tough Question?

Instead of stalling or searching through 15 browser tabs, Blackbox transcribes their speech and displays the exact verified company answer on your screen in real time.

Blackbox logo
Blackbox HUD Teleprompter v2.4
Listening (System Audio + Mic)
Incoming Prospect Speech (Live)

“We really like the demo, but our compliance team insists on SOC2 Type II and HIPAA certification. Also, do you support automated cross-region database failover if us-east goes down?”

Speaker: VP of Engineering (Prospect)Latency: 0.18s
Scanned: SOC2_Type_II_Addendum.pdf (Page 4) & Architecture_SLA_2026.pdf
Suggested Spoken Response320ms Retrieval
Verified from Company Playbook

“Yes, absolutely. We maintain full SOC2 Type II and HIPAA compliance audited annually by Schellman. For high availability, our architecture features active-active cross-region replication between us-east and us-west with automatic sub-minute failover under our 99.99% enterprise SLA.”

100% Grounded in your uploaded PDFZero Hallucination

Workflow

Three Steps to Complete Live Mastery

01

Upload Your Playbooks

Drop your company sales scripts, security whitepapers, pricing tiers, and objection battlecards into your private vault.

02

Join Any Zoom, Meet or Teams

Launch the native macOS or Windows app. It captures incoming speaker audio with sub-second speech recognition.

03

Deliver Instant Flawless Answers

The minimal desktop teleprompter floats above your screen, displaying exact answers without anyone knowing.

Use Cases

Engineered For High-Stakes Professionals

Competitor FUD & Pricing

When a buyer brings up competitor discounting, get instant pricing comparison tables and kill-points.

“Unlike Competitor X, our plan includes unlimited seats and no per-query usage surcharges.”

Security & Procurement

Answer 40-question infosec checks live without waiting 3 days for your security team to reply.

“Yes, data isolation is tenant-level with custom encryption keys in your AWS KMS.”

Technical Feature Parity

Instantly pull API capabilities and roadmaps directly from engineering changelogs.

“Our REST and GraphQL endpoints support 10,000 req/sec with native webhook event callbacks.”

Competitive Edge

Why Professionals Choose Blackbox

Passive summary tools like Otter or Fireflies tell you what happened after the call. Blackbox helps you win the deal while the call is still happening.

Feature & CapabilityBlackbox NotetakerPassive Meeting NotetakersGeneric Chatbots
Real-time live assistance during the callYes — Sub-350ms instant teleprompterNo — Only post-call summariesNo — Requires manual copy-pasting
Undetectable desktop overlay HUDYes — Clean transparent floating overlayNo — Awkward bot joins your Zoom/MeetNo — Visible browser tab switching
Company Playbooks & Battlecards IngestionYes — Grounded in your uploaded PDFsNo — Only transcribes generic audioLimited — Requires pasting into prompt
Claude-Style Sliding Rate QuotasYes — 35/hr and 400/wk rolling quotasVaries by recording hoursStrict monthly usage cliffs
Single-Device Session Concurrency ProtectionYes — Hardware-locked active sessionVariesNo protection against sharing

Simple & Transparent

One Flat Plan. Unlimited Potential.

No hidden recording minute caps, per-seat surprises, or surprise renewal invoices.

Pro Access
Full Teleprompter License
$30/ month

Billed monthly. Cancel anytime with 1 click in your dashboard.

Undetectable Real-Time HUD on macOS & Windows
Continuous speech transcription with zero bot invites
Private Knowledge Vault (Upload PDFs, Battlecards, FAQs)
Claude-style rolling quotas (35 queries/hr, 400/wk)
Sub-350ms instant response retrieval
Single-device active session concurrency security
Subscribe to Blackbox Pro

Frequently Asked Questions

Everything You Need To Know

No. Unlike other tools that send a visible 'Notetaker Bot' into the participant list, Blackbox is completely undetectable. It runs locally on your Mac or Windows laptop, capturing loopback system audio. There are zero bots, zero notifications, and nobody on the call knows you are using it.