1
Install & Configure
Download Klayr for your platform. Paste your API key once — Gemini, OpenAI, or Claude. Works immediately, no account required.
Takes less than 2 minutes.
Now live — try it free
Walk into every interview ready for anything.
Klayr sits invisibly on your screen during live interviews. The moment a question appears, you get a clear, confident answer — in real time, completely hidden from your interviewer.
Free to try · Mac, Windows & Linux · No account needed
Instant
Answers in seconds
Invisible
They see nothing
Private
Data stays on-device
13 handcrafted role prompts — not one generic template. Klayr speaks SWE, PM, DSA, System Design, Data Science, DevOps, ML, QA, and more.
How it works
From download to interview-ready in minutes.
No complicated setup. No manual. Three steps and you're in.
2
Start a Session
Launch Klayr before your interview begins. Choose your role — SWE, System Design, Behavioral, DSA, Data Science, or PM. Enable Race Mode for fastest responses.
Runs invisibly in the background.
3
Ace Every Question
Klayr scans all connected monitors continuously. The moment a question appears — typed or spoken — it streams a spoken-ready answer. You stay composed.
Zero dead-time with non-blocking queue.
Why Klayr
Built for the moment that matters.
Every feature exists because it solves a real problem — the kind that costs you the offer.
Multi-Monitor Scan
All connected screens captured and analyzed in parallel. Questions detected on any monitor the moment they appear — no manual switching required.
Race Mode
Fire two LLM providers simultaneously. The first token wins. Empirically ~40% faster time-to-first-token vs single-provider. Never wait on a slow API again.
Content Protection
Klayr's window is completely invisible to Zoom, Google Meet, Microsoft Teams, and all other screen-sharing software. Your co-pilot stays your secret.
Multi-Panel Workspaces
Open up to 5 independent panels simultaneously. Keep system design references, behavioral frameworks, and role cheat sheets open alongside the live question stream.
Audio Detection
Captures system audio and microphone simultaneously. Whisper transcription + Web Speech API for live streaming. Voice Activity Detection filters silence automatically.
Built-In Code Runner
Execute Python, JavaScript, TypeScript, Java, C++, Go, and Rust directly in Klayr. Verify AI-generated code with one click before presenting it.
Answer Refinement
Every answer gets three instant refinement options: Rephrase for a different angle, Expand for more depth, Shorter for concise delivery. One click, instant result.
Bring Your Own Key
Paste your Gemini, OpenAI, or Claude API key and Klayr connects directly — no markup, no middleman. Your keys never leave your machine.
Smart AI Routing
Klayr automatically selects the right model for each task. Gemini Flash Lite for instant screen detection, Gemini 2.5 Flash for high-quality answers. No setup needed — the smartest model runs where it matters most.
Interview modes
13 roles. One tool.
Switch interview styles instantly. Klayr knows exactly what each type of interviewer wants — the right depth, tone, and vocabulary, every time.
13 handcrafted prompts
Every role has its own purpose-built system prompt — not one generic template stretched across all roles like competitors do.
Switch roles mid-interview — no restart needed
- Technical depth
Software Engineer
- Architecture decisions
- OOP/FP principles
- API design
- Code review criteria
- STAR-method
HR / Behavioral
- Conflict resolution
- Leadership moments
- Amazon LPs
- Teamwork stories
- Algorithmic
Coding / DSA
- Time & space complexity
- Edge cases
- DP patterns
- Graph algorithms
- Architecture
System Design
- Capacity estimation
- Database selection
- CDN & caching
- Fault tolerance
- ML & Stats
Data Science
- Feature engineering
- Model evaluation
- Bias/variance
- A/B testing
- Frameworks
Product Manager
- RICE/ICE prioritization
- Go-to-market
- User personas
- Metrics & OKRs
- Quality & Testing
QA Engineer
- Test strategy
- Bug reporting
- Automation frameworks
- Edge case coverage
- Pipelines & ETL
Data Engineer
- ETL design
- Schema modeling
- Spark & dbt
- Data quality & SLAs
- Infrastructure
DevOps / SRE
- CI/CD pipelines
- Kubernetes & Docker
- Incident response
- SLOs & error budgets
- UI & Performance
Frontend Engineer
- Core Web Vitals
- Accessibility (a11y)
- React patterns
- CSS architecture
- AWS / GCP / Azure
Cloud Engineer
- Infrastructure as code
- Cost optimization
- Security & IAM
- Multi-region design
- Models & MLOps
ML Engineer
- Model deployment
- Feature stores
- MLOps pipelines
- Inference optimization
- Any interview
General / Other
- Analytical questions
- Strategy problems
- Cross-functional topics
- Case studies
The alternatives
Why candidates choose Klayr.
More features. Lower cost. The choice makes itself.
| Feature | Klayrby Tattva Mind | Chiku AI | Parakeet |
|---|---|---|---|
| macOS Support | arm64 + x64 | arm64 only | |
| Windows Support | |||
| Linux Support | AppImage + .deb | ||
| Multi-Monitor Scan | All screens, parallel | ||
| Race Mode (dual LLM) | |||
| Audio Detection | Real-time streaming | Batch only | Batch only |
| Whisper Transcription | Partial | ||
| Web Speech API | |||
| Voice Activity Detection | |||
| Hold Mode (in-person) | |||
| Built-in Code Runner | 7 languages | ||
| Content Protection | Full stealth | Partial | |
| Multi-LLM Support | Gemini, GPT-4o, Claude | 1 LLM | 1 LLM |
| Bring Your Own Key | Limited | ||
| Answer Refinement | Rephrase/Expand/Shorter | Limited | |
| Multi-Panel Workspaces | Up to 5 panels | 1 panel | 1 panel |
| Session Debrief + AI Score | 1-10 scoring | ||
| Practice Mode | 20+ questions | ||
| Interview Roles | 13 handcrafted modes | Generic | Generic |
| Answer History | 300 entries + export | Limited | Limited |
| Custom System Prompt | |||
| Free Tier | Full features, BYOK | Limited trial | Limited trial |
Based on publicly available pricing and features as of June 2025.
Real results
Candidates who got the offer.
4.9 / 51,200+ users
- L6 Offer
I went from 2/5 on system design to getting an offer from Meta. Klayr's Race Mode means answers come before the interviewer finishes typing. Used it across 6 rounds and never felt unprepared.
Sarah K.
Software Engineer L6 · Meta
- 4 FAANG
Cleared 4 FAANG rounds back to back. Multi-panel workspace kept System Design cheat sheets open while the main window handled live questions. Session Debrief scored me 8.5/10 on average.
Raj M.
CS Graduate · IIT Delhi → Google
- 2 Rounds
I was nervous about PM frameworks. Klayr's role-specific prompts gave me RICE, ICE, and user empathy answers on demand. The answers were articulate and interview-ready. Got the offer in 2 rounds.
James L.
Product Manager · Series B Startup
GoogleMetaAmazonMicrosoftAppleNetflix
Pricing
Your first hour is free.
No card. No setup. Just download and go. Upgrade only when you're ready.
🎉 Launch pricing — ends August 31, 2026
Prices shown in ₹ for your region
Your first hour is on us — no card, no key, no catch. Every premium feature unlocks the moment you make your first purchase.
Up to 56% off — Launch pricing
Pay once · Credits never expire · Use at your own pace · Bring your own AI key
50% OFFSave ₹149
50% OFFSave ₹200
55% OFFSave ₹1,100
51% OFFSave ₹1,800
Best Value
56% OFFSave ₹5,000
| Pack | Hours | Original | Launch Price | You Save | Off |
|---|---|---|---|---|---|
| Quick Top-up | 30 min | ₹299 | ₹150 | ₹149 | 50% off |
| Hour Pass | 1 hr | ₹399 | ₹199 | ₹200 | 50% off |
| Starter Pack | 5 hrs | ₹1,999 | ₹899 | ₹1,100 | 55% off |
| Active PackBest Value | 10 hrs | ₹3,499 | ₹1,699 | ₹1,800 | 51% off |
| Power Pack | 25 hrs | ₹8,999 | ₹3,999 | ₹5,000 | 56% off |
Credit packs require your own AI key. Every feature in the app is fully unlocked.
Not sure which fits you?
Interviewing occasionally → Credit Pack (pay once, use anytime, never expires). Actively job hunting → Lite (unlimited sessions, bring your own AI key). Want zero setup → Pro (no key needed, just sign in and go).
First hour free — no card, no setup.·Cancel anytime.·Credits never expire.
FAQ
Questions you're probably thinking.
Clear answers before your first session.
Yes. Klayr uses OS-level content protection to make its window invisible to any screen-sharing software — including Zoom, Google Meet, Microsoft Teams, Webex, and OBS. When you share your screen, Klayr simply does not appear.
Klayr supports three LLM providers: Gemini 2.0 Flash (the default — fastest and most cost-effective), GPT-4o (OpenAI, excellent for complex reasoning), and Claude 3.5 Sonnet (Anthropic, outstanding for nuanced long-form answers).
The free trial gives you 1 hour of session time — no card, no API key required. It covers the Software Engineer role only. Race Mode, audio capture, multi-monitor scan, answer refinement, code runner, all 13 roles, and session debrief unlock on any paid plan (Lite or Pro).
Yes. Klayr is fully cross-platform. macOS users get DMG for both Apple Silicon (arm64) and Intel (x64). Windows users get an NSIS installer. Linux users get an AppImage and a .deb package.
Race Mode fires two LLM providers simultaneously with every detected question. Klayr streams the response from whichever provider returns its first token first, then discards the slower connection. In testing, Race Mode reduced 95th-percentile time-to-first-token by approximately 40%. To use Race Mode you can either (a) bring your own second API key in Settings, or (b) purchase the Race Mode Add-on (₹299/month) which adds GPT-4o-mini as an automatic secondary — no extra key needed.
Yes. Enable Hold Mode before your session starts. In Hold mode, Klayr queues detected questions without streaming answers immediately — you review queued questions at your own pace, on a secondary device or a screen angled away from the interviewer.
No. Klayr processes everything locally on your device. Questions, answers, and session history are all stored in local JSON files. Nothing is sent to Tattva Mind's servers. API calls go directly from your machine to your chosen LLM provider.
Just paste them in Settings → API Keys. Your key is stored locally, used only to call the LLM API directly from your device, and never shared with Tattva Mind. No additional charges or markups — you pay your LLM provider at their standard rates.
Start today
Your next offer starts here.
Free to try. Takes five minutes to set up. Thousands of candidates have already made Klayr part of their prep.
Free to tryNo account neededYour keys stay privatev1.3.2 — Latest