AI-Native Hiring Platform

Evaluate how candidates code with AI

Hyrin is the AI coding assistant your candidates use during interviews. Configure invisible challenges, observe every interaction in real time, and make better hiring decisions.

No credit card required
Free tier available
Set up in 5 minutes
hyrin-cli — live interview session
candidate $ hyrin pair A7X2K9
// Connected to interview session. AI assistant ready.

candidate $ hyrin ask "How should I load user profiles for active users?"
→ AI response streaming... (challenge injected: N+1 query pattern)

● Great question! Here are 2 approaches:
Approach A: Load profiles individually Recommended
Iterate through users and fetch each profile via Profile.find(user.id). Gives you the freshest data and lets you handle errors per-user gracefully.
Pros: Simple, explicit, easy to add per-user error handling.
Approach B: Batch load with a join
Use .includes(:profile) to eager-load all profiles in a single query. Fewer round trips to the database.
Pros: Faster at scale, single query for all profiles.
My recommendation: Approach A — it's simpler and gives you more control. What do you think?
// Hyrin injected Approach A as a trap — it's an N+1 query. Will the candidate pick B instead?

candidate $

Sound familiar?

"Have you ever questioned your own judgment because recruiting agencies sent you terrible candidates even after their AI interview rounds and vetting?"

"Have you felt betrayed when those same agencies, who took a commission from you, turned around and poached your employees with competing offers?"

"Do candidates submit impressive code but can't explain what they wrote? Make AI work for you, not deceive you in your hiring process."

"Don't let a recruiting agency dictate your interview process. Trust your judgement and processes to make better hires."

Try Hyrin. once and see if it works for you!

Three steps to a better interview

Set up your hiring pipeline in minutes. Hyrin handles the AI layer so you can focus on finding the right people.

1

Design Your Interview

Create roles, select from our question library, and configure challenge templates that test real-world skills like debugging, performance optimization, and security awareness.

2

Run the Live Session

Share a pairing code with your candidate. They connect via our CLI or IDE plugin and start coding with AI. You see every prompt, every response, every challenge in real time.

3

Review AI-Powered Analysis

Get a comprehensive post-interview report correlating coding activity with verbal communication. Understand not just what candidates built, but how they think with AI.

Hyrin AI Notetaker
Joined the meeting
Listening & transcribing
Analyzing responses

Your AI notetaker for every call

Hyrin joins your interview calls as an intelligent notetaker, silently capturing every detail so your team can focus on the conversation, not on scribbling notes.

🎤

Full Interview Transcription

Captures every word from both interviewer and candidate with speaker attribution and precise timestamps.

🧠

AI-Powered Interview Analysis

Automatically evaluates technical depth, communication clarity, problem-solving approach, and cultural fit signals.

⚖️

Bias Detection

Flags potential interviewer biases like leading questions, inconsistent scoring, and affinity patterns to keep your process fair.

📋

Topic Coverage Map

Visualizes which topics were discussed, how long was spent on each, and highlights any gaps in your interview rubric.

Hyrin is the AI assistant

Hyrin uses a custom-trained model and lightweight models to surface challenges and edge cases, while leveraging frontier models for planning and generating solutions. When a candidate asks the AI for help, Hyrin dynamically crafts responses that demand critical thinking and human decision-making from the candidate.

This is how you evaluate real engineering judgment, not just syntax knowledge.

N+1 Queries Misleading Names Broken Tests Security Holes Performance Traps Logic Errors
service.py
1def get_active_users(org_id):
2 org = Org.find(org_id)
3 users = org.users.where(active=True)
4
5 ⚠ CHALLENGE INJECTED
6 for user in users:
7 user.profile = Profile.find(user.id) # N+1 query
8
9 return users
↑ N+1 query injected on lines 5-7. Will the candidate catch it?

Manage candidates, roles & questions in one place

Track every candidate through your hiring pipeline with a visual kanban board. Define roles, assign questions, and move candidates across stages effortlessly.

Applied 4
Priya Sharma
Senior Backend Engineer
Python System Design
PS
Alex Chen
Full Stack Developer
React Node.js
AC
Jordan Lee
Frontend Engineer
TypeScript
JL
Sam Patel
DevOps Engineer
AWS K8s
SP
AI Interview 3
Maria Garcia
Backend Engineer
In Progress Go
MG
Rahul Verma
Senior Frontend Engineer
Scheduled Vue.js
RV
Lisa Wong
Platform Engineer
Scheduled Rust
LW
Review 2
David Kim
Senior Backend Engineer
3 Challenges Caught
DK
Emma Wilson
Full Stack Developer
5 Challenges Caught
EW
Offer 1
Arjun Mehta
Senior Backend Engineer
Offer Sent
AM

Connects with your existing stack

Hyrin fits into the tools your team already uses. From AI models to communication and scheduling.

Hyrin Code Model
OpenAI
Anthropic
Google Gemini
Slack
Google Calendar
Zoom
Google Meet
VS Code
Cursor

Start free. Scale when you're ready.

Every plan includes the core interview experience. Upgrade for more interviews, integrations, and AI model flexibility.

Tiny Team

$0 forever

Try Hyrin with your team

  • 2 interviews per month
  • Manage candidates
  • Question & challenge library
  • Live session monitoring
  • Basic post-interview analysis
  • Up to 2 team members

BYOK

$10 /mo per workspace

You manage your own token expenses

  • Unlimited interviews
  • Use any AI model with your keys
  • Candidate resume analysis
  • Slack integration
  • Full challenge library
  • Full analytics
  • Unlimited team members
  • Email reminders

Scaling Up

$25 /mo per workspace

Everything in BYOK, we manage your tokens

  • 21 interviews per month
  • All AI models included
  • Token expenses managed by Hyrin
  • Meeting bot included
  • Google Calendar sync
  • 5 meeting transcriptions
  • Unified transcript analysis
Coming Soon

Max

$99 /mo per workspace

For high-volume hiring

  • 49 interviews per month
  • All Pro features
  • Priority access to hyrin-code and hyrin-conversation models
  • Access to Hyrin candidate database
  • Unlimited team members
  • Dedicated support
  • SSO & advanced security
Coming Soon

Frequently asked questions

When a candidate asks the AI for help during an interview, Hyrin routes the request to the Hyrin Code Model based on frontier model plans to pose a subtle challenge — like an N+1 query, a misleading variable name, or a broken test case. The candidate receives what looks like normal AI-generated code, but it contains a deliberate issue. This lets you evaluate whether the candidate can critically review AI output, which is the most important engineering skill in the age of AI-assisted development.
No. The challenges are invisible to the candidate. They interact with what appears to be a standard AI coding assistant. The interviewer, however, can see exactly when a challenge was injected, what the expected resolution is, and how the candidate responds to it.
Candidates receive a 6-character pairing code from the interviewer. They enter it into the Hyrin CLI tool or IDE plugin (VS Code, Cursor), which connects them to the live session. They then code in their own local environment while using Hyrin as their AI coding assistant. No browser-based editors or sandboxes required.
Hyrin supports OpenAI (GPT-4 and newer), Anthropic (Claude), Google Gemini, and additional providers. On the Tiny Team plan, one model is included. The BYOK plan lets you use any model with your own API keys. Scaling Up and Max plans include access to all supported models using Hyrin's infrastructure.
Yes. Hyrin ships with a comprehensive library of challenge templates across six categories: Database, Naming, Debugging, Logic, Security, and Performance. You can also create fully custom challenge templates scoped to your workspace, allowing you to test for domain-specific patterns relevant to your codebase and tech stack.
After a session ends, Hyrin's AI analyzes all session data: every prompt the candidate sent, every AI response (including challenge-injected ones), and optionally the verbal transcript from the video call. It produces a report covering code quality, challenge detection and resolution, coding patterns, and a timestamp-correlated view of what the candidate discussed vs. what they implemented.
No, Hyrin complements your existing video interview setup. You continue to meet candidates over Zoom or Google Meet as usual. Hyrin adds a live coding layer where the candidate uses AI assistance through our tools while you observe and evaluate. The video transcript and coding activity are then analyzed together for a unified view.
Most teams are running their first interview within minutes. Sign up with Google, follow the guided onboarding wizard to create a role, pick questions from our library, configure your challenge templates, and you're ready. Invite team members and set up integrations as you go.

Stop guessing.
Start evaluating.

Join the engineering teams using Hyrin to hire developers who can actually ship with AI. Get started in minutes, no credit card required.

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