Relyable
Relyable · Voice & Language · Coding
Relyable is a testing and monitoring platform for AI voice agents. It generates simulated calls, grades each conversation against your own rubric, and logs live calls with real-time alerts.
About Relyable
What Is Relyable
Relyable is a quality-assurance tool built specifically for AI voice agents. AI voice agent testing is its core job: it connects to the agent you already run on Vapi, Retell, or ElevenLabs, spins up hundreds of simulated phone conversations, and scores how well the agent handled each one. It also covers voice agent monitoring for live production traffic.
The problem it targets is familiar to anyone who has shipped a voice agent: manual call testing doesn't scale, and the failures that matter usually show up in production, in front of real customers. Relyable leans on automated testing and around-the-clock monitoring so teams catch a broken response before it reaches a paying caller.
Two limits are worth knowing up front. It assesses voice agents only, so text chatbots and other AI products are out of scope. And the company currently states it isn't accepting new sign-ups, so access runs through a waiting list or a direct conversation rather than self-service checkout.
Getting Started
- Connect your voice agent by pasting the API key and agent ID from Vapi, Retell, or ElevenLabs. Custom agents on other platforms get a phone number to route calls through.
- Generate test cases from your system prompt, or write your own against specific business goals.
- Pick a persona for each test, choosing from more than 200 presets that differ by age, mood, accent, and goal.
- Run the tests in parallel and read the scored results against your rubric.
- Turn on live monitoring so production calls get logged and alerts fire when something drifts.
Product Information
A quick look at Relyable's pricing, supported platforms, and performance.
Best for
The users, tasks, and scenarios where this tool fits best.
Users
- AI agencies that build voice agents for clients
- Voice agent startups
- Enterprise support teams running voice at scale
Tasks
- Automated call testing and AI voice agent evaluation
- Rubric-based evaluation
- Live call monitoring
Scenarios
- Pre-launch stress testing
- Regulating a fast-moving agent
- Dropping manual call audits
Key features
Native integrations with major voice platforms
Relyable connects to Vapi, Retell, and ElevenLabs through an API key and agent ID, which the company says takes under five minutes. Agents built on other platforms can still be tested by uploading the prompt and routing calls through a Relyable number.
AI-generated test cases and personas
Test cases can be generated automatically from a system prompt or written by hand against business goals. Personas number more than 200 presets, spanning traits like age, mood, accent, and intent, so simulated callers reflect a realistic spread of behaviors.
Parallel test runs at scale
The platform runs test conversations in parallel rather than one at a time. That's what lets a team push an agent through hundreds or thousands of scenarios in a single pass, far beyond what manual spot-checking covers.
Custom rubric evaluation
Every call is graded against a rubric the user defines. Built-in metrics cover latency, sentiment, and customer satisfaction, and teams can weight each criterion so scores reflect what actually matters for their business.
Live call monitoring with alerts
In production, Relyable logs and analyses each call silently. When a metric crosses a threshold, an alert goes out to Slack, email, PagerDuty, Opsgenie, Linear, or a webhook, so problems surface without a human listening to every call.
End-of-call webhook redirection
For connected platforms, Relyable can redirect end-of-call webhooks, which slots monitoring into an existing workflow instead of requiring a parallel setup.
Pros and cons
Pros
- Purpose-built for voice agents, covering testing, evaluation, and monitoring in one place rather than stitching together generic tools.
- Native Vapi and Retell integrations (plus ElevenLabs) make setup quick for teams already on those platforms.
- Rubric-based scoring lets teams grade against their own standards instead of a fixed checklist.
- Live monitoring with alert routing replaces routine manual call audits and catches drift as it happens.
Cons
- No free plan, and the entry price starts at $500 per month, which rules out hobby projects and solo experimentation.
- New sign-ups are currently closed, so getting access means joining a waitlist or contacting the team directly.
- Scope is limited to voice agents, so text-based chatbots and other AI products can't be tested here.
- For agents on platforms outside the native three, setup depends on the API path and manual prompt upload, which is more work.
Frequently asked questions
Relyable tests and monitors AI voice agents. It generates simulated phone conversations, scores each one against a custom rubric, and tracks live calls so problems get flagged before they spread.
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