Built by engineers who shipped voice AI for customer support — and got burned by it.
Every prompt tweak broke something we didn't test. RubricHQ is the test suite we wished we'd had.
Read our story →Works with
Vapi
Retell
LiveKit
Pipecat
ElevenLabs
OpenAIThe platform
One platform. Pre-launch to production.
Auto-generate scenarios, test at scale
AI writes hundreds of realistic test calls — then runs them as concurrent voice calls.
Every prompt change is a regression you haven't found yet.
Voice agents don't fail loudly. A new model, a reworded instruction, or a different TTS voice can pass your five manual test calls and still hallucinate a refund policy on call 312. You find out when a customer does.
Why teams pick RubricHQ over other voice AI testing tools
Test, fix, and re-test in one loop
Simulate calls, score them, rewrite the prompt, and re-run the same suite — then score live calls on the same metrics.
Fixes, not just failures
Optimize diagnoses why a call failed, rewrites the prompt, proves the fix against your suite, and pushes it back to Vapi or Retell.
Priced so you can actually start
Free, no card, public pricing. No "contact sales" wall before your first test.
Compare: vs Hamming · vs Coval · vs Cekura · vs Roark · vs Maxim AI
Your first test run in minutes
STEP 01
Connect your agent
Add your agent's phone number, plus a Vapi or Retell key to sync its prompt, or a LiveKit or Pipecat endpoint for web calls.
STEP 02
Generate scenarios
We read your prompt and write happy paths, edge cases, and red-team calls, played by angry, confused, and adversarial personas.
STEP 03
Run and gate
Run a batch now, schedule it nightly, or block deploys in CI with our GitHub Action.
No credit card