Sandeep PandaUpdated Jun 10, 2026QA for voice agents in production.
Every prompt change risks breaking conversation flows your customers depend on. Bug0's AI agents and forward-deployed engineers catch what breaks before your customers hear it.
Voice agents are shipping faster than ever. Testing them is still manual, slow, and incomplete. We fix that.
200+ engineering teams trust Bug0 to test voice and conversational flows in production.
Featured in Google AI Studio's developer showcase
You ship the update.
We test every conversation it touches.
Prompt changes · Model swaps · API updates · New integrations
The problem
Voice agents break silently.
Every time you ship.
One change. Thirty broken flows. Your customers hear it before you do.
What slips through every time
Prompt changes break working flows.
Accents cause cascading failures.
Latency spikes derail conversations.
Interruptions freeze the agent.
Tool calls fail silently.
Compliance checks get skipped.
Agent mangles names and emails.
Awkward silences with no recovery.
Caller: Hi, I'm calling about my order.
Agent: Happy to help. Can I get your name?
Caller: Priya Sharma.
Agent: Thanks, Brian Sharman. Pulling up your account now.
✗ entity capture failed · name mismatch after prompt v2.4
What engineering leaders say.
“Bug0 is the AI QA platform behind Prospyr, the practice management software for aesthetics clinics. It tests our web app continuously and points us to exactly where the app broke when something fails. We catch issues early instead of in production, which keeps a HIPAA-compliant product stable.”
“Bug0 is the closest thing to plug-and-play QA testing at scale. It's helped us catch multiple bugs before they made it to prod.”
“We build healthcare compliance software, so accuracy and reliability are non-negotiable. Bug0 provided us with an AI-based QA layer without adding headcount or another tool for my team to learn and manage. The tests run against all of our QA instances on a regular basis, providing us with a level of coverage and confidence that previously required many resources. We can focus our team on new development and real issues, and that's the part I care most about.”
“We plugged Bug0 into our CI and had our critical flows covered within a week. Like having a proactive QA engineer reviewing every deploy.”
“Bug0 is the AI QA platform behind Ferra, AI estimating software for steel construction. AI-based testing and execution with a forward deployed engineer who verifies every result, so we catch real bugs before production instead of chasing false positives. We see exactly where things broke, and we ship with confidence.”
“Bug0 gives us the speed of AI-native automation with the accuracy of human QA. We stopped worrying about flaky tests entirely.”
“We'd been putting off test coverage for months. Bug0 had our critical flows covered in under a week. No scripts, no maintenance burden.”
“We used to skip regression tests before releases because they took too long to maintain. Bug0 runs them on every PR now. We haven't shipped a regression in three months.”
How it works
From your first commit to your last deploy.
- ✓Refund request flow14 turns
- ✓Subscription change9 turns
- ✓Order status lookup6 turns
- ✗Escalation to human agentfailed at turn 6
- ✓Compliance disclosure11 turns
Failure verified by your FDE · transcript and audio attached
- 01
We learn your agent.
Share your agent's config, system prompt, and critical conversation flows. Our FDEs map every path your customers take.
- 02
Your FDE generates the regression suite.
Hundreds of test scenarios built on Bug0's AI engine and tailored to your flows. Personas, accents, noise, interruptions, tool call variations, edge cases you'd never think to test manually.
- 03
Tests run on every change.
Every prompt update, model swap, or integration change triggers your full regression suite automatically. No manual effort.
- 04
FDEs triage and report.
Our forward-deployed engineers review failures, separate real bugs from noise, and deliver reports with audio recordings, logs, and the exact point of failure. You fix. You ship.
AI agents and human engineers work every run. No failure reaches you without an engineer confirming it's real.
Every report includes the audio recording, turn-by-turn latency breakdown, tool call pass/fail, and the exact point in the call where things went wrong.
Platforms
Built for teams on
any voice platform.
If your agent handles real calls, we can test it.
Vapi
Retell
LiveKit
Twilio
Bland.ai
ElevenLabs
Custom / in-house
Part of Bug0 Managed
Same service. Same flat price.
Voice agent testing runs on the same managed QA service: a dedicated forward-deployed engineer, from $2,500/mo flat. Discounted 60-day pilot, month-to-month.
One flat subscription.
Voice flows count toward your plan like any other user flow. No per-test, per-minute, or per-hour billing.
Onboarding handled end-to-end.
We handle setup end-to-end. From flow mapping to your first full regression run in days, not weeks.
Full coverage from day one.
Every conversation flow, every edge case, every deploy. Backed by AI agents and your forward-deployed engineer.