Hamming for Startups · YC S24
Connect your agent from Retell, VAPI, LiveKit, ElevenLabs, Pipecat, or Bland. Auto-generate test scenarios. Run hundreds of tests in parallel. See what breaks, all in under 10 minutes.
Pioneered voice AI testing. Direct Slack channel with founders. YC companies get a special deal.
Hamming works with
Quick call to get started. No implementation projects. No waiting.
Add your API key from Retell, VAPI, LiveKit, ElevenLabs, or Bland. Your agents sync automatically. Using Pipecat? Connect directly via Daily.co WebRTC.
Paste your agent's system prompt. We analyze it and automatically generate hundreds of diverse test scenarios: happy paths, edge cases, accents, interruptions, background noise, adversarial inputs. No manual test case writing required.
Execute hundreds of tests simultaneously with simulated accents, background noise, and interruptions. See results in minutes, not hours.
Our evaluators analyze audio directly, catching issues that transcript-only tools miss. Detect tone, hesitation, interruptions, and timing problems. Understand why your agent failed, not just that it did.
Building voice testing infrastructure sounds simple until you try. Telephony integration, realistic voice synthesis, LLM-based evaluation, concurrent call handling. Each is a project unto itself.
Most teams spend 3-6 months building a basic solution that still lacks accents, background noise, and reliable evaluation. And then there's maintenance: every model update, every platform change, every edge case.
Hamming gives you enterprise-grade testing in under 10 minutes. Run hundreds of scenarios with simulated callers, catch the bugs your team would never think to test for, and ship with confidence. Your engineers focus on what matters: building your product.
Testing isn't just for your engineering team. It's for your buyers. Enterprise customers evaluating voice AI solutions want proof that your agent actually works. They ask hard questions: How does it handle accents? What's the latency? Does it fail gracefully?
Hamming dashboards give you the answers. Share test results that show pass rates across hundreds of scenarios, latency metrics, accent coverage, and edge case handling. Turn "trust us" into "here's the data."
Startups using Hamming close deals faster because they can demonstrate reliability before the pilot, not promise to fix issues after.
Verify your agent handles the common cases correctly: booking, inquiries, transfers. Test before users encounter them.
Test interruptions, silence, fast speakers, elderly callers, background noise, and unexpected inputs.
Ensure your agent understands diverse accents: Indian, British, Southern US, Australian, and many more.
Catch when prompt changes break existing functionality. Run your test suite on every PR.
Verify your agent calls the right tools with the right parameters and handles tool failures gracefully.
Track time-to-first-word, response times, and interruption handling across all your test runs.
Voice AI startups ship faster and close deals sooner with Hamming.
“Hamming had the lowest friction from 'we should test this' to running actual tests. New engineers onboard quickly and the workflow matches how our team already works.”
Simran Khara
Co-founder, NextDimensionAI
99%
production reliability
40%
latency reduction
15 min
engineer onboarding
“Hamming gives us incredible peace of mind. We can confidently test and monitor all of Grace's phone calls for patient safety and quality of care.”
Sohit Gatiganti
Co-Founder & CPO, Grove AI
97%
patient satisfaction
165K+
calls analyzed
24/7
quality monitoring
YC alumni get 50% off our Growth plan for the first 6 months, plus:
Current batch companies get 75% off for the first 6 months, plus fundraising workshops.
Email sumanyu@hamming.ai with the title "YC Deal" after creating an account on app.hamming.ai.
Just a quick call to set up your account, then you're off and running. We'll get you set up, answer any questions, and you can run your first test in under 10 minutes.
Import your agent from Retell, VAPI, LiveKit, Pipecat, or Bland using your API key. We auto-generate test scenarios from your agent's prompt.
under 10 minutes. Connect your voice platform with an API key, select an agent, and we auto-generate test scenarios. Click "Run" and watch your agent handle dozens of simulated calls in parallel.
Most teams discover their first bugs within the first hour of using Hamming—issues they'd never catch with manual testing.
Hamming works with any SIP-capable voice agent. If you're not using Retell, VAPI, LiveKit, or Bland, you can connect via SIP trunk or direct WebRTC. We also support custom integrations via our API.
Building on Pipecat? We integrate directly with Pipecat agents via Daily.co WebRTC—no phone number required.
You could—and many teams try. But building voice testing infrastructure means: managing telephony, creating realistic voice personas, building LLM-based evaluation, handling concurrent calls, and maintaining it all.
Most teams spend 3-6 months building a basic solution that still lacks accents, background noise, and reliable evaluation. Hamming gives you all of this in under 10 minutes—so you can focus on shipping your agent.
Manual QA catches maybe 10-20 scenarios before you ship. Hamming runs hundreds of scenarios in parallel with different accents, speaking styles, and edge cases—in the time it takes to make one manual call.
More importantly, Hamming catches the weird edge cases humans forget to test: interruptions, background noise, elderly callers, fast speakers, and adversarial inputs.
