Teams at trail-blazing startups to Fortune 500 companies deploy voice agents on the QuantumRealm platform.
The most configurable API to build leading voice AI products and scale phone operations.
Making voice AI simple
and accessible.
Feels human.
Moves the needle.
powers 400,000+ daily calls.
saves 100s
of engineering hours monthly.
"A key technical requirement was the ability to bring our own stack — QuantumRealm's developer-friendly API-first approach made this possible."
Quang Tran
CTO, FleetWorks
Integrate with more
than 40+ apps in a snap.
Try in minutes.
Deploy in days.
Choose your workflow.
Pick from 1000s of pre-made templates, or build one yourself.
Plug it in.
Whether it's in your telephony, website, or in your app, we have it covered.
Done.
Handle millions of calls and watch how they perform.
Flexible for engineers.
Easy for business users.
Multilingual
Talk to agents in English, Spanish, Mandarin, or one of 100+ other supported languages.
API-native
Everything is exposed as an API, with 1000s of configurations and integrations.
Automated testing
Design test suites of simulated voice agents to identify hallucination risks before going to production.
Bring your own models
Bring your own API keys for transcription, LLM, or text-to-speech models. Or, plug in your own self-hosted models.
Tool calling
Plug in your APIs as tools to intelligently fetch data and perform actions on your server.
A/B experiments
Test different variations of prompts, voices, and flows to continuously optimize performance.
Our custom real-time audio infrastructure operates with enterprise-grade reliability.
Get deployment assistance and a dedicated forward-deployed engineer to go live in a week.
Scale up and down to millions of calls in minutes with ultra-low latency interactions.
Built-in conversation guardrails prevent model hallucinations and ensure data integrity.
Enterprise-level security for even the most regulated healthcare and financial services.
250,000+ devs are already
here. Join the movement.
Brilliant minds. Bleeding-
edge tech. Relentless drive.
Join a team of the most cracked people to do rewarding work in an intensely ambitious environment.