The fastest path to a working Voice Agent, built on the most accurate Voice AI in the market. Stream audio in, get audio back. We handle the rest. ~1s latency. Best-in-class accuracy on the stuff that matters (numbers, emails, names). Tool calling that doesn't go silent. Mid-call prompt + voice + tool updates. $4.50/hr flat. No per-token. No concurrency caps. Most devs ship a working agent the same day.
A voice agent API that's not first to market, knows it isn't, and made the case for itself anyway by being measurably better on the things that decide whether a voice agent actually works (accuracy on numbers/names, interruption handling, tool calls that don't go silent).
Talk to the live demo. Read the comparison table. Then come back here with questions for the maker!
@dan_ince this is great, I’ve been using it in InterviewFlowAI, and like other Assembly products, this one is among the best.
Maker here!
I built the voice agent API to fix a critical issue in agent conversations. The layer most people treat as a commodity input, speech recognition, is actually where voice agents live or die. If your agent confidently mishears a 16-digit order number, the conversation is already over. Nothing the LLM does next can save it.
So we own the whole stack end-to-end. Universal-3 Pro Streaming (16.7% missed error rate on alphanumerics vs 23.3% on gpt-realtime, 25.5% on Nova-3), speech-aware VAD that doesn't cut people off mid-thought, tool calls that stay conversational instead of going silent, mid-call config updates, and a 30s reconnect window because real production traffic drops.
Flat $4.50/hr. No per-token. No concurrency caps.
Talk to the live agent on the page. that's the actual API, not a sandbox. Then break it and tell me where it's bad. I'd love to know what you think!
About Voice Agent API on Product Hunt
“One API to build production-ready voice agents”
Voice Agent API launched on Product Hunt on April 30th, 2026 and earned 85 upvotes and 3 comments, placing #21 on the daily leaderboard. The fastest path to a working Voice Agent, built on the most accurate Voice AI in the market. Stream audio in, get audio back. We handle the rest. ~1s latency. Best-in-class accuracy on the stuff that matters (numbers, emails, names). Tool calling that doesn't go silent. Mid-call prompt + voice + tool updates. $4.50/hr flat. No per-token. No concurrency caps. Most devs ship a working agent the same day.
Voice Agent API was featured in API (98.1k followers), Artificial Intelligence (467.7k followers) and Audio (2k followers) on Product Hunt. Together, these topics include over 104.2k products, making this a competitive space to launch in.
Who hunted Voice Agent API?
Voice Agent API was hunted by Meredith Rauch. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
Want to see how Voice Agent API stacked up against nearby launches in real time? Check out the live launch dashboard for upvote speed charts, proximity comparisons, and more analytics.
Meredith Rauch