Workflow builder for realtime voice agents
Hi HN - we’ve been working on a new UX for building realtime voice agents with minimal code. We’ve built a ton of voice agents in the past few years. We noticed that voice agent dev follows a pretty typical pattern: ⁃ Start with a “single prompt” version that dumps all relevant context and instructions into a one prompt, and provide access to all necessary tools the agent will ever need ⁃ As the agent gets more complex and users discover more edge cases, break the single-prompt version out into a more complex structure that gives a user more control over the precise conversational flow.…
Workflow builder for realtime voice agents launched on June 18, 2025 with 12 votes, #1,876 of 7,999 launches that month and more than 75% of that year's launches.
In plain words
A platform for building realtime voice agents with minimal code, VoiceKit streamlines the development process from simple single-prompt versions to complex conversational systems. Designed for developers creating phone-based AI agents, it provides a full-featured interface for making and receiving calls with LLM-powered interactions. The tool addresses the typical evolution of voice agent development, allowing users to start simple and add sophisticated control over conversational flow as complexity increases.
written from the facts on this page · September 2026
From the sources
In the maker’s words, at launch
Hi HN - we’ve been working on a new UX for building realtime voice agents with minimal code. We’ve built a ton of voice agents in the past few years. We noticed that voice agent dev follows a pretty typical pattern: ⁃ Start with a “single prompt” version that dumps all relevant context and instructions into a one…
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Voicebun2025 · voicebun.com · ▲189Hey HN, I built Voicebun as a pet project because I was frustrated with how locked-down and rigid voice agents still are—many tools are either closed platforms, lack deep customization, or charge a lot just to test ideas. I wanted a way to quickly spin up AI voice agents that I could fully control—from the voice itself to the logic behind every word. Voicebun is an open-source voice agent builder. You can: - Clone voices and generate audio using your own scripts and prompts - Dynamically change prompts based on user input - Add custom logic through functions and webhooks (e.g. hit an API,…


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