6 Voice AI tools (all free)
6 Voice AI resources, picked out of 4 saved Instagram reels and 2 liked tweets, from creators like @haroonkhaans, @prestonrhodes, @girsta. 6 of them are free, freemium or open source.
ElevenLabs Conversational AI lets users build natural-sounding, low-latency voice agents for inbound and outbound calling. It integrates customizable system prompts, voice models, and knowledge bases to handle customer service and appointments without code.
LiveKit Agents is an open-source framework designed to build programmable, server-side voice and multimodal AI participants. It coordinates real-time audio transport with plug-and-play speech-to-text, LLM, and text-to-speech providers alongside voice activity detection. It solves the hard parts of conversational AI, including low latency, interruption handling, and room-level media routing.
Miso-TTS is an open-source 8B parameter speech synthesis foundation model developed by Miso Labs. It generates expressive, human-like voice with a fast 110ms response latency and supports one-shot voice cloning. The model can be run locally on-premises or accessed via an API, allowing developers to build real-time voice agents without third-party data exposure.
This recipe pairs LiveKit's VoicePipelineAgent with Groq-hosted Whisper and Llama 3.3-70B, using self-hosted Kokoro TTS for speech generation. It provides a drop-in, significantly cheaper alternative to commercial voice APIs like ElevenLabs while maintaining low latency.
OpenHome is an operating system and voice SDK for creating conversational AI agents on the web and hardware devices. It lets users configure custom agent personalities, clone voices, choose underlying LLMs like GPT-4o, and tune real-time conversation dynamics like auto-interruption. Developers can also deploy agents to local Linux hardware, dev kits, and smart home appliances.
Synthflow is a voice AI platform that lets businesses create and deploy custom telephone agents for inbound and outbound calls. It features a visual flow designer, native telephony integration with low latency, and a marketplace for licensing pre-built agent templates.