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I need to build a voice agent

Speech-to-text, text-to-speech and real-time frameworks for agents you talk to.

19 tools · 6 official

Picked from listings that mention voice agent, voice ai, text-to-speech, speech-to-text or realtime voice in their name, description, tags or skills; those in Voice & Messaging, or with API access, rank higher.

Best fits · 12

  1. Deepgram

    API · CLI

    Speech-to-text and voice AI API with real-time streaming transcription, speaker diarization, and text-to-speech for…

    VerifiedOfficialby Deepgram · Voice & Messaging · API Key

  2. Cartesia

    API

    Delivers ultra-low-latency text-to-speech and speech-to-text through the Sonic model family, with a voice-agent…

    Verifiedby Cartesia · Voice & Messaging · 3 skills · API Key

    Why Speech Synthesis: Generates natural speech from text with latency low enough for real-time conversational voice agents.

  3. LiveKit Agents

    API · CLI

    Builds production realtime voice and video AI agents with WebRTC transport, turn detection, and STT/LLM/TTS pipelines.…

    VerifiedOfficialby LiveKit · Voice & Messaging · 3 skills · API Key

    Why Realtime Voice Agents: Builds production voice and video agents that stream over WebRTC with low latency.

  4. Fish Audio

    API

    Generates speech, clones voices and transcribes audio through REST and WebSocket APIs backed by open-weight models, for…

    VerifiedNewby Fish Audio · Voice & Messaging, Content & Media · 5 skills · API Key

    Why Text to Speech: Converts text to speech with emotion tags and fine-grained pronunciation control, over REST or real-time WebSocket.

  5. TEN Framework

    API · CLI

    Builds realtime conversational voice AI agents with a low-latency, multimodal framework in C, Go, and Python. Handles…

    Verifiedby TEN · Voice & Messaging · 3 skills · API Key

    Why Realtime Voice: Builds low-latency conversational voice agents that stream audio in and out in real time.

  6. Vapi

    API

    Voice AI platform for building production phone agents. Handles real-time STT, TTS, turn-taking, and LLM orchestration.…

    Verifiedby Vapi · Voice & Messaging · 5 skills · API Key

    Why Build production voice agents for inbound and outbound phone calls with sub-500ms latency

  7. Voicebox

    MCP · API

    Runs a local voice studio for voice cloning, text-to-speech and Whisper dictation, and lets agents speak or transcribe…

    VerifiedNewby Jamie Pine · Voice & Messaging · 4 skills · No auth

    Why Agent Voice Output: Lets any MCP-aware agent speak in a cloned voice via the voicebox_speak tool or POST /speak, with a per-agent voice binding.

  8. Sarvam AI API

    API · MCP

    Transcribes, synthesizes, translates, and chats in Indian languages and English with Sarvam's Saaras, Bulbul, Mayura…

    VerifiedOfficialNewby Sarvam AI · Language & Translation, Voice & Messaging · 5 skills · API Key

    Why Saaras v3 Speech-to-Text: Transcribes, translates, and captions code-mixed and regional Indian speech in real time or in batch.

  9. Speko

    API

    Unified routing API for voice models across providers, giving voice agents one interface for speech-to-text…

    Verifiedby Speko · Voice & Messaging, Infrastructure & Ops · API Key

  10. Pipecat

    API

    Builds realtime voice and multimodal conversational agents in Python — orchestrates STT, LLM, and TTS pipelines with…

    Verifiedby Daily · Voice & Messaging · 3 skills · API Key

    Why Voice Pipeline Orchestration: Chains STT, LLM, and TTS services into a realtime voice pipeline for conversational agents.

  11. Dograh

    API · MCP

    Builds and self-hosts voice AI agents with a visual workflow builder, telephony, and bring-your-own-key…

    Verifiedby Dograh HQ · Voice & Messaging, Orchestration · 3 skills · API Key

  12. Retell AI

    API

    Builds, tests, deploys, and monitors natural-sounding AI voice agents with ~600ms latency for scheduling, support, and…

    Verifiedby Retell AI · Voice & Messaging · API Key
See all 19 on Browse, with filters

Official · 6

The ones published by the company behind the product.

In stacks

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/tasks/build-a-voice-agent
I need to build a voice agent · 19 fit · 6 official · keywords: voice agent, voice ai, text-to-speech, speech-to-text, realtime voice · categories: voice-messaging · access: api
Speech-to-text, text-to-speech and real-time frameworks for agents you talk to.
best fits
deepgramapi+cliSpeech-to-text and voice AI API with real-time streaming transcription, speaker diarization, and text-to-speech for voice agents.cartesiaapiSpeech Synthesis: Generates natural speech from text with latency low enough for real-time conversational voice agents.livekit-agentsapi+cliRealtime Voice Agents: Builds production voice and video agents that stream over WebRTC with low latency.fish-audioapiText to Speech: Converts text to speech with emotion tags and fine-grained pronunciation control, over REST or real-time WebSocket.ten-frameworkapi+cliRealtime Voice: Builds low-latency conversational voice agents that stream audio in and out in real time.vapiapiBuild production voice agents for inbound and outbound phone calls with sub-500ms latencyvoiceboxmcp+apiAgent Voice Output: Lets any MCP-aware agent speak in a cloned voice via the voicebox_speak tool or POST /speak, with a per-agent voice binding.sarvam-aiapi+mcpSaaras v3 Speech-to-Text: Transcribes, translates, and captions code-mixed and regional Indian speech in real time or in batch.spekoapiUnified routing API for voice models across providers, giving voice agents one interface for speech-to-text, text-to-speech, and fallback. Y Combinator S26.pipecatapiVoice Pipeline Orchestration: Chains STT, LLM, and TTS services into a realtime voice pipeline for conversational agents.dograhapi+mcpBuilds and self-hosts voice AI agents with a visual workflow builder, telephony, and bring-your-own-key speech-to-speech or LLM, STT, and TTS pipelines.retell-aiapiBuilds, tests, deploys, and monitors natural-sounding AI voice agents with ~600ms latency for scheduling, support, and administrative phone workflows.
official
deepgram, livekit-agents, sarvam-ai, meta-model-api, minimax-api, minimax-mcp
related tasks
/tasks/transcribe-audio12 fittranscribe audio/tasks/make-phone-calls8 fitmake and answer phone calls/tasks/make-videos10 fitmake videos
in stacks
/stacks/realtime-voice-agentlivekit-agents+deepgram+cartesiaA realtime voice agent
more
/browse?task=build-a-voice-agentall 19, with filters/tasksevery task/api/tasks/build-a-voice-agentthis task as JSONGET · no auth