Tunk.ai 每月有 0 次造訪，月增率 -100%，定價模式為免費試用、需聯絡報價。Vapi 每月有 662,301 次造訪，成長率 -11.4%，定價模式為免費增值。
面向生產級通話自動化的語音 AI 代理與即時語音轉文字
用自然語言描述代理，平台即自動設定語音、提示詞、知識與通話流程；接著測試、微調並部署到電話線、應用或 API。
串流轉寫在對方仍在說話時即回傳文字，透過 API 或內建 playground 支援數十種語言與口音。
把自有介面交給代理，使其能在通話中預約、查詢和更新紀錄，並把結果寫回 Salesforce、HubSpot 或 Zoho。
接入 Twilio 或 Plivo，將活動指向聯絡人名單，讓代理處理每一通電話，你只需管理佇列。
透過 API 打造、測試並部署正式環境的語音 AI 代理
用一個 API 設定語音辨識、大型語言模型推理層與語音合成，不必分別串接多家供應商。
平台處理即時音訊串流、插話處理與通話狀態，讓對話自然且反應迅速。
可申請 Vapi 號碼，也能串接 Twilio、Vonage 或 Telnyx，同一個代理支援來電與去電。
上線前模擬通話，上線後追蹤每通電話的逐字稿、成效指標與合規訊號。
專項更強Provides raw frontier language models and real-time multimodal capabilities, requiring custom scaffolding compared to Vapi's voice workflows.
專項更強Offers developer access to Gemini's powerful multimodal APIs, but lacks out-of-the-box telephony voice agent pipelines.
專項更強Offers developer access to Gemini's powerful multimodal APIs, but lacks out-of-the-box telephony voice agent pipelines.
專項更強Provides enterprise-grade speech-to-text and audio intelligence APIs, but lacks turnkey conversational voice agent telephony orchestration.
專項更強Provides enterprise-grade speech-to-text and audio intelligence APIs, but lacks turnkey conversational voice agent telephony orchestration.
Soniox is a speech AI platform offering real-time speech-to-text, expressive text-to-speech with voice cloning, and real-time speech translation in 60+ languages through one unified API, built for voice agents, wearables, dictation, and live captions.
Enterprise voice AI platform specializing in high-volume outbound and inbound phone calls with robust telephony integrations.
VideoSDK is a developer platform for embedding real-time audio and video calling, interactive live streaming, and AI voice agents into web and mobile apps. It ships cross-platform client SDKs (JavaScript, React, React Native, Flutter, iOS, Android) plus server-side helpers, telephony over SIP, and transcription services, all billed on pay-as-you-go participant-minute pricing with a global edge network.
VideoSDK is a developer platform for embedding real-time audio and video calling, interactive live streaming, and AI voice agents into web and mobile apps. It ships cross-platform client SDKs (JavaScript, React, React Native, Flutter, iOS, Android) plus server-side helpers, telephony over SIP, and transcription services, all billed on pay-as-you-go participant-minute pricing with a global edge network.
