2026 AI Voice Agent 全景对比:Vapi · Retell · LiveKit · Pipecat · OpenAI Realtime · Gemini Live 到底选哪个
TL;DR
- What this is: A 2026 deep-dive comparison of the AI voice agent market — the two managed platforms (Vapi, Retell), the two open-source orchestration frameworks (LiveKit Agents, Pipecat), and the two speech-to-speech models (OpenAI Realtime / GPT-Live-1, Gemini Live) — with concrete latency, pricing, and architecture data.
- This is for: Engineers and PMs building production voice agents (inbound/outbound call bots, IVR, customer support, sales dials, meeting assistants) who need to choose between “buy” and “build”.
- We chose: We ranked options on end-to-end latency budget and total cost at 10K / 100K minutes, because in 2026 the vendor headline latency numbers (500ms, sub-100ms) are misleading — the real question is what fits inside the 800ms “human-feeling” threshold, and at what volume the math flips from buy to build.
如果你的客服机器人、外呼脚本、电话 IVR 想接入 AI,2026 年最让人困惑的不是”能不能接”,而是**”这个赛道 6 个月换了 3 次名字”**——去年还叫”AI 语音机器人”,今年开始叫”Voice Agent”,产品页面上 Vapi、Retell、LiveKit、Pipecat、OpenAI Realtime、Gemini Live 一起冲上来,每个都宣称 <500ms 延迟,价格从 $0.05/分钟到 $0.31/分钟差 6 倍。
这篇文章把六条主流路线摊开对比,基于 2026 年 9 月官方定价页、GitHub 星标、第三方生产基准数据(Deepgram、Prodinit、Cekura 的 2,000 通电话样本),回答一个问题:**”如果明天你就要落地一个每天接 500 通电话的客服 AI,你选哪一条路?”**




