20 Chert alternatives
Chert: Developer platform for AI agents on Apple's own channels — programmable iMessage at scale, plus video agents that answer and place FaceTime calls in a few lines of code. 20 apps do similar work, most sharing Voice Agents, API and Developers, ranked by how much they have in common with Chert.
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A developer platform for voice agents that make and take phone calls, with sub-second turn latency.
Also: API, Developers, Telephony, Voice Agents
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Enterprise speech infrastructure — fast, accurate transcription, text to speech, and a full voice agent API.
Also: API, Developers, Voice Agents
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Voice AI that reads and expresses emotion — speech models trained on human vocal expression, not just phonemes.
Also: API, Developers, Voice Agents
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Ultra-low-latency speech models built for real-time voice agents, where every millisecond is audible.
Also: API, Developers, Voice Agents
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MeetStream AI
One API for meeting bots across Zoom, Google Meet, Teams and Webex — join, record, stream and speak in real time, billed at $0.35 an hour.
Also: API, Developers, Voice Agents
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Open-source voice AI platform you can self-host — a visual workflow builder, bring-your-own STT/LLM/TTS models, telephony, and no per-minute platform lock-in.
Also: Telephony, Voice Agents
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Autophonix, LLC
AI voice agents for inbound and outbound phone calls, priced from 2¢ per minute, with 40+ languages, native SIP trunking and HIPAA/GDPR compliance.
Also: Telephony, Voice Agents
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Interface, Inc.
AI receptionist and second work number for local service businesses — answers calls 24/7, transcribes everything, and turns each conversation into summaries and next steps.
Also: Telephony, Voice Agents
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Bland AI
Enterprise phone agents on self-hosted models, tuned for human-sounding delivery at very large call volumes.
Also: Telephony, Voice Agents
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Build, test, and monitor production phone agents — with the testing and analytics that call centres actually require.
Also: Telephony, Voice Agents
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Voice and text AI agents that run multi-week outbound calling campaigns for home-service businesses.
Also: Telephony, Voice Agents
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Estera AI LLC
AI receptionist that answers every call and WhatsApp message for local service businesses, 24/7.
Also: Telephony, Voice Agents
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Build, test and ship customer-facing AI agents on a visual canvas, with evaluation runs and per-step logs rather than vibes.
Also: Chatbot, Voice Agents
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AI concierge agents for support at scale, with a supervision layer that turns transcripts into improvements.
Also: Chatbot, Voice Agents
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Low-latency speech APIs from the team behind the open-source Dia model — text-to-speech and transcription priced well below the incumbents.
Also: API, Voice Agents
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A router for voice models: 56 speech and language models benchmarked across 10 languages, with each session sent to the one that actually wins.
Also: API, Voice Agents
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AgentCall
Free, fully on-device voice loop for AI coding agents — talk to Claude Code, Cursor or Codex and hear them answer back out loud.
Also: Developers, Voice Agents
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Tatva Labs Inc.
Continuous automated QA for voice and chat AI agents, from pre-launch simulation to live call monitoring.
Also: Developers, Voice Agents
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Quora
Quora's chat app for using many AI models in one place, from GPT and Claude to image, video and voice models, plus custom bots.
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Speech-to-text APIs with built-in understanding — transcription plus summaries, topics, and redaction in one call.
Also: API, Developers