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.srch-app { display: none !important; }Search Category Pricing Sort Clear filtersBest match first, then newest. How we rank →5 results

sipgate flow

EU-hosted real-time voice and telephony API that puts your own AI agent on the phone.

On quote

From: On quote

API access: Yes
Free tier: No
MCP server: Not stated
Own API key: Partly
Open source: Partly
Self-hosted: Partly

Checked 26 September 2026

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Cartesia

Real-time speech models and a managed runtime for production phone and web voice agents.

Free, then $5/month

From: Free, then $5/month

API access: Yes
Free tier: Yes
MCP server: Yes
Own API key: Partly
Open source: Partly
Self-hosted: Partly

Checked 2 September 2026

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Deepgram Voice Agent API

One WebSocket API that runs speech-to-text, LLM orchestration and text-to-speech for real-time voice agents.

From $0.05/minute

From: $0.05/minute

API access: Yes
Free tier: Partly
MCP server: Partly
Own API key: Yes
Open source: Partly
Self-hosted: Partly

Checked 2 September 2026

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OpenAI Realtime API

Speech-to-speech API for voice agents, with tools, MCP and WebRTC or WebSocket transport.

From $10/1m audio input tokens

From: $10/1m audio input tokens

API access: Yes
Free tier: No
MCP server: Partly
Own API key: Partly
Open source: Partly
Self-hosted: No

Checked 23 October 2026

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LiveKit Agents

Open-source Python and Node.js framework for voice AI agents, with LiveKit Cloud hosting, telephony and observability.

Free, then $50/month

From: Free, then $50/month

API access: Yes
Free tier: Yes
MCP server: Partly
Own API key: Partly
Open source: Yes
Self-hosted: Yes

Checked 2 September 2026

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