# Conversational voice agents compared head to head (slim) > 91 head-to-head comparisons of conversational voice-agent APIs for AI agents, grouped by the job each pair shares, with benchmark scores for both sides. - Full: https://www.anchorterminal.com/compare/voice-agents/index.md (~3,600 tokens) · this version ~3,530 tokens · JSON https://www.anchorterminal.com/compare/voice-agents/index.json · canonical https://www.anchorterminal.com/compare/voice-agents/ - Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-09 - Ranked table: https://www.anchorterminal.com/categories/voice-agents.md - Shortlist and picks by need: https://www.anchorterminal.com/best/voice-agents/index.md ## Ranked 1. [ElevenLabs Agents API + MCP](https://www.anchorterminal.com/tools/elevenlabs-agents.md) BB 71.3 2. [Retell AI API + MCP](https://www.anchorterminal.com/tools/retell-ai.md) B 69.1 3. [Deepgram Voice Agent API](https://www.anchorterminal.com/tools/deepgram-voice-agent.md) B 68.1 4. [AssemblyAI Voice Agent API](https://www.anchorterminal.com/tools/assemblyai-voice-agent.md) B 64.4 5. [Bland AI API + MCP](https://www.anchorterminal.com/tools/bland-ai.md) B 63.8 6. [Vapi API + MCP](https://www.anchorterminal.com/tools/vapi.md) B 63.5 7. [OpenAI Realtime API](https://www.anchorterminal.com/tools/openai-realtime.md) B 63.3 8. [Ultravox Realtime API](https://www.anchorterminal.com/tools/ultravox.md) C 58.5 9. [Gemini Live API](https://www.anchorterminal.com/tools/gemini-live.md) C 57.1 10. [Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/tools/hume-evi.md) C 56.7 11. [Vocily AI](https://www.anchorterminal.com/tools/vocily.md) D 53.8 12. [Bolna API + MCP](https://www.anchorterminal.com/tools/bolna.md) D 52.6 13. [Synthflow API + MCP](https://www.anchorterminal.com/tools/synthflow.md) D 51.1 14. [Vogent API](https://www.anchorterminal.com/tools/vogent.md) D 47.1 ## Voice agents - [AssemblyAI Voice Agent API vs Bland AI API + MCP](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-bland-ai.md): B 64.4 vs B 63.8 - [AssemblyAI Voice Agent API vs Bolna API + MCP](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-bolna.md): B 64.4 vs D 52.6 - [AssemblyAI Voice Agent API vs Deepgram Voice Agent API](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-deepgram-voice-agent.md): B 64.4 vs B 68.1 - [AssemblyAI Voice Agent API vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-elevenlabs-agents.md): B 64.4 vs BB 71.3 - [AssemblyAI Voice Agent API vs Gemini Live API](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-gemini-live.md): B 64.4 vs C 57.1 - [AssemblyAI Voice Agent API vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-hume-evi.md): B 64.4 vs C 56.7 - [AssemblyAI Voice Agent API vs OpenAI Realtime API](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-openai-realtime.md): B 64.4 vs B 63.3 - [AssemblyAI Voice Agent API vs Retell AI API + MCP](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-retell-ai.md): B 64.4 vs B 69.1 - [AssemblyAI Voice Agent API vs Synthflow API + MCP](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-synthflow.md): B 64.4 vs D 51.1 - [AssemblyAI Voice Agent API vs Ultravox Realtime API](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-ultravox.md): B 64.4 vs C 58.5 - [AssemblyAI Voice Agent API vs Vapi API + MCP](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-vapi.md): B 64.4 vs B 63.5 - [AssemblyAI Voice Agent API vs Vocily AI](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-vocily.md): B 64.4 vs D 53.8 - [AssemblyAI Voice Agent API vs Vogent API](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-vogent.md): B 64.4 vs D 47.1 - [Bland AI API + MCP vs Bolna API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-bolna.md): B 63.8 vs D 52.6 - [Bland AI API + MCP vs Deepgram Voice Agent API](https://www.anchorterminal.com/compare/bland-ai-vs-deepgram-voice-agent.md): B 63.8 vs B 68.1 - [Bland AI API + MCP vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-elevenlabs-agents.md): B 63.8 vs BB 71.3 - [Bland AI API + MCP vs Gemini Live API](https://www.anchorterminal.com/compare/bland-ai-vs-gemini-live.md): B 63.8 vs C 57.1 - [Bland AI API + MCP vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/bland-ai-vs-hume-evi.md): B 63.8 vs C 56.7 - [Bland AI API + MCP vs OpenAI Realtime API](https://www.anchorterminal.com/compare/bland-ai-vs-openai-realtime.md): B 63.8 vs B 63.3 - [Bland AI API + MCP vs Retell AI API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-retell-ai.md): B 63.8 vs B 69.1 - [Bland AI API + MCP vs Synthflow API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-synthflow.md): B 63.8 vs D 51.1 - [Bland AI API + MCP vs Ultravox Realtime API](https://www.anchorterminal.com/compare/bland-ai-vs-ultravox.md): B 63.8 vs C 58.5 - [Bland AI API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/bland-ai-vs-vapi.md): B 63.8 vs B 63.5 - [Bland AI API + MCP vs Vocily AI](https://www.anchorterminal.com/compare/bland-ai-vs-vocily.md): B 63.8 vs D 53.8 - [Bland AI API + MCP vs Vogent API](https://www.anchorterminal.com/compare/bland-ai-vs-vogent.md): B 63.8 vs D 47.1 - [Bolna API + MCP vs Deepgram Voice Agent API](https://www.anchorterminal.com/compare/bolna-vs-deepgram-voice-agent.md): D 52.6 vs B 68.1 - [Bolna API + MCP vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/bolna-vs-elevenlabs-agents.md): D 52.6 vs BB 71.3 - [Bolna API + MCP vs Gemini Live API](https://www.anchorterminal.com/compare/bolna-vs-gemini-live.md): D 52.6 vs C 57.1 - [Bolna API + MCP vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/bolna-vs-hume-evi.md): D 52.6 vs C 56.7 - [Bolna API + MCP vs OpenAI Realtime API](https://www.anchorterminal.com/compare/bolna-vs-openai-realtime.md): D 52.6 vs B 63.3 - [Bolna API + MCP vs Retell AI API + MCP](https://www.anchorterminal.com/compare/bolna-vs-retell-ai.md): D 52.6 vs B 69.1 - [Bolna API + MCP vs Synthflow API + MCP](https://www.anchorterminal.com/compare/bolna-vs-synthflow.md): D 52.6 vs D 51.1 - [Bolna API + MCP vs Ultravox Realtime API](https://www.anchorterminal.com/compare/bolna-vs-ultravox.md): D 52.6 vs C 58.5 - [Bolna API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/bolna-vs-vapi.md): D 52.6 vs B 63.5 - [Bolna API + MCP vs Vocily AI](https://www.anchorterminal.com/compare/bolna-vs-vocily.md): D 52.6 vs D 53.8 - [Bolna API + MCP vs Vogent API](https://www.anchorterminal.com/compare/bolna-vs-vogent.md): D 52.6 vs D 47.1 - [Deepgram Voice Agent API vs ElevenLabs Agents API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-elevenlabs-agents.md): B 68.1 vs BB 71.3 - [Deepgram Voice Agent API vs Gemini Live API](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-gemini-live.md): B 68.1 vs C 57.1 - [Deepgram Voice Agent API vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-hume-evi.md): B 68.1 vs C 56.7 - [Deepgram Voice Agent API vs OpenAI Realtime API](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-openai-realtime.md): B 68.1 vs B 63.3 - [Deepgram Voice Agent API vs Retell AI API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-retell-ai.md): B 68.1 vs B 69.1 - [Deepgram Voice Agent API vs Synthflow API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-synthflow.md): B 68.1 vs D 51.1 - [Deepgram Voice Agent API vs Ultravox Realtime API](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-ultravox.md): B 68.1 vs C 58.5 - [Deepgram Voice Agent API vs Vapi API + MCP](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-vapi.md): B 68.1 vs B 63.5 - [Deepgram Voice Agent API vs Vocily AI](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-vocily.md): B 68.1 vs D 53.8 - [Deepgram Voice Agent API vs Vogent API](https://www.anchorterminal.com/compare/deepgram-voice-agent-vs-vogent.md): B 68.1 vs D 47.1 - [ElevenLabs Agents API + MCP vs Gemini Live API](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-gemini-live.md): BB 71.3 vs C 57.1 - [ElevenLabs Agents API + MCP vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-hume-evi.md): BB 71.3 vs C 56.7 - [ElevenLabs Agents API + MCP vs OpenAI Realtime API](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-openai-realtime.md): BB 71.3 vs B 63.3 - [ElevenLabs Agents API + MCP vs Retell AI API + MCP](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-retell-ai.md): BB 71.3 vs B 69.1 - [ElevenLabs Agents API + MCP vs Synthflow API + MCP](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-synthflow.md): BB 71.3 vs D 51.1 - [ElevenLabs Agents API + MCP vs Ultravox Realtime API](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-ultravox.md): BB 71.3 vs C 58.5 - [ElevenLabs Agents API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vapi.md): BB 71.3 vs B 63.5 - [ElevenLabs Agents API + MCP vs Vocily AI](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vocily.md): BB 71.3 vs D 53.8 - [ElevenLabs Agents API + MCP vs Vogent API](https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vogent.md): BB 71.3 vs D 47.1 - [Gemini Live API vs Hume EVI (Empathic Voice Interface)](https://www.anchorterminal.com/compare/gemini-live-vs-hume-evi.md): C 57.1 vs C 56.7 - [Gemini Live API vs OpenAI Realtime API](https://www.anchorterminal.com/compare/gemini-live-vs-openai-realtime.md): C 57.1 vs B 63.3 - [Gemini Live API vs Retell AI API + MCP](https://www.anchorterminal.com/compare/gemini-live-vs-retell-ai.md): C 57.1 vs B 69.1 - [Gemini Live API vs Synthflow API + MCP](https://www.anchorterminal.com/compare/gemini-live-vs-synthflow.md): C 57.1 vs D 51.1 - [Gemini Live API vs Ultravox Realtime API](https://www.anchorterminal.com/compare/gemini-live-vs-ultravox.md): C 57.1 vs C 58.5 - [Gemini Live API vs Vapi API + MCP](https://www.anchorterminal.com/compare/gemini-live-vs-vapi.md): C 57.1 vs B 63.5 - [Gemini Live API vs Vocily AI](https://www.anchorterminal.com/compare/gemini-live-vs-vocily.md): C 57.1 vs D 53.8 - [Gemini Live API vs Vogent API](https://www.anchorterminal.com/compare/gemini-live-vs-vogent.md): C 57.1 vs D 47.1 - [Hume EVI (Empathic Voice Interface) vs OpenAI Realtime API](https://www.anchorterminal.com/compare/hume-evi-vs-openai-realtime.md): C 56.7 vs B 63.3 - [Hume EVI (Empathic Voice Interface) vs Retell AI API + MCP](https://www.anchorterminal.com/compare/hume-evi-vs-retell-ai.md): C 56.7 vs B 69.1 - [Hume EVI (Empathic Voice Interface) vs Synthflow API + MCP](https://www.anchorterminal.com/compare/hume-evi-vs-synthflow.md): C 56.7 vs D 51.1 - [Hume EVI (Empathic Voice Interface) vs Ultravox Realtime API](https://www.anchorterminal.com/compare/hume-evi-vs-ultravox.md): C 56.7 vs C 58.5 - [Hume EVI (Empathic Voice Interface) vs Vapi API + MCP](https://www.anchorterminal.com/compare/hume-evi-vs-vapi.md): C 56.7 vs B 63.5 - [Hume EVI (Empathic Voice Interface) vs Vocily AI](https://www.anchorterminal.com/compare/hume-evi-vs-vocily.md): C 56.7 vs D 53.8 - [Hume EVI (Empathic Voice Interface) vs Vogent API](https://www.anchorterminal.com/compare/hume-evi-vs-vogent.md): C 56.7 vs D 47.1 - [OpenAI Realtime API vs Retell AI API + MCP](https://www.anchorterminal.com/compare/openai-realtime-vs-retell-ai.md): B 63.3 vs B 69.1 - [OpenAI Realtime API vs Synthflow API + MCP](https://www.anchorterminal.com/compare/openai-realtime-vs-synthflow.md): B 63.3 vs D 51.1 - [OpenAI Realtime API vs Ultravox Realtime API](https://www.anchorterminal.com/compare/openai-realtime-vs-ultravox.md): B 63.3 vs C 58.5 - [OpenAI Realtime API vs Vapi API + MCP](https://www.anchorterminal.com/compare/openai-realtime-vs-vapi.md): B 63.3 vs B 63.5 - [OpenAI Realtime API vs Vocily AI](https://www.anchorterminal.com/compare/openai-realtime-vs-vocily.md): B 63.3 vs D 53.8 - [OpenAI Realtime API vs Vogent API](https://www.anchorterminal.com/compare/openai-realtime-vs-vogent.md): B 63.3 vs D 47.1 - [Retell AI API + MCP vs Synthflow API + MCP](https://www.anchorterminal.com/compare/retell-ai-vs-synthflow.md): B 69.1 vs D 51.1 - [Retell AI API + MCP vs Ultravox Realtime API](https://www.anchorterminal.com/compare/retell-ai-vs-ultravox.md): B 69.1 vs C 58.5 - [Retell AI API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/retell-ai-vs-vapi.md): B 69.1 vs B 63.5 - [Retell AI API + MCP vs Vocily AI](https://www.anchorterminal.com/compare/retell-ai-vs-vocily.md): B 69.1 vs D 53.8 - [Retell AI API + MCP vs Vogent API](https://www.anchorterminal.com/compare/retell-ai-vs-vogent.md): B 69.1 vs D 47.1 - [Synthflow API + MCP vs Ultravox Realtime API](https://www.anchorterminal.com/compare/synthflow-vs-ultravox.md): D 51.1 vs C 58.5 - [Synthflow API + MCP vs Vapi API + MCP](https://www.anchorterminal.com/compare/synthflow-vs-vapi.md): D 51.1 vs B 63.5 - [Synthflow API + MCP vs Vocily AI](https://www.anchorterminal.com/compare/synthflow-vs-vocily.md): D 51.1 vs D 53.8 - [Synthflow API + MCP vs Vogent API](https://www.anchorterminal.com/compare/synthflow-vs-vogent.md): D 51.1 vs D 47.1 - [Ultravox Realtime API vs Vapi API + MCP](https://www.anchorterminal.com/compare/ultravox-vs-vapi.md): C 58.5 vs B 63.5 - [Ultravox Realtime API vs Vocily AI](https://www.anchorterminal.com/compare/ultravox-vs-vocily.md): C 58.5 vs D 53.8 - [Ultravox Realtime API vs Vogent API](https://www.anchorterminal.com/compare/ultravox-vs-vogent.md): C 58.5 vs D 47.1 - [Vapi API + MCP vs Vocily AI](https://www.anchorterminal.com/compare/vapi-vs-vocily.md): B 63.5 vs D 53.8 - [Vapi API + MCP vs Vogent API](https://www.anchorterminal.com/compare/vapi-vs-vogent.md): B 63.5 vs D 47.1 - [Vocily AI vs Vogent API](https://www.anchorterminal.com/compare/vocily-vs-vogent.md): D 53.8 vs D 47.1