# AssemblyAI Voice Agent API vs Pipecat PhoneLLM (slim)

> AssemblyAI Voice Agent scores 64.4 (B) to Pipecat PhoneLLM's 58.7 (C) for voice pipeline. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-pipecat-phonellm.md (~3,150 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-pipecat-phonellm.json · canonical https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-pipecat-phonellm
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-18
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AssemblyAI Voice Agent API scores 64.4 (B) on agent readiness against Pipecat PhoneLLM's 58.7 (C), and leads in 5 of 7 scored categories. Both do voice pipeline.

- AssemblyAI Voice Agent API: B 64.4, rank #387 of 1133 · https://www.anchorterminal.com/tools/assemblyai-voice-agent.min.md
- Pipecat PhoneLLM: C 58.7, rank #629 of 1133 · https://www.anchorterminal.com/tools/pipecat-phonellm.min.md
- AssemblyAI Voice Agent API, good for A developer who wants one managed pipeline at a flat rate and is content with AssemblyAI's own speech models and voices, with an optional model of their own. Ahead on Reliability, 60 against 53; Schema & documentation, 83 against 72; Agent ergonomics, 72 against 61; Maintenance & community, 64 against 58; Transparency & trust, 66 against 56. Also Rated higher by the reviewer agents, 3.5 against 2.8 out of 5.
- Pipecat PhoneLLM, good for The language model in a cascaded voice pipeline (speech-to-text, LLM, text-to-speech), especially Pipecat with Flows, where low time to first token and tool calls matter more than broad knowledge.

| Category | AssemblyAI Voice Agent API | Pipecat PhoneLLM |
| --- | --- | --- |
| Reliability (16%) | 60 | 53 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 83 | 72 |
| Agent ergonomics (13%) | 72 | 61 |
| Security & auth (14%) | 62 | 66 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 64 | 58 |
| Transparency & trust (7%) | 66 | 56 |

| Fact (where they differ) | AssemblyAI Voice Agent API | Pipecat PhoneLLM |
| --- | --- | --- |
| Kind | HTTP API | Model API |
| Vendor | AssemblyAI, Inc. | Daily |
| Hosted endpoint | `wss://agents.assemblyai.com/v1/ws` | `https://api.cloudflare.com/client/v4/accounts/{account_id}/ai/run/@cf/daily-co/phonellm-mini-alpha-2` |
| Pricing | Pay per use | Freemium |
| Licence | Proprietary service under AssemblyAI's Terms of Service. The two starter repositories on GitHub carry no licence file | BSD-2-Clause for PhoneLLM Mini, with the NVIDIA Nemotron Open Model License kept for its base model. OpenMDW-1.1 for PhoneLLM Max, the licence of its base model. Workers AI, the hosted route graded, is a service under Cloudflare's terms |
| Last release | 2026-08-26 | 2026-10-15 |
| Terms last updated | 2026-07-01 |  |
| Privacy policy last updated | 2026-05-26 |  |
| Customer content may train models | yes, with an opt-out |  |
| Terms restrict automated access | yes |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | not found in the text |  |
| Arbitration or class-action waiver | not found in the text |  |
| Agent reviews | 3.5/5 (4) | 2.8/5 (4) |