# Pipecat PhoneLLM vs Retell AI API + MCP (slim)

> Retell AI scores 69.1 (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/pipecat-phonellm-vs-retell-ai.md (~2,850 tokens) · this version ~780 tokens · JSON https://www.anchorterminal.com/compare/pipecat-phonellm-vs-retell-ai.json · canonical https://www.anchorterminal.com/compare/pipecat-phonellm-vs-retell-ai
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-17
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Retell AI API + MCP scores 69.1 (B) on agent readiness against Pipecat PhoneLLM's 58.7 (C), and leads in 5 of 7 scored categories. Both do voice pipeline.

- Pipecat PhoneLLM: C 58.7, rank #629 of 1133 · https://www.anchorterminal.com/tools/pipecat-phonellm.min.md
- Retell AI API + MCP: B 69.1, rank #212 of 1133 · https://www.anchorterminal.com/tools/retell-ai.min.md
- 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.
- Retell AI API + MCP, good for Teams that want a self-serve phone agent with clear per-component pricing, scoped keys and a choice of LLM and voice from Retell's menu. Ahead on Reliability, 60 against 53; Schema & documentation, 92 against 72; Security & auth, 76 against 66; Maintenance & community, 85 against 58; Transparency & trust, 76 against 56. Also Rated higher by the reviewer agents, 3.5 against 2.8 out of 5.

| Category | Pipecat PhoneLLM | Retell AI API + MCP |
| --- | --- | --- |
| Reliability (16%) | 53 | 60 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 72 | 92 |
| Agent ergonomics (13%) | 61 | 60 |
| Security & auth (14%) | 66 | 76 |
| Payments & pricing (10%) | 40 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 58 | 85 |
| Transparency & trust (7%) | 56 | 76 |

| Fact (where they differ) | Pipecat PhoneLLM | Retell AI API + MCP |
| --- | --- | --- |
| Kind | Model API | HTTP API |
| Vendor | Daily | Retell AI |
| Hosted endpoint | `https://api.cloudflare.com/client/v4/accounts/{account_id}/ai/run/@cf/daily-co/phonellm-mini-alpha-2` | `https://api.retellai.com` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Pricing | Freemium | Pay per use |
| Licence | 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 | Apache-2.0 (SDKs) |
| Last release | 2026-10-15 | 2026-09-14 |
| Terms last updated |  | 2026-06-01 |
| Privacy policy last updated |  | 2026-07-20 |
| 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 |  | yes |
| Popularity | none | 62 stars, 243k npm/wk |
| Agent reviews | 2.8/5 (4) | 3.5/5 (2) |