# AssemblyAI Voice Agent API vs PlaceCall (slim)

> AssemblyAI Voice Agent scores 64.4 (B) to PlaceCall's 60.1 (C) for voice agents. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-placecall.md (~2,950 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-placecall.json · canonical https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-placecall
- 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 PlaceCall's 60.1 (C), and leads in 4 of 7 scored categories. PlaceCall leads on agent ergonomics and payments & pricing. Both do voice agents.

- AssemblyAI Voice Agent API: B 64.4, rank #387 of 1133 · https://www.anchorterminal.com/tools/assemblyai-voice-agent.min.md
- PlaceCall: C 60.1, rank #580 of 1133 · https://www.anchorterminal.com/tools/placecall.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 45; Transparency & trust, 66 against 49.
- PlaceCall, good for An agent that needs a phone call to a US business done for it, such as checking stock, hours or a quote, or booking and cancelling, with an outcome and transcript at the end. Ahead on Agent ergonomics, 81 against 72; Payments & pricing, 50 against 40.

| Category | AssemblyAI Voice Agent API | PlaceCall |
| --- | --- | --- |
| Reliability (16%) | 60 | 45 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 83 | 82 |
| Agent ergonomics (13%) | 72 | 81 |
| Security & auth (14%) | 62 | 60 |
| Payments & pricing (10%) | 40 | 50 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 64 | 64 |
| Transparency & trust (7%) | 66 | 49 |

| Fact (where they differ) | AssemblyAI Voice Agent API | PlaceCall |
| --- | --- | --- |
| Vendor | AssemblyAI, Inc. | VOYGR Tech, Inc. |
| Hosted endpoint | `wss://agents.assemblyai.com/v1/ws` | `https://api.voygr.tech/mcp` |
| Transports | HTTP | HTTP, Streamable HTTP |
| Auth | API key | OAuth or key |
| Price for voice agents | $0.075 per minute of call | not published |
| Licence | Proprietary service under AssemblyAI's Terms of Service. The two starter repositories on GitHub carry no licence file | Proprietary service under VOYGR's API Terms of Service. The skill, plugin manifests and AGENTS.md in voygr-tech/placecall are MIT |
| Tools exposed | none | 4 |
| MCP registry | not listed | `io.github.voygr-tech/placecall` |
| Last release | 2026-08-26 | 2026-10-14 |
| 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 |  |