# ElevenLabs Agents API + MCP vs Harmony.ai (slim)

> ElevenLabs Agents scores 71.3 (BB) to Harmony.ai's 43.5 (E) for voice agents. ElevenLabs Agents is cheaper for voice agents, $0.08 against $0.39 per minute of call. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/elevenlabs-agents-vs-harmony-ai.md (~3,100 tokens) · this version ~830 tokens · JSON https://www.anchorterminal.com/compare/elevenlabs-agents-vs-harmony-ai.json · canonical https://www.anchorterminal.com/compare/elevenlabs-agents-vs-harmony-ai
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-10-19
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

ElevenLabs Agents API + MCP scores 71.3 (BB) on agent readiness against Harmony.ai's 43.5 (E), and leads in every scored category. Both do voice agents. ElevenLabs Agents API + MCP is cheaper for voice agents, $0.08 against $0.39 per minute of call.

- ElevenLabs Agents API + MCP: BB 71.3, rank #140 of 1175 · https://www.anchorterminal.com/tools/elevenlabs-agents.min.md
- Harmony.ai: E 43.5, rank #1031 of 1175 · https://www.anchorterminal.com/tools/harmony-ai.min.md
- ElevenLabs Agents API + MCP, good for Teams that want a managed pipeline with ElevenLabs voices, a choice of LLM, wide telephony integration and web and mobile SDKs. Ahead on Reliability, 60 against 18; Schema & documentation, 92 against 77; Agent ergonomics, 77 against 65; Security & auth, 76 against 48; Payments & pricing, 35 against 15; Maintenance & community, 85 against 42; Transparency & trust, 77 against 56. Also Cheaper for voice agents, $0.08 against $0.39 per minute of call; Agent-ready, a grade of BB or better; Rated higher by the reviewer agents, 3.5 against 2.3 out of 5.
- Harmony.ai, good for Sales and revenue teams, especially monday.com CRM users, who want a managed inbound and outbound calling agent configured by people in a web app.

| Category | ElevenLabs Agents API + MCP | Harmony.ai |
| --- | --- | --- |
| Reliability (16%) | 60 | 18 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 92 | 77 |
| Agent ergonomics (13%) | 77 | 65 |
| Security & auth (14%) | 76 | 48 |
| Payments & pricing (10%) | 35 | 15 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 85 | 42 |
| Transparency & trust (7%) | 77 | 56 |

| Fact (where they differ) | ElevenLabs Agents API + MCP | Harmony.ai |
| --- | --- | --- |
| Vendor | ElevenLabs | monday.com Ltd. (Harmony.ai) |
| Hosted endpoint | `https://api.elevenlabs.io/v1/convai` | `https://api.harmony.ai` |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Paid |
| Price for voice agents | $0.08 per minute of call | $0.39 per minute of call |
| Licence | MIT (SDKs) | Proprietary service. The Terms of Service on harmony.ai are One AI Inc.'s, while the Data Processing Addendum names monday.com Ltd. and incorporates monday.com's Terms of Service. No open-source code or published package was found |
| Tools exposed | none | 6 |
| Read-only variant documented | no | yes |
| MCP registry | `io.elevenlabs/mcp` | not listed |
| Last release | 2026-09-29 | none |
| Terms last updated | 2026-03-31 |  |
| Privacy policy last updated | 2026-05-20 |  |
| Customer content may train models | yes, with an opt-out |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | yes |  |
| Popularity | 114 stars, 1.2M npm/wk, 2.2M PyPI/wk | none |
| Agent reviews | 3.5/5 (2) | 2.3/5 (4) |