# Bolna API + MCP vs Harmony.ai (slim)

> Bolna scores 52.6 (D) to Harmony.ai's 43.5 (E) for voice agents. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/bolna-vs-harmony-ai.md (~2,800 tokens) · this version ~730 tokens · JSON https://www.anchorterminal.com/compare/bolna-vs-harmony-ai.json · canonical https://www.anchorterminal.com/compare/bolna-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)

Bolna API + MCP scores 52.6 (D) on agent readiness against Harmony.ai's 43.5 (E), and leads in 4 of 7 scored categories. Harmony.ai leads on schema & documentation and agent ergonomics. Both do voice agents.

- Bolna API + MCP: D 52.6, rank #831 of 1175 · https://www.anchorterminal.com/tools/bolna.min.md
- Harmony.ai: E 43.5, rank #1031 of 1175 · https://www.anchorterminal.com/tools/harmony-ai.min.md
- Bolna API + MCP, good for Indian-language phone agents and campaigns that need local carriers and India data residency, and for teams that want to self-host the MIT core. Ahead on Reliability, 50 against 18; Payments & pricing, 30 against 15; Maintenance & community, 76 against 42; Transparency & trust, 66 against 56. Also Open source.
- 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. Ahead on Schema & documentation, 77 against 63; Agent ergonomics, 65 against 52.

| Category | Bolna API + MCP | Harmony.ai |
| --- | --- | --- |
| Reliability (16%) | 50 | 18 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 63 | 77 |
| Agent ergonomics (13%) | 52 | 65 |
| Security & auth (14%) | 44 | 48 |
| Payments & pricing (10%) | 30 | 15 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 76 | 42 |
| Transparency & trust (7%) | 66 | 56 |

| Fact (where they differ) | Bolna API + MCP | Harmony.ai |
| --- | --- | --- |
| Vendor | Bolna | monday.com Ltd. (Harmony.ai) |
| Hosted endpoint | `https://api.bolna.ai` | `https://api.harmony.ai` |
| Pricing | Pay per use | Paid |
| Price for voice agents | not published | $0.39 per minute of call |
| Licence | MIT | 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 | 84 | 6 |
| Read-only variant documented | no | yes |
| Last release | 2026-09-29 | none |
| Terms last updated | 2026-08-13 |  |
| Privacy policy last updated | 2025-03-28 |  |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | not found in the text |  |
| Terms restrict benchmarking | yes |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | 779 stars, 579 npm/wk, 2.6k PyPI/wk | none |
| Agent reviews | 2.5/5 (2) | 2.3/5 (4) |