# Bolna API + MCP vs Retell AI API + MCP (slim)

> Retell AI API + MCP has a score of 69.4 (B) against Bolna API + MCP's 52.9 (D). Both do voice agent. The largest gap is security & auth, 32 points. Category scores, facts, verdicts and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/bolna-vs-retell-ai.md (~1,650 tokens) · this version ~380 tokens · JSON https://www.anchorterminal.com/compare/bolna-vs-retell-ai.json · canonical https://www.anchorterminal.com/compare/bolna-vs-retell-ai
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · Updated: 2026-10-04

Retell AI API + MCP has a score of 69.4 (B) against Bolna API + MCP's 52.9 (D). Both do voice agent. The largest gap is security & auth, 32 points.

- Bolna API + MCP: D 52.9, rank #339 of 452 · https://www.anchorterminal.com/tools/bolna.min.md
- Retell AI API + MCP: B 69.4, rank #114 of 452 · https://www.anchorterminal.com/tools/retell-ai.min.md
- Pick Bolna API + MCP for nothing in particular. Pick Retell AI API + MCP for reliability (+10), schema & documentation (+29), agent ergonomics (+8), security & auth (+32), payments & pricing (+10), maintenance & community (+9), transparency & trust (+9).

| Category | Bolna API + MCP | Retell AI API + MCP |
| --- | --- | --- |
| Reliability (16%) | 50 | 60 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 63 | 92 |
| Agent ergonomics (13%) | 52 | 60 |
| Security & auth (14%) | 44 | 76 |
| Payments & pricing (10%) | 30 | 40 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 76 | 85 |
| Transparency & trust (7%) | 70 | 79 |