# 46elks Voice API vs Exotel Voice API + MCP (slim)

> 46elks Voice scores 44.4 (E) to Exotel Voice's 39.5 (E) for phone calls. Prices, MCP, x402, uptime and agent notes side by side.

- Full: https://www.anchorterminal.com/compare/46elks-vs-exotel-voice.md (~3,250 tokens) · this version ~1,380 tokens · JSON https://www.anchorterminal.com/compare/46elks-vs-exotel-voice.json · canonical https://www.anchorterminal.com/compare/46elks-vs-exotel-voice
- Index: https://www.anchorterminal.com/llms.txt · API: https://www.anchorterminal.com/api/v1/index.json · MCP: https://www.anchorterminal.com/mcp · Updated: 2026-11-07
- Licence: CC BY 4.0, credit Anchor Terminal and link this page (https://www.anchorterminal.com/terms/#data)

46elks Voice API scores 44.4 (E) on agent readiness against Exotel Voice API + MCP's 39.5 (E), and leads in 4 of 7 scored categories. Both do phone calls.

- 46elks Voice API: E 44.4, rank #1203 of 1486 · https://www.anchorterminal.com/tools/46elks.min.md
- Exotel Voice API + MCP: E 39.5, rank #1321 of 1486 · https://www.anchorterminal.com/tools/exotel-voice.min.md
- 46elks Voice API, good for European teams that want EU-resident calling and numbers with a simple REST API and a WebSocket bridge to an AI agent. Ahead on Schema & documentation, 66 against 48; Agent ergonomics, 51 against 40; Maintenance & community, 12 against 5.
- Exotel Voice API + MCP, good for Voice agents calling Indian numbers that need local compliance and a hosted MCP. Also Free to start without a card.

| Category | 46elks Voice API | Exotel Voice API + MCP |
| --- | --- | --- |
| Reliability (16%) | 47 | 50 |
| Performance (10%) | pending | pending |
| Schema & documentation (13%) | 66 | 48 |
| Agent ergonomics (13%) | 51 | 40 |
| Security & auth (14%) | 40 | 40 |
| Payments & pricing (10%) | 20 | 20 |
| Task success (10%) | pending | pending |
| Maintenance & community (7%) | 12 | 5 |
| Transparency & trust (7%) | 62 | 60 |

| Fact (where they differ) | 46elks Voice API | Exotel Voice API + MCP |
| --- | --- | --- |
| Vendor | 46elks AB | Exotel |
| Hosted endpoint | `https://api.46elks.com/a1` | `https://api.exotel.com/v1` |
| Transports | HTTP, websocket | HTTP, Streamable HTTP |
| Price for phone calls | $0.017 per minute of call | not published |
| Licence | Proprietary service under the 46elks Terms of Service (effective 12 March 2024). Example code and the Swagger file are in the public 46elks-getting-started repository | MIT |
| Tools exposed | none | 62 |
| llms.txt | yes | no |
| Terms last updated | 2024-03-12 | no date given |
| Privacy policy last updated | 2018-05-20 | no date given |
| Terms restrict benchmarking | not found in the text | yes |
| Terms or service can change without notice | yes | not found in the text |
| Popularity | none | 5 stars |
| Agent reviews | none | 2/5 (2) |

Why the edge:
- Schema & documentation, 46elks Voice API +18: 46elks Voice API 66 (A Swagger 2.0 file with 28 operations is linked from the docs, but it covers no Realtime Voice messages and isn't versioned with the API (18 of 25). An llms.txt written for agents, with a task-to-endpoint table and webhook payloads, while docs pages are HTML (10). Each docs page explains parameters and when webhooks fire, such as `voice_start` loading only once a call connects (14 of 20). Form-encoded parameters with types in the Swagger file and few enums (9 of 15). Examples in many languages and a JSON error shape, with no error list (10 of 15). The `/a1/` path, with no changelog found (5 of 15). 18+10+14+9+10+5 = 66.); Exotel Voice API + MCP 48 (No OpenAPI spec found (0). The listing's llms.txt at developer.exotel.com/llms.txt returns 404, as does /docs/llms.txt, and exotel.com has none (0). Reference pages state what each API does, such as Connect two numbers and AgentStream (12 of 20). Form-encoded parameters with types listed, no machine-readable schema (8 of 15). Since February 2026 the docs have an interactive console, multi-language code tabs and an error code dictionary (13 of 15). Versioned v1 and v3 APIs and a public changelog (15).)
- Agent ergonomics, 46elks Voice API +11: 46elks Voice API 51 (Compact JSON responses, and call actions returned as small JSON objects (18 of 25). History endpoints list calls and recordings, with paging parameters not confirmed (10 of 20). Errors carry `error` and `detail` (12 of 20). No idempotency key on `POST /calls` or number allocation (3 of 20). Three required fields to place a call, no official SDK, examples in 12 or more languages (8 of 15). 18+10+12+3+8 = 51.); Exotel Voice API + MCP 40 (Call detail lists exist, and we didn't confirm page-size or field controls (10 of 25). Pagination and filters not confirmed (10 of 20). Error code dictionary (15 of 20). No idempotency key or safe-retry guidance found (0). No official server SDK on npm or PyPI, only a WebRTC SDK. A Connect call needs From, To and CallerId, plus the right regional host (5 of 15).)
- Maintenance & community, 46elks Voice API +7: 46elks Voice API 12 (No changelog, release notes or dated API change was found, the sitemap's newest blog post is from 2014, and the Swagger file predates Realtime Voice (0). No dated changes in the 90 days from 8 August (0). Support by phone and email on workdays with a typical 60-minute response stated, and 24/7 error reporting (10 of 15). No official SDK (0). The public examples repository answers, but its history wasn't read (2 of 10). 0+0+10+0+2 = 12.); Exotel Voice API + MCP 5 (The developer changelog's newest entry is a docs upgrade on 2026-02-16, and the newest API entry is Gen AI APIs in January 2026, over 180 days ago (0). No dated entries in the last 90 days (0). Support exists, and the ExotelMCP repo has 30 commits and 5 stars. We didn't sample issue replies (5 of 15). No official server SDKs (0). No package to judge (0).)