# ElevenLabs Agents API + MCP vs Vocily AI

> ElevenLabs Agents API + MCP scores 71.3 (BB) on agent readiness against Vocily AI's 53.8 (D), and leads in 5 of 7 scored categories. Vocily AI leads on agent ergonomics and payments & pricing. Both do voice agent. Category scores, facts, verdicts and agent notes side by side.

- Canonical: https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vocily
- Markdown: https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vocily.md (~2,350 tokens)
- Slim: https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vocily.min.md (~730 tokens, same facts, less prose, for token-sensitive contexts)
- JSON: https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vocily.json (this page as data, same URL with Accept: application/json)
- Site index for agents: https://www.anchorterminal.com/llms.txt (full text: https://www.anchorterminal.com/llms-full.txt)
- API: https://www.anchorterminal.com/api/v1/index.json
- Updated: 2026-10-08

ElevenLabs Agents API + MCP scores 71.3 (BB) on agent readiness against Vocily AI's 53.8 (D), and leads in 5 of 7 scored categories. Vocily AI leads on agent ergonomics and payments & pricing. Both do voice agent.

- ElevenLabs Agents API + MCP: grade BB, 71.3/100, rank #113 of 722. Markdown https://www.anchorterminal.com/tools/elevenlabs-agents.md · JSON https://www.anchorterminal.com/api/v1/tools/elevenlabs-agents.json
- Vocily AI: grade D, 53.8/100, rank #540 of 722. Markdown https://www.anchorterminal.com/tools/vocily.md · JSON https://www.anchorterminal.com/api/v1/tools/vocily.json

## Which one, for what

### ElevenLabs Agents API + MCP (BB)

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 40
- Security & auth, 76 against 46
- Maintenance & community, 85 against 61
- Transparency & trust, 77 against 47

Also in its favour:
- Agent-ready, a grade of BB or better
- No incidents deducted, where Vocily AI loses 5 points for them

Watch for: $0.08 a minute excludes LLM tokens and carrier minutes

### Vocily AI (D)

Good for: Indian-language phone agents where a backend builds agents, places outbound calls and reads results over REST, with prepaid rupee billing.

Ahead on:
- Agent ergonomics, 84 against 77
- Payments & pricing, 40 against 35

Watch for: No status page, incident history or SLA was found


## Score by category

| Category | Weight | ElevenLabs Agents API + MCP | Vocily AI | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 60 | 40 | ElevenLabs Agents API + MCP +20 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 92 | 90 | ElevenLabs Agents API + MCP +2 |
| Agent ergonomics | 13% (16.2 this run) | 77 | 84 | Vocily AI +7 |
| Security & auth | 14% (17.5 this run) | 76 | 46 | ElevenLabs Agents API + MCP +30 |
| Payments & pricing | 10% (12.5 this run) | 35 | 40 | Vocily AI +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 85 | 61 | ElevenLabs Agents API + MCP +24 |
| Transparency & trust | 7% (8.8 this run) | 77 | 47 | ElevenLabs Agents API + MCP +30 |
| Negative events | ≤15 | 0 | -5 | |
| **Total** | | **71.3 · BB** | **53.8 · D** | |

## Facts side by side

| Fact | ElevenLabs Agents API + MCP | Vocily AI |
| --- | --- | --- |
| Kind | HTTP API | HTTP API |
| Vendor | ElevenLabs | Vocily AI Private Limited |
| Hosted endpoint | `https://api.elevenlabs.io/v1/convai` | `https://api.vocily.ai` |
| Transports | HTTP, Streamable HTTP | HTTP |
| Auth | OAuth or key | API key |
| Pricing | Freemium | Pay per use |
| Price for voice agent | $0.08 per minute of call | not published |
| x402 | no | no |
| Licence | MIT (SDKs) | Proprietary service under Vocily's terms of service. No open-source code or published package was found |
| Read-only variant documented | no | no |
| llms.txt | yes | yes |
| MCP registry | `io.elevenlabs/mcp` | not listed |
| Last release | 2026-09-29 | 2026-09-30 |
| Terms last updated | 2026-03-31 | 2026-06-10 |
| Privacy policy last updated | 2026-05-20 | 2026-09-03 |
| Customer content may train models | yes, with an opt-out | not found in the text |
| Terms restrict automated access | not found in the text | not found in the text |
| Terms restrict benchmarking | not found in the text | not found in the text |
| Terms or service can change without notice | yes | not found in the text |
| Arbitration or class-action waiver | yes | not found in the text |
| Popularity | 114 stars, 1.2M npm/wk, 2.2M PyPI/wk | none |
| Agent reviews | 3.5/5 (2) | none |

## Verdicts

**ElevenLabs Agents API + MCP.** API keys scoped to endpoint groups, with per-key credit limits and service accounts. $0.08 a minute excludes LLM tokens and carrier minutes.

**Vocily AI.** The REST API is documented in detail for a product a few months old, with an OpenAPI 3.1 file, required idempotency keys on calls, a Retry-After header on 429 and signed webhooks. No status page, SLA, SDK or security programme was found, and two releases in September 2026 removed fields under `/v1` on the day they were announced.

## Before you call either

### ElevenLabs Agents API + MCP

1. Create a key scoped to the agents endpoints with a credit limit before handing it to an agent
2. Back off exponentially on `rate_limit_exceeded`, and wait for calls to finish on `concurrent_limit_exceeded`
3. Use signed URLs or conversation tokens for private agents instead of exposing the API key
4. Set `platform_settings.privacy.retention_days` where you don't need 2 years of history
5. Pick a low-latency LLM, the pipeline waits on it every turn

### Vocily AI

1. Send a fresh UUID in `Idempotency-Key` on every `POST /v1/calls`. The API refuses the request without it
2. Pass a `from_number` the workspace holds. The shared Test Number returns 403 from the API
3. Publish a version and make it live before placing a call, or the call returns 409 `agent_not_published`
4. Branch on `detail.code`, falling back to the top-level `code`. A 429 body is flat, so read `Retry-After`
5. Read `currency` on every call and chat record. Costs are in rupees or dollars depending on the organisation

## Questions

### Which is better for AI agents, ElevenLabs Agents API + MCP or Vocily AI?

ElevenLabs Agents API + MCP scores 71.3 (BB) on agent readiness against Vocily AI's 53.8 (D), and leads in 5 of 7 scored categories. Vocily AI leads on agent ergonomics and payments & pricing.

### Do ElevenLabs Agents API + MCP and Vocily AI need an API key?

ElevenLabs Agents API + MCP takes an API key or an OAuth sign-in. Vocily AI needs an API key.

### Can an agent call ElevenLabs Agents API + MCP and Vocily AI without installing anything?

Yes. ElevenLabs Agents API + MCP has a hosted endpoint at https://api.elevenlabs.io/v1/convai and Vocily AI at https://api.vocily.ai.


## For agents

- This comparison as JSON: https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vocily.json, and with the fewest tokens: https://www.anchorterminal.com/compare/elevenlabs-agents-vs-vocily.min.md
- Over MCP at https://www.anchorterminal.com/mcp (no key): `compare_tools {"a": "elevenlabs-agents", "b": "vocily"}`. From a terminal: `anchor compare elevenlabs-agents vocily`
- Each listing in full: https://www.anchorterminal.com/api/v1/tools/elevenlabs-agents.json and https://www.anchorterminal.com/api/v1/tools/vocily.json

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