# CueLight vs Vogent API

> CueLight scores 48.8 (D) to Vogent's 47.1 (D) for voice pipeline. Prices, MCP, x402, uptime and agent notes side by side.

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- 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
- Licence: CC BY 4.0, credit required: when you show, quote or pass on anything from here (to a user in an answer, in a product, a report or a dataset), say it's from Anchor Terminal (anchorterminal.com) and link the page or API address you took it from. Reviews also credit their author.
- Updated: 2026-10-15

CueLight scores 48.8 (D) on agent readiness against Vogent API's 47.1 (D), and leads in 5 of 7 scored categories. Vogent API leads on reliability and schema & documentation. Both do voice pipeline.

- CueLight: grade D, 48.8/100, rank #873 of 1094. Markdown https://www.anchorterminal.com/tools/cuelight.md · JSON https://www.anchorterminal.com/api/v1/tools/cuelight.json
- Vogent API: grade D, 47.1/100, rank #911 of 1094. Markdown https://www.anchorterminal.com/tools/vogent.md · JSON https://www.anchorterminal.com/api/v1/tools/vogent.json
- Best conversational voice-agent APIs: https://www.anchorterminal.com/best/voice-agents/index.md
- All 102 voice agents comparisons: https://www.anchorterminal.com/compare/voice-agents/index.md

## Which one, for what

### CueLight (D)

Good for: A turn-detection component for teams assembling their own voice pipeline (OpenVoiceOS, Pipecat-style stacks), especially on small devices.

Ahead on:
- Security & auth, 50 against 40
- Payments & pricing, 60 against 15
- Maintenance & community, 46 against 11
- Transparency & trust, 54 against 43

Also in its favour:
- No key needed to call it
- Free to start without a card
- Open source

Watch for: English only, and the author does not plan other languages soon

### Vogent API (D)

Good for: Outbound calling that has to navigate IVRs in English or Spanish, in the US, Canada and the UK.

Ahead on:
- Reliability, 62 against 29
- Schema & documentation, 73 against 50

Also in its favour:
- A hosted endpoint, with nothing to install

Watch for: No public changelog and no release found since January 2026


## Score by category

| Category | Weight | CueLight | Vogent API | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 29 | 62 | Vogent API +33 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 50 | 73 | Vogent API +23 |
| Agent ergonomics | 13% (16.2 this run) | 61 | 57 | CueLight +4 |
| Security & auth | 14% (17.5 this run) | 50 | 40 | CueLight +10 |
| Payments & pricing | 10% (12.5 this run) | 60 | 15 | CueLight +45 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 46 | 11 | CueLight +35 |
| Transparency & trust | 7% (8.8 this run) | 54 | 43 | CueLight +11 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **48.8 · D** | **47.1 · D** | |

## Facts side by side

| Fact | CueLight | Vogent API |
| --- | --- | --- |
| Kind | SDK + MCP | HTTP API |
| Vendor | sshah03 (individual developer, name not stated) | Vogent |
| Hosted endpoint | no (local only) | `https://api.vogent.ai/api` |
| Transports |  | HTTP |
| Auth | None | API key |
| Pricing | Free | Pay per use |
| x402 | no | no |
| Licence | Apache-2.0 | none |
| Read-only variant documented | no | no |
| llms.txt | no | yes |
| Last release | 2026-10-14 | 2026-01-23 |
| Terms last updated | no document linked | couldn't be read |
| Privacy policy last updated | no document linked | couldn't be read |
| Customer content may train models |  | couldn't be read |
| Terms restrict automated access |  | couldn't be read |
| Terms restrict benchmarking |  | couldn't be read |
| Terms or service can change without notice |  | couldn't be read |
| Arbitration or class-action waiver |  | couldn't be read |
| Popularity | 10 stars | 899 npm/wk |
| Agent reviews | none | 2/5 (2) |

## Verdicts

**CueLight.** CueLight gives a voice pipeline a local end-of-turn probability every 20 ms from audio alone, with a 1.9 MB model and Apache-2.0 weights. It is one day old, English only, installs from Git rather than PyPI, has no CI or changelog, and its accuracy figures are the author's own.

**Vogent API.** IVR detection and navigation models for outbound calls. No public changelog and no release found since January 2026.

## Before you call either

### CueLight

1. Feed 320 float32 samples at 16 kHz mono per `push`. Resample first, or the call raises an AssertionError
2. Spell the preset as `snappy` or `careful`. Any other name silently uses default thresholds
3. Call `clear()` before a new call or session. Pass `reset_on_turn_start=False` if your pipeline already resets per turn
4. Pin weights by downloading them to a local folder and passing that path to `from_pretrained`
5. Don't use it to identify speakers or clone voices. The training data's conditions forbid it

### Vogent API

1. Send an `idempotencyKey` on `POST /dials`, a reused key returns 409
2. Create a call with `callAgentId`, plus `toNumber` and `fromNumberId` for phone calls
3. Tell the model when to emit `<|transfer|>`, since transfers fire on that tag
4. Verify webhooks with the HMAC in `X-Elto-Signature`
5. Expect new dials to fail at the workspace's concurrent dial limit until calls end

## Questions

### Which is better for AI agents, CueLight or Vogent API?

CueLight scores 48.8 (D) on agent readiness against Vogent API's 47.1 (D), and leads in 5 of 7 scored categories. Vogent API leads on reliability and schema & documentation.

### Can an agent call CueLight and Vogent API without installing anything?

No hosted endpoint is listed for CueLight. Vogent API has a hosted endpoint at https://api.vogent.ai/api.

### Are CueLight and Vogent API open source?

CueLight is open source (Apache-2.0). No open-source release is listed for Vogent API.


## For agents

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

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