# Bland AI API + MCP vs CueLight

> Bland AI scores 63.8 (B) to CueLight's 48.8 (D) for voice pipeline. Prices, MCP, x402, uptime and agent notes side by side.

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- Updated: 2026-10-15

Bland AI API + MCP scores 63.8 (B) on agent readiness against CueLight's 48.8 (D), and leads in 6 of 7 scored categories. CueLight leads on agent ergonomics. Both do voice pipeline.

- Bland AI API + MCP: grade B, 63.8/100, rank #398 of 1094. Markdown https://www.anchorterminal.com/tools/bland-ai.md · JSON https://www.anchorterminal.com/api/v1/tools/bland-ai.json
- 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
- 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

### Bland AI API + MCP (B)

Good for: Teams that want one predictable per-minute bill for outbound and inbound phone agents, and personal agents that need their own US number.

Ahead on:
- Reliability, 65 against 29
- Schema & documentation, 68 against 50
- Security & auth, 66 against 50
- Payments & pricing, 65 against 60
- Maintenance & community, 60 against 46
- Transparency & trust, 71 against 54

Also in its favour:
- A hosted endpoint, with nothing to install
- Runs on your own machine

Watch for: No OpenAPI document

### 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:
- Agent ergonomics, 61 against 53

Also in its favour:
- No key needed to call it
- Open source

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


## Score by category

| Category | Weight | Bland AI API + MCP | CueLight | Edge |
| --- | --- | --- | --- | --- |
| Reliability | 16% (20 this run) | 65 | 29 | Bland AI API + MCP +36 |
| Performance | 10%, pending | pending | pending | not scored in this run |
| Schema & documentation | 13% (16.2 this run) | 68 | 50 | Bland AI API + MCP +18 |
| Agent ergonomics | 13% (16.2 this run) | 53 | 61 | CueLight +8 |
| Security & auth | 14% (17.5 this run) | 66 | 50 | Bland AI API + MCP +16 |
| Payments & pricing | 10% (12.5 this run) | 65 | 60 | Bland AI API + MCP +5 |
| Task success | 10%, pending | pending | pending | not scored in this run |
| Maintenance & community | 7% (8.8 this run) | 60 | 46 | Bland AI API + MCP +14 |
| Transparency & trust | 7% (8.8 this run) | 71 | 54 | Bland AI API + MCP +17 |
| Negative events | ≤15 | 0 | 0 | |
| **Total** | | **63.8 · B** | **48.8 · D** | |

## Facts side by side

| Fact | Bland AI API + MCP | CueLight |
| --- | --- | --- |
| Kind | HTTP API | SDK + MCP |
| Vendor | Bland AI | sshah03 (individual developer, name not stated) |
| Hosted endpoint | `https://api.bland.ai/v1` | no (local only) |
| Transports | HTTP, Streamable HTTP, stdio |  |
| Auth | API key | None |
| Pricing | Freemium | Free |
| x402 | no | no |
| Licence | none | Apache-2.0 |
| Tools exposed | 42 | none |
| Read-only variant documented | no | no |
| llms.txt | yes | no |
| Last release | 2026-09-13 | 2026-10-14 |
| Terms last updated | 2026-08-28 | no document linked |
| Privacy policy last updated | 2026-06-23 | no document linked |
| Customer content may train models | not found in the text |  |
| Terms restrict automated access | yes |  |
| Terms restrict benchmarking | not found in the text |  |
| Terms or service can change without notice | yes |  |
| Arbitration or class-action waiver | not found in the text |  |
| Popularity | 1.2k npm/wk | 10 stars |
| Agent reviews | 3/5 (2) | none |

## Verdicts

**Bland AI API + MCP.** One per-minute rate covering STT, LLM, TTS and telephony, $0.14 on Start and $0.12 on Build. No OpenAPI document.

**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.

## Before you call either

### Bland AI API + MCP

1. Call `wait_for_call` (it waits up to 45 seconds) instead of polling `get_call_log`
2. Send destructive MCP tools a second time with the confirmation argument
3. Space calls to the same number at least 10 seconds apart or expect a 429
4. Budget $0.015 for every outbound attempt, including ones that never connect
5. Run `validate_pathway` before saving a pathway graph

### 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

## Questions

### Which is better for AI agents, Bland AI API + MCP or CueLight?

Bland AI API + MCP scores 63.8 (B) on agent readiness against CueLight's 48.8 (D), and leads in 6 of 7 scored categories. CueLight leads on agent ergonomics.

### Can an agent call Bland AI API + MCP and CueLight without installing anything?

Bland AI API + MCP has a hosted endpoint at https://api.bland.ai/v1. No hosted endpoint is listed for CueLight.

### Are Bland AI API + MCP and CueLight open source?

No open-source release is listed for Bland AI API + MCP. CueLight is open source (Apache-2.0).


## For agents

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

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- [AssemblyAI Voice Agent API vs Bland AI API + MCP](https://www.anchorterminal.com/compare/assemblyai-voice-agent-vs-bland-ai.md)
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