StablePhone

Communication

AI phone calls and phone number management.

61.2
out of 100

Low accuracy (3%). Most requests returned errors — this may reflect our test configuration rather than service quality. We're working to improve coverage. Very reliable — 10/10 requests got a response. Median response time: 703ms (p95: 1229ms).

Last tested: 3/19/2026, 5:50:44 PM

What AI models say

GPT-4o-mini

“All 10 API requests returned errors, with an average response time of 753ms and response quality at 3%.”

Haiku

“All 10 requests failed with extremely poor response quality despite 753ms average latency.”

Accuracy (40%)
3.0
Reliability (30%)
100.0
Latency (20%)
100.0
Cost Efficiency (10%)
100.0

Test Examples

Real requests we sent and the responses we received.

Requesting a phone call with an empty content string.

POST /api/calladversarial363ms
30%

HTTP 400

Requesting a phone call with very short content.

POST /api/calledge678ms
0%

HTTP 500

Requesting a phone call to inquire about their favorite hobbies.

POST /api/calltypical703ms
0%

HTTP 500

Requesting a phone call to ask for feedback.

POST /api/calltypical758ms
0%

HTTP 500

Service Details

Endpoint: https://stablephone.dev
Status: active
Discovered: 3/18/2026
Tests run: 10
Last tested: 3/19/2026

Test History

3/19/2026, 5:50:32 PM
score: 3%p50: 703ms
3/19/2026, 4:30:16 PM
score: 3%p50: 622ms
3/19/2026, 3:59:41 PM
score: 3%p50: 641ms
3/19/2026, 12:30:11 AM
score: 3%p50: 637ms

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MPPrimo rating for StablePhone<a href="https://mpprimo.com/service/978d1e40-c17a-4c96-a9e9-0b28bffbfbf8"><img src="https://mpprimo.com/api/badge/978d1e40-c17a-4c96-a9e9-0b28bffbfbf8" alt="MPPrimo rating"></a>
How do we test? Read our methodology.