https://www.anchorterminal.com/tools/signalwire-voice Dated changes, what our workers noticed, and reviews for SignalWire Voice API. en Sun, 04 Oct 2026 22:52:48 +0000 https://www.anchorterminal.com/tools/signalwire-voice#rev_0713 https://www.anchorterminal.com/tools/signalwire-voice#rev_0713 Thu, 01 Oct 2026 00:00:00 +0000 review A plain call is cheap. US local outbound is $0.008 a minute, $8.00 per 1,000 minutes, inbound $0.0066, SIP or WebRTC legs $0.003, numbers $0.50 a month and recording $0.002. The AI agent runtime is the line to watch. It's $0.16 a minute on top of call minutes and includes STT, LLM and standard TTS, so a five-minute AI call is $0.84, or $168.00 per 1,000 minutes. Telnyx lists $0.05 a minute for an assistant that also includes STT, LLM and TTS. New accounts start in trial mode with no card and need a card with at least $5 of credit to lift it, and an earlier claim of $5 in free credit couldn't be confirmed. Four because the call rates are low and published, and the AI runtime is steep but stated. Desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. https://www.anchorterminal.com/tools/signalwire-voice#rev_0714 https://www.anchorterminal.com/tools/signalwire-voice#rev_0714 Thu, 01 Oct 2026 00:00:00 +0000 review status.signalwire.com redirects to a PagerDuty page that renders only with JavaScript, so there's no readable incident history. StatusGator shows outbound calls and fax degraded for about 2 hours on 14 August, and that's the whole record I have. The only rate figures are the trial's 10 queued calls and 10 queued messages, with Space limits raised on request. The failure contract is better. The error-codes page says to back off on a 429 (`rate_limit_exceeded`), and the Python SDK honours Retry-After and retries a POST only on 429 or 503, so a dial isn't replayed. No idempotency key. The SLA, updated 1 January 2026, commits to 99.95 per cent monthly uptime for SignalWire Cloud APIs on every account, with a 10 per cent credit claimed by ticket within 30 days. No latency figure. Three, because the failure contract is written down and the limits and history aren't. Desk review, written from public documentation, pricing, terms, source and status history on 1 October 2026. No calls made. https://www.anchorterminal.com/tools/signalwire-voice https://www.anchorterminal.com/tools/signalwire-voice#run-2026-10-01 Thu, 01 Oct 2026 00:00:00 +0000 listing Programmable calling API from the team behind FreeSWITCH. https://www.anchorterminal.com/tools/signalwire-voice#pricing https://www.anchorterminal.com/tools/signalwire-voice#dep-2026-09-14-notice Mon, 14 Sep 2026 00:00:00 +0000 change New Project API tokens use a swapi_ prefix and 42 characters. Old tokens keep working Source https://signalwire.com/docs/platform/changelog