Skip to content
The Agents Index
Sign inSubmit an agent

sipgate flow

Claim

Is sipgate flow yours?

Claiming is free. You get this page's reader numbers and can edit its facts.

Claim this listing

You confirm it with an email at flow.sipgate.io.

sipgate flow is a real-time voice and telephony API that connects inbound and outbound phone calls to an AI agent you write yourself.

The six
  • API accessYes
  • Free tierNo
  • MCP serverNot stated
  • Own API keyPartly
  • Open sourcePartly
  • Self-hostedPartly
Price
Price on request
Screenshot of sipgate flowCaptured · theagentsindex.com
Visit sipgate flow CompareFind alternatives

Checked · 5 facts changed · How we check · Editorial policy

Changed since our last check

  • Runs autonomously: now Partly. It was Yes when we checked on .
  • Open models: now Partly. It was Yes when we checked on .
  • In a browser: now Yes. It was Partly when we checked on .
  • Self-hosted: now Partly. It was No when we checked on .
  • Certifications: now Yes. It was Partly when we checked on .

The facts, with their sources

What it does

Done-for-you service
NoThis is software you integrate yourself: sipgate supplies the voice layer while you write and host the conversation logic, with no build or run service offered.It handles the telephony, speech-to-text, and text-to-speech, so you keep full control over your conversation logic and your choice of LLMflow.sipgate.io/faq.html

How much it does unattended

Runs autonomously
PartlyFlow runs a whole call unattended (greeting, transcription, speech, transfer, hangup), but every decision comes from your application, so autonomy depends on the logic you supply.Was Yes before our last check.Your application owns the conversation logic and can call any LLM you choose.flow.sipgate.io/faq.html
Multi-agent
PartlyOne flow owns a call; coordination between agents happens by transferring the call with context passing rather than by any orchestration framework.SSML für Feintuning, Weiterleitungen mit Context-Passing, Warm Handover geht alles über simple JSON-Befehle.sipgate.de/flow
Agent permissions
PartlyInbound handling is open once a webhook is configured, but outbound dialling is withheld until sipgate support reviews the account, which is a real gate on what the agent may initiate.Outbound calls are only available upon request and after a positive review by sipgate support. This restriction exists to prevent fraud and spam.flow.sipgate.io/api/guides/outbound-cal…

Which models it runs on

Claude
YesClaude is named as a model you integrate behind the voice layer; sipgate does not resell it, your own application makes the call.When integrating Large Language Models (LLMs) like OpenAI's GPT, Anthropic's Claude, or similar services with sipgate flowflow.sipgate.io/api/guides/streaming-ll…
GPT
YesGPT is named in the streaming guide as a model you wire behind the webhook; inference is yours to arrange and pay for.flow.sipgate.io/api/guides/streaming-ll…
Open models
PartlyNothing stops an open-weight model being used because the LLM lives in your application, but the vendor never names one or hosts any model itself.Was Yes before our last check.flow.sipgate.io/faq.html
Model choice
YesModel choice is entirely the buyer's: flow carries audio and text only, and states plainly that you keep your choice of LLM.so you keep full control over your conversation logic and your choice of LLM — sipgate flow gives your existing AI a voice on the phoneflow.sipgate.io

Where you use it

On the command line
NoThe docs enumerate every integration path (HTTP webhook, WebSocket, TypeScript SDK) and none of them is a terminal tool.HTTP webhooks for serverless, WebSocket for real-time, or use our TypeScript SDK for convenience.flow.sipgate.io
In a browser
YesA hosted Flow dashboard exists for configuration (webhook URL, WebSocket URL and shared secret), though the docs never show it as a build or monitoring console.Was Partly before our last check.Configure: Add your webhook URL in the Flow dashboardflow.sipgate.io/api/quick-start.html

Whose machine it runs on

Self-hosted
PartlyYour half (webhook server and LLM) runs anywhere you like, but the telephony, transcription and speech synthesis run on sipgate's own EU infrastructure with no self-hosted option documented.Was No before our last check.sipgate flow runs on EU infrastructure operated by sipgate in Germany, is ISO 27001-certified, and is built to meet GDPR and EU AI Act requirementsflow.sipgate.io/faq.html
Open source
PartlyOnly the client is open: the first-party TypeScript SDK is published under Apache-2.0, while the voice and telephony service behind it is closed and hosted.License: Apache-2.0npmjs.com/package/@sipgate/ai-flow-sdk

What it costs to run

How it meters
YesBilling is per talk minute: four prepaid minute packages, each with a published per-extra-minute rate and no base fee, cancellable monthly.Small 2.500 Minuten 249,95 € 9,9 ctsipgate.de/flow
Free tier
NoThe published package table is a closed list of four paid tiers starting at 249,95 €; no free or trial Flow tier appears anywhere on it.Paket Inkludierte Minuten Paketpreis Jede weitere Minute in EUR Small 2.500 Minuten 249,95 € 9,9 ctsipgate.de/flow
API access
YesThe product is nothing but an API: plain JSON events over HTTP webhooks or WebSocket, plus a REST endpoint to place outbound calls, usable from any language.The API uses plain JSON over HTTP webhooks or WebSocket, with examples in Python, Node.js, Go, and Ruby.flow.sipgate.io/faq.html
Bring your own key
PartlyInference is bring-your-own by design (your keys, your provider, your bill), while speech synthesis and transcription run through providers sipgate operates rather than accounts you supply.flow.sipgate.io/faq.html

Buying it for a team

A company can buy it
YesSold business-to-business by a German telco, with minute packages priced net of VAT and an explicitly multi-tenant offer for resellers.Sie wollen Ihren Kunden Voice-Funktionen anbieten? Flow ist der richtige Telefoniepartner dafür. Multi-Tenant-fähig, skalierbar und ganz einfach…sipgate.de/flow
Seat model
NoThere are no seats and no per-user floor: the rate card meters talk minutes only, with no base fee and monthly cancellation.ohne Grundgebühr • minutengenaue Abrechnung • monatlich kündbarsipgate.de/flow
Pooled budget
YesOne account-level minute allowance covers every call and every flow; minutes are billed to the second, with overage at the package's published rate.Medium 10.000 Minuten 899,95 € 8,9 ctsipgate.de/flow
Admin controls
PartlyThe sipgate account separates admin from restricted users, which governs configuration rights, not a policy engine limiting what the agent may do mid-call.Die sipgate Dienste ermöglichen es, eingerichtete Benutzer:innen zwischen Admin-Usern mit weitreichenden Rechten und normalen Usern mit…sipgate.de/sicherheit-datenschutz
Single sign-on
PartlyCustomers who already run an SSO provider can enforce SSO login for all their users; Google and Apple sign-in is open to everyone, and neither SAML nor OIDC is named.Kund:innen, die einen SSO-Anbieter nutzen, können die SSO-basierte Anmeldung für alle ihre User einrichten.sipgate.de/sicherheit-datenschutz

What happens to your code

Opt out of training
PartlyUnder AI Security sipgate states model training on customer data is contractually excluded and processing stays in Europe, but the sentence covers its own ChatGPT usage, not Flow's speech subprocessors specifically.Eine weitere Nutzung der Daten, zum Beispiel für Machine Learning durch OpenAI, ist vertraglich ausgeschlossen.sipgate.de/sicherheit-datenschutz
Data residency
YesProcessing is stated to sit on EU infrastructure operated by sipgate in Germany, positioned explicitly as the alternative to US-hosted voice AI providers.flow.sipgate.io/faq.html
Getting out
PartlyDeletion is documented and self-service under the data-processing agreement, but no data-export path is published and nothing states whether unused package minutes roll over.Werden Daten im Auftrag der Kund:innen gespeichert, greifen die Regelungen des Vertrags zur Verarbeitung von Daten im Auftrag. In diesen Fällen…sipgate.de/sicherheit-datenschutz
Certifications
YesISO 27001 certification is claimed alongside GDPR and EU AI Act readiness, though SOC 2 is never mentioned and no certificate or audit report is linked from the site.Was Partly before our last check.is ISO 27001-certified, and is built to meet GDPR and EU AI Act requirements — a key difference from US-based voice AI providersflow.sipgate.io/faq.html

Works with

  • Claude
  • GPT
  • Partly
    Open models

For AI agents

API
Yes
AdYour company across The Agents IndexAdvertise here

Filed under

Agent tools & infrastructureVoice AI APIsAPIAutonomousClaudeGPTOpen models

Sources and updates

Last changed

Sources10

The Agents Index in AI answers1 of 1

  • PerplexityCites The Agents IndexAsked sipgate flow alternatives on Other sources: flow.sipgate.io, sprintcx.net, toolsplorer.com, capterra.com.de, appvizer.com, softwaresuggest.com

Updates2

  • Capabilities · Free tier · Price · Terms
  • Capabilities · Free tier · Price · Terms

Is this yours? Claim it free and edit it in your dashboard, or feature it in Agent tools & infrastructure.

The digestFree

Which agents actually ship.

New agents and articles, by email, at most once a week.

Last issue · No. 1 · 13 October 2026Devin vs Claude Code: Which Should You Pick?

183 agents trackedOne-click unsubscribe