Is SIPHON really free?

Yes. SIPHON is 100% open-source under the Apache 2.0 license. You never pay us a platform fee. You only pay for your own infrastructure and the AI/Telephony providers you choose (e.g., OpenAI, Twilio). Zero markups, zero per-minute fees.

How much can I save compared to Vapi, Retell, or Bland?

Managed platforms charge $0.05-$0.30/min on top of your AI provider costs. With SIPHON, you pay only direct provider costs (typically $0.01-$0.03/min). For 10,000 minutes/month, that's $500-$3,000 in savings.

Who owns my call data with SIPHON?

You do. SIPHON runs on your infrastructure. All recordings, transcripts, and metadata stay in your storage (S3, MongoDB, SQL, etc.). No third-party platform has access to your customer conversations.

Do I need to be a VoIP expert?

Not at all. SIPHON abstracts away the complex SIP signaling and media handling. If you're comfortable with Python, you can build production-grade voice agents.

Which AI models can I use with SIPHON?

You have total freedom. SIPHON supports OpenAI, Anthropic, Gemini, Groq, DeepSeek, Cerebras, and open-source models. You can swap providers with a single config change - no vendor lock-in.

How does SIPHON handle latency?

SIPHON is optimized for sub-500ms latency using WebRTC (LiveKit). By running on your infrastructure and choosing fast models (Groq, Cerebras, GPT-4o), you achieve natural conversation speeds without platform routing overhead.

Can I scale SIPHON to thousands of calls?

Yes. SIPHON is built on LiveKit, which powers massive-scale streaming. The worker architecture allows horizontal scaling to handle any call volume on your infrastructure.

Is SIPHON HIPAA/SOC2 compliant?

SIPHON is a framework that runs on your infrastructure. Compliance depends on your deployment. Since you control all data and infrastructure, you can deploy SIPHON in HIPAA-compliant or air-gapped environments - something not possible with managed platforms.

The Sovereign Voice Manifesto

Voice AI is broken.

Not because the models are bad —
but because access is rationed by wrappers.

The Problem

Today's "Voice AI platforms" are toll booths.

They:

Wrap public APIs (OpenAI, Deepgram, Cartesia)
Add minimal orchestration
Charge per-minute rent
Lock you into black boxes
Sit between you and your users' conversations

At scale, this is insane.

You pay:

For your LLM
For your STT
For your TTS
For your SIP trunk
And again — just to connect them

This is not innovation.
It's rent-seeking.

The Cost Nobody Talks About

Voice agents hear everything:

Medical data
Financial details
Sales conversations
Private emotions
Business secrets

The Questions You Should Ask

Where do your calls go?
Who stores the recordings?
Who can access the transcripts?
What happens to the data after the call?

"Trust us" is not a security model.

When you route calls through a managed platform:

You lose data sovereignty
You accept their terms
You hope they're secured
You pay for the privilege

What We Believe

Ownership

You should own your calls — not rent access to them
You should own your infrastructure — not depend on someone else's
You should pay for compute — not permission

Technical Excellence

Latency matters — and it's determined by your model choices, not our infrastructure
Interruptions matter — Siphon gives you the controls, you tune them
Python developers shouldn't be forced into Node or Go to ship voice

Transparency

Open source beats black boxes
Direct integrations beat wrappers
Standards beat vendor lock-in

What Siphon Stands For

Siphon is Sovereign Voice AI.

🔓 Open Source	Apache 2.0 license — inspect, modify, deploy
🏠 Your Infrastructure	Runs on your cloud, your servers, your LiveKit
💰 No Platform Fees	Pay your AI providers directly, no markup
🔒 No Hidden Routing	Your calls go from SIP → LiveKit → your agent
🔑 No Lock-In	Swap LLMs, STT, TTS providers with config changes

Build Agents That Speak For You

Not for a platform.

Siphon is not the easiest path.
It is the right one.

If you want convenience, buy a wrapper.
If you want control, use Siphon.

Join the Movement

Siphon is more than a framework.
It's a statement.

The future of voice AI is sovereign.

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