Can I migrate from Vapi to Open?

Yes. Most of the work is reproducing your prompt, tool list, and routing rules in Open's configuration. The carrier and CRM integrations Open ships save weeks vs. starting from scratch.

Is Open's latency competitive with Vapi?

Median first-token latency under 200ms on US/EU regions. Comparable to Vapi when both run in the same region.

Can Open use my own LLM or voice models?

Yes — voice cloning via ElevenLabs, custom voice training, and bring-your-own-model deployments are supported on enterprise plans.

Is per-minute pricing actually cheaper?

It depends on conversation length. Per-resolution pricing is usually more predictable for business use cases. We're happy to compare on real call samples.

Does Open expose the same kind of API Vapi does?

Yes — agents, tools, calls, transcripts, transfers are all in the API. The Open API is more product-shaped than infrastructure-shaped, but it's complete.

Comparison

Open vs. Vapi

Vapi is voice AI infrastructure; Open is a voice AI product. The right choice depends on whether you want to build the platform or use one.

جرّبه الحين

Open positioning: Product
Vapi positioning: Platform
Carriers ready (Open): 37+
Tools wired (Open): ~50

٠١ — نظرة عامة

Should I pick Vapi or Open?

It depends on what your team wants to own. Vapi gives you the building blocks; you assemble the agent. Open gives you the agent; you configure it. Both are real options — the answer is about your engineering appetite, not which one is 'better'.

Vapi is a well-engineered voice AI infrastructure platform. It handles the SIP gateway, the LLM orchestration, the TTS/STT, and a clean SDK to wire calls together. Developer teams love it because it's flexible — every part of the call can be customized, every model swapped, every prompt versioned in code. It's a platform you build on.

Open is a product, not a platform. It ships with the SIP layer integrated against 37+ carriers (so you join Twilio, Vonage, RingCentral, Zoom Phone, your trunk — without writing the integration), with ~50 official tool integrations (Salesforce, HubSpot, Zendesk, Stripe, Calendar, Shopify, Slack, Jira), with full observability (recording, transcript, reasoning trace, outcome tags, cost-per-call), with warm SIP REFER transfers, with PII redaction, and with SOC 2 / GDPR / HIPAA / PCI compliance. You configure agents — you don't build the platform underneath.

The right choice depends on the question your team is answering. "How do we get an AI voice agent live on our existing phone system in a week?" — Open is the shorter path. "How do we build a voice AI product as our business?" — Vapi (or Retell, or LiveKit Agents) is the right primitive.

Pricing models also differ in shape. Vapi charges per minute (LLM + TTS + STT + carrier passthrough). Open charges per resolved conversation, with carrier minutes invoiced by your carrier with no markup. For most business use cases (where conversation length varies), per-resolution pricing is more predictable.

Some teams use both: Vapi (or similar) for an experimental or highly-custom agent, Open for the production support / sales / receptionist agents that need to plug into the rest of the business. They're not in fundamental conflict.

Vapi shines at

Maximum flexibility
Every call layer (LLM, TTS, STT, SIP) is swappable. Best for teams that want to own every primitive.
Developer-first SDK
Versioned in code, programmatic agent management, deep customization. Built for engineers, not configurators.
Per-minute pricing
Pay only for the minutes you use, broken down per layer.
Lower-level control
Direct access to the audio pipeline, prompt context, and model parameters.

Open ships with

Carrier integrations done
37+ carriers (Twilio, Vonage, RingCentral, Zoom Phone, Avaya, Mitel, BT, Verizon, Orange, etc.) as first-class SIP destinations.
Tool integrations done
~50 official integrations (Salesforce, HubSpot, Zendesk, Stripe, Calendar, Shopify, Slack, Jira). No SDK assembly.
Observability and compliance done
Recording, transcripts, reasoning traces, PII redaction, SOC 2 / HIPAA / PCI. Included, not bolted on.
Per-resolution pricing
Pay per resolved conversation, not per minute. Carrier minutes stay billed by your carrier.

٠٢ — ليش يشتغل

وش يخلّي Open الحل الصح لـ Comparison

For business buyers, Open is faster to value
Days to production with your existing carrier and CRM, not quarters of platform engineering.
For platform builders, Vapi is more flexible
If your business is voice AI, you want the primitives Vapi exposes.
They aren't mutually exclusive
Some teams run Vapi for experimental agents and Open for the production ones tied to the rest of the business.
Pricing matches positioning
Vapi: per minute, layer by layer. Open: per resolved conversation, predictable per-call cost.

٠٣ — الأمان

مشفّر، مدقّق، قابل للاسترجاع

SIP فوق TLS للإشارات، و SRTP للوسائط. كل مكالمة تتسجل مع تتبّع كامل للاستنتاج. SOC 2 Type II، متوافق مع GDPR، وجاهز لـ HIPAA و PCI. مدعوم بـ ضمان استرجاع ٢ مليون دولار من Open.

٠٤ — الأسئلة الشائعة

أسئلة Open vs. Vapi، مجاوب عليها

أدلة Voice AI أكثر

Compared toOpen vs. Bland AIBland AI is a voice AI platform built for developers. Open is a voice AI product built for businesses already running a phone system.Compared toOpen vs. Retell AIRetell AI is voice AI infrastructure; Open is a voice AI product. Pick based on whether you want to build the agent or configure one.Compared toOpen vs. SynthflowSynthflow is a no-code voice AI builder for SMBs. Open is a production-grade product for businesses with existing phone systems and compliance needs.PlatformVoice AI PlatformA voice AI platform with the SIP, the tooling, the analytics, and the compliance already wired. Configure the agent — not the plumbing.Use caseAI Voice AgentA production-grade AI voice agent that runs real phone calls — inbound, outbound, and warm transfers — using your tools live, in your brand voice.Compared toOpen vs. PolyAIPolyAI is a custom-built enterprise voice AI service. Open is a self-serve productized voice agent. Different delivery models for different buyers.