VaxVoIP Agent AI SDK vs E2X

A side-by-side comparison built from both listings. Blank cells mean the company has not given that detail; we never guess.

VaxVoIP Agent AI SDK compared with E2X
Detail	VaxVoIP Agent AI SDK	E2X
What it does	SIP-to-OpenAI gateway for building real-time multilingual AI voice agents	One API for AI Video & Image Generation
Stage	Not given	Not given
Founded	Not given	Not given
Based in	Not given	US
Pricing model	Paid	Not given
Pricing	Annual commercial licensing: 10 concurrent calls $1,480, 20 concurrent calls $2,620, 40 concurrent calls $4,420, 80 concurrent calls $6,420, 160 concurrent calls $8,860, Unlimited concurrent calls $10,680, Unlimited services and unlimited concurrent calls $16,860 (all USD, one year, contact sales)	Prepaid credits system: deposit funds via credit card or crypto ($100 deposited = $100 balance, no markups). Models priced per-request from $0.0075/request (image generation) to $0.15/second (video generation). Examples: GPT Image 2.6 Sunburst $0.015/REQUEST, Veo 3.1 Fast $0.015/SEC, Nano Banana 2.1
Key features	SIP server and IP-PBX integration OpenAI real-time speech-to-speech models Multilingual voice interaction Real-time SIP audio processing Sample source code in C#, VB.NET, and Delphi 30-day fully functional trial Simplified OpenAI integration Commercial B2B deployment licensing	Text to Image generation Text to Video generation Image to Video generation Image to Image generation Reference to Video generation Start & End Frame to Video generation Cross-provider automatic routing Single unified request schema for all models Prepaid credit-based billing Transparent per-request pricing
What makes it different	Gateway handles SIP audio bridging so developers focus on voice-agent logic Direct real-time connection between SIP calls and OpenAI speech models Eliminates complex OpenAI protocol and media integration overhead Includes working sample projects with documentation and demo videos Supports natural multilingual conversations on live calls	Up to 93% lower pricing than rival platforms One integration for all major AI models from multiple providers Automatic cross-provider routing for best price and reliability
Community votes	0	0
DR (Domain Rating by Ahrefs)	21 −3 (down) since last check	12 +1 (up) since last check
Trust Flow (Majestic)	44	14
Citation Flow (Majestic)	31	29
Referring domains (Majestic)	95	74

4 details filled in for both companies.

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