Ultravox vs Voltagent
A side-by-side look at Ultravox vs Voltagent: pricing, free plans and features, taken from each official website. Prices change often, so check the linked sources.
| Feature | Ultravox | Voltagent |
|---|---|---|
| Type | Tool · Voice & Audio | Tool · Voice & Audio |
| Made by | unknown | unknown |
| What it does | A fast multimodal LLM for real-time voice | AI Agent Engineering Platform built on an Open Source TypeScript AI Agent Framework |
| Pricing model | Free | Free |
| Free tier | unknown | unknown |
| Current prices | unknown | unknown |
| Modalities | unknown | unknown |
| Key features | ai llm slm speech | agents ai ai-agents ai-agents-framework |
| Context window | unknown | unknown |
| API | unknown | unknown |
| License | Proprietary service | Proprietary service |
| Web app | unknown | unknown |
| Mobile apps | unknown | unknown |
| Desktop app | unknown | unknown |
| Links | Website ↗Deekoya listing | Website ↗Deekoya listing |
Ultravox vs Voltagent: pricing and features
Ultravox
Ultravox is a real-time voice AI infrastructure layer that enables fast, natural, and scalable voice agents. It provides a unified stack for audio intelligence, allowing developers to build agents that can speak, listen, and interact in real time.
Pricing
The official site lists a free tier that includes the first 30 minutes of calls at no charge, then charges $0.05 per minute (including TTS) for usage beyond the free minutes. A Pay-As-You-Go plan is $0/month with the same $0.05 per minute rate, and a Pro plan is $100/month (billed yearly). Pricing details were read from the official site.
Key features
- Developer-friendly REST APIs for easy integration
- Powerful SDKs for web and mobile platforms
- Built-in tools to help build and scale voice agents
- Telephony support with integrations to major providers
- Fast, low-latency processing for real-time conversations
- Unified stack that handles speech without separate transcription
Source: official homepage, official pricing page · checked 2026-10-26
Voltagent
VoltAgent is an open-source, observability-first TypeScript framework for building AI agents. It provides tools for agent orchestration, retrieval-augmented generation, and integration with dozens of applications.
Pricing
The official site lists three paid tiers plus a free option. The Developer Plan is $0 /month with 1 seat, 1 prompt and 10 RAG requests per minute. The Core Plan costs $50 /month (14-day free trial) and includes up to 3 seats, unlimited prompts, and 100 RAG requests per minute; extra usage is billed at $5 per 1,000 AG requests. The Pro Plan costs $250 /month (14-day free trial) and includes up to 20 seats plus all Core features; exceeding limits incurs a $10 charge for every additional 5,000 traces. The framework itself is free forever and open source, as stated on the official site.
Key features
- Observability-first framework
- Open source TypeScript AI agent framework
- Supervisor agent orchestration
- Accurate, context-aware responses
- Connects to 40+ apps
- Supports Retrieval-Augmented Generation (RAG)
Source: official homepage, official pricing page · checked 2026-10-26
FAQ
Which is free, Ultravox vs Voltagent?
Ultravox: has a free plan or trial per its official site; Voltagent: has a free plan or trial per its official site.
What is the difference between Ultravox vs Voltagent?
Ultravox: Ultravox is a real-time voice AI infrastructure layer that enables fast, natural, and scalable voice agents. Voltagent: VoltAgent is an open-source, observability-first TypeScript framework for building AI agents.