Intervo vs Tone
Intervo
intervo.ai
Tone
trytone.aiSide by side
| Figure | Intervo | Tone |
|---|---|---|
| Price from | $129/mo | $0.09/mo |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 4 | 3 |
| Spec score · AI Voice Agents | 8.2 (#8) | 7.9 (#16) |
| Integrations | The integrations page lists Calendly, webhooks, Intercom, Google Sheets, Cal, Slack, Zapier, and a custom API, with the custom API marked Coming Soon. | Listed integrations include OpenAI, Anthropic, Google Gemini, Mistral, Llama, ElevenLabs, Cartesia, PlayHT, Deepgram, Whisper, AssemblyAI, Twilio, Telnyx, Plivo, LiveKit, HubSpot, Salesforce, Zapier, n8n, Slack, Notion, Confluence, and GoHighLevel. |
| Support | The pricing page lists community support for the self-hosted plan and professional technical support for Enterprise. | Self-host customers receive community Discord support, Cloud customers receive email and chat support, and Enterprise customers receive dedicated support with a Slack channel. |
Plans
Intervo
- Self-Hosted — Open SourceFree
- Pay as you go — Developer Plan$10, paid once
- Subscription — Business Plan$129 a month
- EnterprisePriced on request
In their own words
Intervo
Intervo is a platform for creating AI voice and chat agents for business communication, including customer support, lead qualification, reception, onboarding, automation, and internal help. Businesses can give agents context from documents, websites, or knowledge bases. A website widget lets visitors type or speak with an agent, and the documentation describes connecting agents to phone numbers through Twilio for inbound and outbound calls. Intervo says agents can use OpenAI, Claude, or Gemini models and ElevenLabs or Microsoft Azure voice engines. Listed integrations include Calendly, webhooks, Intercom, Google Sheets, Cal, Slack, and Zapier; a custom API is marked as coming soon. It runs on the web, through an API, or as a self-hosted deployment. The free self-hosted plan includes source code under the MIT License and community support. Developer costs $10, paid once, while Business costs $129 a month; the pricing page also shows yearly billing at $99 USD/month and $129 USD/month.
Tone
Tone is an open-source voice AI platform for building, deploying, and self-hosting voice agents. Agents can handle inbound or outbound calls, web widgets, or chat, combining prompts, tools, workflows, configurable models, voices, and speech-to-text providers. Its knowledge base accepts PDFs, scraped documents, Notion, and Confluence content, with chunking, embeddings, retrieval, re-ranking, citations, and custom vocabulary. A visual workflow builder supports branching, loops, human handoff, TypeScript hooks, and triggers from Zapier, REST API, or HighLevel. The test center runs simulated calls with personas, accents, and edge cases, supports parallel regression runs, and replays production calls. Observability includes interruption rate, latency, sentiment, gibberish detection, recordings, dashboards, and real-time alerts. Tone offers a TypeScript-first SDK, CLI, hosted API, and self-hosting through Docker Compose or a Kubernetes Helm chart. The Self-host plan is free. Cloud costs $0.09 per minute and includes $10 free credit with no card required; Enterprise pricing is custom.