Tone vs Yellow.ai
Tone
trytone.ai
Yellow.ai
yellow.aiSide by side
| Figure | Tone | Yellow.ai |
|---|---|---|
| Price from | $0.09/mo | Free |
| Free plan | Yes | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | — |
| Plans published | 3 | 5 |
| Spec score · AI Voice Agents | 7.9 (#16) | 8.2 (#10) |
| Headquarters | Bengaluru and San Francisco | San Mateo, California, United States |
| Integrations | 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. | Yellow.ai advertises more than 150 prebuilt enterprise integrations, including Salesforce, Zendesk, Genesys and NICE. |
| Knowledge base | Tone ingests PDFs, scraped documents, Notion, and Confluence content and provides chunking, embeddings, retrieval, re-ranking, citations, and custom vocabulary. | Yes |
| Self-hosting | Tone can be started with Docker Compose and includes a Kubernetes Helm chart, with Postgres, Redis, and ClickHouse in the example stack. | The public documentation describes Studio and flows running on cloud.yellow.ai and does not document a self-hosted deployment option. |
| What it does | Tone is an open-source voice AI platform for building, deploying, and self-hosting voice agents. | Yellow.ai provides an enterprise agentic AI platform for automating customer and employee interactions across chat, voice, email and messaging channels. |
Plans
Yellow.ai
- FreeFree
- EnterprisePrice not published
- EnterprisePriced on request
- FreemiumFree
- PremiumPriced on request
In their own words
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.