Fonema vs Tone
Fonema
fonema.ai
Tone
trytone.aiSide by side
| Figure | Fonema | Tone |
|---|---|---|
| Price from | $0.08/mo | $0.09/mo |
| Free plan | — | Yes |
| Free trial | Yes | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | — | Yes |
| Plans published | 6 | 3 |
| Spec score · AI Voice Agents | 8.3 (#7) | 7.9 (#16) |
| Headquarters | Mexico City, Mexico | Bengaluru and San Francisco |
| Integrations | The company lists HubSpot, Zoho CRM, Salesforce, Google Calendar, and an API as 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. |
| Support | Fonema provides Spanish-language accompaniment and lists [email protected] for sales contact. | 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
Fonema
- Call center$0.08 a month
- Call center growth$0.08 a month
- Scale$0.11 a month
- Growth$0.13 a month
- Pro$0.13 a month
- Starter$0.14 a month
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.