Side by side
Fonema vs Tone
Both stand on ai voice agents. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free trial APIWeb
Fonema combines voice and text agents with a broad set of listed channels and integrations. Usage tiers are billed by the second, while telephony through Fonema carries a separate monthly line fee and country rates.
Visit Fonema
Free plan APISelf-hostedWeb
Tone combines agent building, deployment, testing, and monitoring in one voice AI platform. Choose between free self-hosting, usage-priced Cloud, or custom Enterprise terms.
Visit ToneThe facts
| Fonema | Tone | |
|---|---|---|
| Free plan | A free trial | Yes |
| Open source | Not published | Not published |
| Runs on | API, Web | API, Self-hosted, Web |
| Lowest paid plan | Call center: $0.08 a month | See the plans |
| Plans published | 6 | 3 |
| Maker | Not published | Not published |
| Website | fonema.ai | trytone.ai |
| On ai voice agents | #14 of 32 | #10 of 32 |
Fonema: what it does well
- Agents support more than 30 languages.
- Offers more than 200 regional Spanish voices.
- Includes a free agent setup and test call.
- Supports inbound and outbound calls.
What to know first
- Twilio telephony adds a $15 USD monthly line fee plus country rates.
- The free trial has no stated duration.
- Listed concurrent-call capacity is five calls.
Tone: what it does well
- Free MIT-licensed self-host plan.
- Supports inbound and outbound calls.
- Includes human handoff in workflows.
- Supports 29 languages.
- Offers Docker Compose and Helm deployment.
What to know first
- Cloud is billed at $0.09 per minute.
- Enterprise pricing is custom and not listed.
- Self-host customers receive community Discord support.