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About

ThunderPhone is a full-stack voice AI platform built to handle real-world phone calls with high accuracy, strong instruction following, and natural conversation. It fuses multiple transcripts with direct audio-to-LLM input so that addresses, spellings, accents, background noise, and mumbled speech are less likely to turn into wrong answers. Agents can place and receive calls, run bulk outbound campaigns with pacing and retries, operate over real telephony or inside websites and apps, and communicate in more than 40 languages with support for accents, mixed-language calls, and mid-conversation language switching. It handles interruptions, backchannels, cross-talk, voicemail, screeners, keypad input, warm and cold transfers, and human handoffs while preserving context. Built-in retrieval lets agents answer from uploaded documents, while live supervision allows operators to watch calls and whisper guidance to the AI.

About

fonio is an AI phone assistant that answers calls around the clock and handles conversations like a human employee. It can receive calls, understand each caller’s request, answer common questions, collect structured information, forward urgent or specialized inquiries, schedule appointments, and send transcripts or callback notes when staff are unavailable. Businesses can define the assistant’s voice, language, welcome message, in-call behavior, escalation rules, and post-call workflows without coding. fonio can handle multiple calls at once, helping teams avoid missed calls and long hold times during busy periods. Its multilingual assistant supports more than 35 languages, automatically recognizes the caller’s language, responds appropriately, and can switch languages during a conversation. It connects with calendar tools, CRMs, databases, and internal systems through native integrations and APIs, allowing it to check availability, retrieve information, write data back, etc.

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Platforms Supported

Windows
Mac
Linux
Cloud
On-Premises
iPhone
iPad
Android
Chromebook

Audience

Businesses, developers, and operations teams wanting to automate inbound and outbound phone calls with accurate, multilingual AI agents that integrate with existing workflows

Audience

Companies that need to answer calls, schedule visits, and route urgent cases without keeping receptionists constantly on duty

Support

Phone Support
24/7 Live Support
Online

Support

Phone Support
24/7 Live Support
Online

API

Offers API

API

Offers API

Screenshots and Videos

Screenshots and Videos

Pricing

2¢ per minute
Free Version
Free Trial

Pricing

€99 per month
Free Version
Free Trial

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Reviews/Ratings

Overall 0.0 / 5
ease 0.0 / 5
features 0.0 / 5
design 0.0 / 5
support 0.0 / 5

This software hasn't been reviewed yet. Be the first to provide a review:

Review this Software

Training

Documentation
Webinars
Live Online
In Person

Training

Documentation
Webinars
Live Online
In Person

Company Information

ThunderPhone
United States
thunderphone.com

Company Information

fonio
Founded: 2024
Austria
www.fonio.ai/

Alternatives

Alternatives

Categories

Categories

Integrations

Cal.com
Calendly
HubSpot CRM
Mailchimp
Make
Notion
Salesforce
Slack
Trello
WhatsApp
monday CRM
n8n

Integrations

Cal.com
Calendly
HubSpot CRM
Mailchimp
Make
Notion
Salesforce
Slack
Trello
WhatsApp
monday CRM
n8n
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