Real-time speech-to-text, text-to-speech and voice agents in one API platform
Real-time speech-to-text, text-to-speech and voice agents in one API platform

12 tools like Tunk.ai, most popular first.
| Rank | Tool & Tagline | Official Domain | Monthly Visits | MoM Growth | Pricing Model | Primary Market | Rating | Compare |
|---|---|---|---|---|---|---|---|---|
| ● | Tunk.ai | tunk.ai | 0 | -3.37K (-100%) | Free Trial, Contact for Pricing | Global | 4.2 |
| Profile |
| 1 | Deepgram Voice AI | deepgram.com | 863.85K | 208.43K (+31.8%) | Free Trial | United States | 4.5 | Compare |
| 2 | Vapi | vapi.ai | 662.3K | -85.53K (-11.4%) | Freemium | United States | 4.5 | Compare |
| 3 | AssemblyAI | assemblyai.com | 453.59K | -33.48K (-6.9%) | Freemium, Contact for Pricing | Brazil | 4.6 | Compare |
| 4 | Soniox | soniox.com | 335.65K | 7.29K (+2.2%) | Paid | United States | 4.5 | Compare |
| 5 | Video SDK | videosdk.live | 125.67K | -49.58K (-28.3%) | Freemium, Paid, Contact for Pricing | United States | 4.4 | Compare |
| 6 | Speko | speko.ai | 20.95K | -1.8K (-7.9%) | Paid, Contact for Pricing | United States | 4.4 | Compare |
| 7 | Synthflow.ai | synthflow.ai | 95.54K | -7.91K (-7.6%) | Free Trial, Contact for Pricing | United States | 4.2 | Compare |
| 8 | JustCall | justcall.io | 780.29K | 82.23K (+11.8%) | Paid | United States | 4.4 | Compare |
| 9 | Gladia | gladia.io | 232.45K | 13.91K (+6.4%) | Freemium, Contact for Pricing | Brazil | 4.4 | Compare |
| 10 | Cartesia | cartesia.ai | 1.78M | 592.13K (+49.7%) | Contact for Pricing | United States | 4.4 | Compare |
| 11 | Rev AI | rev.ai | 50.71K | -11.42K (-18.4%) | Free Trial, Paid | United States | 4.4 | Compare |
| 12 | Gradium | gradium.ai | 126.42K | 71.15K (+128.7%) | Freemium, Contact for Pricing | France | 4.5 | Compare |
Real-time speech-to-text, text-to-speech and voice agents in one API platform
Real-time speech-to-text, text-to-speech and voice agents in one API platform
Build, test, and deploy production-grade voice AI agents over API

Speech-to-text and voice intelligence APIs for developers

One speech AI API for recognition, generation, and translation in 60+ languages
One speech AI API for recognition, generation, and translation in 60+ languages

Low-latency video, voice and AI-agent APIs for developers
Low-latency video, voice and AI-agent APIs for developers

The provider-neutral router and platform for voice AI agents

Enterprise AI voice agents that work inside your phone system

AI communication platform for sales and support teams

Speech-to-text and audio intelligence API for production voice products
Speech-to-text and audio intelligence API for production voice products

Real-time voice AI models and agents you can build on

Developer-first speech-to-text API with industry-leading accuracy

Real-time voice AI APIs with 50 ms to first audio
Real-time voice AI APIs with 50 ms to first audio