Comparison
| Tool | Price from | Free plan | Category |
|---|---|---|---|
 Deepgram | 0.0048 USD/mo | trial | APIs & models |
 AssemblyAI | not listed | ? | APIs & models |
 Cartesia | 5 USD/mo | yes | APIs & models |
 LocalAI | not listed | yes | APIs & models |
 Lingvanex | not listed | ? | APIs & models |
 Hume AI | not listed | ? | APIs & models |
 Google AI Studio | 0,75 USD | ? | APIs & models |
 OpenAI Platform | 0,10 USD | ? | APIs & models |
 Modulate | 0.025 USD | ? | APIs & models |
Each alternative in short
1. AssemblyAI
Speech-to-text and speech understanding API models for developers building voice features into apps, agents and call tools.
The vendor does not state this clearly on the homepage or pricing page.
2. Cartesia
Real-time text-to-speech, speech-to-text and voice agent API for developers building fast, live voice conversations.
Yes, there is a free plan. Free plan: 20K credits per month, $1 prepaid agent dollars per month, access to Text to Speech and Speech to Text.
3. LocalAI
Open source runtime that runs LLMs, voice, vision, image, video and agent models locally on any hardware, including CPU-only machines.
Yes, there is a free plan. Open source under the MIT license; the software itself is free to install and run.
4. Lingvanex
Machine translation and speech recognition software, on-premise or via API, for businesses needing private, large-volume translation in 100+ languages.
The vendor does not state this clearly on the homepage or pricing page.
5. Hume AI
Evaluation and improvement platform for voice AI: finds failing conversations, diagnoses causes and measures expression, for AI labs and enterprises.
The vendor does not state this clearly on the homepage or pricing page.
6. Google AI Studio
Browser-based workspace for developers to prototype with Gemini and other Google AI models, then move the same work to production via the Gemini API.
The vendor does not state this clearly on the homepage or pricing page.
7. OpenAI Platform
Developer platform for building applications with the OpenAI API, aimed at software developers.
The vendor does not state this clearly on the homepage or pricing page.
8. Modulate
Audio-native voice AI API for transcription, deepfake and emotion detection, and voice moderation, used by businesses and gaming platforms.
The vendor does not state this clearly on the homepage or pricing page.
FAQ
What is the best alternative to Deepgram?
The most popular option in the same category is AssemblyAI. See the comparison table above.