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Deepgram vs whisper-ctranslate2

A side-by-side comparison of pricing, ratings, features, pros and cons.

Deepgram
DeepgramDeepgramFreemium
DescriptionVoice AI infrastructure providing speech-to-text, text-to-speech, and voice agent APIs for developers.A Whisper CLI client compatible with the original OpenAI client, using CTranslate2 for faster inference.
Category
DeveloperDeepgramsoftcatala
Verified StatusNoNo
Last UpdatedAug 2026Aug 2026
Pricing ModelFreemiumPricing not yet verified
Free PlanNoNo
Free TrialNo
Open SourceNo
API AccessNo
Features
Flux STT for turn-taking-aware speech-to-text
Flux TTS for live-conversation text-to-speech
Unified Voice Agent API (STT + TTS + LLM)
Real-time and batch processing options
Cloud and self-hosted deployment
Free tier with up to 45 concurrent streaming connections
Reimplements OpenAI Whisper on CTranslate2/Faster-Whisper: up to 4x faster (16x batched), same accuracy
Drop-in CLI compatibility with the original OpenAI Whisper command-line tool
Speaker diarization and a VAD filter for cleaner transcription on noisy audio
Live transcription from a microphone and color-coded confidence visualization
Loads custom or fine-tuned Whisper models from a local directory
Installs via pip or a prebuilt Docker image with small/medium/large-v2 models included
CPU and GPU support across x86-64 and ARM64 hardware
Tags
speech-to-texttext-to-speechvoice-aivoice-agentsapi
whisperctranslate2clientcompatibleoriginalopenai
Review Count00
Saves00
Views591
Quality Score24/10066/100
Website StatusOnlineOnline
Websitedeepgram.comgithub.com
Social Links4 linked1 linked
ScreenshotsNoYes
Pros
Free to use

Screenshots

whisper-ctranslate2whisper-ctranslate2

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