Gradium: Focuses on ultra-low latency real-time voice APIs, though with a smaller ecosystem than Gladia. Gladia records 232,451 monthly visits with +6.4% month-over-month growth and Freemium, Contact for Pricing pricing. Gradium records 126,416 monthly visits with +128.7% growth and Freemium, Contact for Pricing pricing.
Speech-to-text and audio intelligence API for production voice products
Real-time voice AI APIs with 50 ms to first audio
| Dimension / Metric | | |
|---|---|---|
| Official Domain | gladia.io | gradium.ai |
| Pricing Model | Freemium, Contact for Pricing | Freemium, Contact for Pricing |
| Monthly Visits | 232.45K (232,451) | 126.42K (126,416) |
| MoM Traffic Delta | +13.91K (+6.4%) | +71.15K (+128.7%) |
| Primary Market & Share | 🇧🇷 Brazil (22.1%) | 🇫🇷 France (26.5%) |
| Direct Visits / mo | 128.52K | 27.16K |
| User Rating | 4.4 | 4.5 |
| Supported Platforms | Website | Website |
Speech-to-text and audio intelligence API for production voice products
Stream audio over WebSocket for live captioning or submit files via REST for batch transcription, supporting MP3, WAV, FLAC, Opus, and most other formats.
Automatic, accent-sensitive language detection across 100+ languages, including code-switching for conversations that move between languages mid-sentence.
Speaker diarization, named entity recognition, PII redaction, sentiment analysis, and summarization, each billed only when you enable it.
Feed transcripts directly into a large language model, either Gladia-hosted or a model you bring yourself (BYOM), to generate summaries and structured outputs.
Real-time voice AI APIs with 50 ms to first audio
Text-to-speech, speech-to-text, and live speech-to-speech translation reach roughly 50 ms to first audio, tuned for conversational agents rather than batch processing.
Clone a voice from a short sample for everyday use, move up to pro cloning for production quality, or generate a brand-new voice from a text description.
WebSocket streaming, Python and Rust SDKs, custom vocabulary, semantic VAD, and code-switching support make integration straightforward for agent builders.
Phonon is Gradium's openly available TTS model that runs on-device for offline or privacy-sensitive deployments.
SpecialistProvides Whisper via API for robust speech-to-text, but lacks specialized real-time streaming audio intelligence pipelines.
SpecialistProvides Whisper via API for robust speech-to-text, but lacks specialized real-time streaming audio intelligence pipelines.
AI audio platform for speech, agents, music and dubbing
Free / Open-sourceStudio-grade AI text to speech and voice cloning
Ultra-fast AI inference on the LPU and LPX platform
Real-time voice AI models and agents you can build on
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
Offers cost-effective batch transcription APIs powered by distributed cloud hardware rather than dedicated streaming infrastructure.
Offers cost-effective batch transcription APIs powered by distributed cloud hardware rather than dedicated streaming infrastructure.
SpecialistBuild, test, and deploy production-grade voice AI agents over API
Delivers comprehensive audio intelligence and transcription APIs, though Gladia often excels at speed and multilingual support.
Delivers comprehensive audio intelligence and transcription APIs, though Gladia often excels at speed and multilingual support.
Clone voice, control emotion, and create lifelike speech.
Clone voice, control emotion, and create lifelike speech.
One speech AI API for recognition, generation, and translation in 60+ languages
One speech AI API for recognition, generation, and translation in 60+ languages
Delivers real-time speech-to-text with emotional intelligence detection, though on a newer platform.
Delivers real-time speech-to-text with emotional intelligence detection, though on a newer platform.
