Gladia: Provides robust multilingual transcription and audio intelligence APIs with a strong focus on developer-friendly infrastructure. AssemblyAI records 453,591 monthly visits with -6.9% month-over-month growth and Freemium, Contact for Pricing pricing. Gladia records 232,451 monthly visits with +6.4% growth and Freemium, Contact for Pricing pricing.
Speech-to-text and voice intelligence APIs for developers
Speech-to-text and audio intelligence API for production voice products
| Dimension / Metric | | |
|---|---|---|
| Official Domain | assemblyai.com | gladia.io |
| Pricing Model | Freemium, Contact for Pricing | Freemium, Contact for Pricing |
| Monthly Visits | 453.59K (453,591) | 232.45K (232,451) |
| MoM Traffic Delta | -33.48K (-6.9%) | +13.91K (+6.4%) |
| Primary Market & Share | 🇧🇷 Brazil (30.6%) | 🇧🇷 Brazil (22.1%) |
| Direct Visits / mo | 281.47K | 128.52K |
| User Rating | 4.6 | 4.4 |
| Supported Platforms | Website | Website |
Speech-to-text and voice intelligence APIs for developers
Choose pre-recorded transcription for files, a realtime API for live streams and voice agents, or a synchronous endpoint for short clips and dictation.
Layer summarization, sentiment, topic detection, PII redaction, content moderation and guardrails onto transcripts without building your own models.
AssemblyAI-TTS-1 is trained on real phone calls for natural, low-latency speech, targeted at IVR and voice-agent use cases.
Flagship models emphasise exact transcription, speaker labels and native code-switching across many languages, supported by published benchmarks.
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.
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.
Specializes in ultra-low latency streaming voice infrastructure, though heavily optimized for voice synthesis.
Specializes in ultra-low latency streaming voice infrastructure, though heavily optimized for voice synthesis.
Provides ultra-fast, enterprise-grade real-time speech-to-text and voice AI APIs, but with different pricing tiers.
Provides ultra-fast, enterprise-grade real-time speech-to-text and voice AI APIs, but with different pricing tiers.
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.
SpecialistSpecializes in orchestrating complete conversational voice agent pipelines rather than raw standalone transcription APIs.
Offers highly accurate real-time speech recognition and translation APIs, but features distinct developer tooling.
Offers highly accurate real-time speech recognition and translation APIs, but features distinct developer tooling.
Focuses on ultra-low latency real-time voice APIs, though with a smaller ecosystem than Gladia.
Focuses on ultra-low latency real-time voice APIs, though with a smaller ecosystem than Gladia.
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.
SpecialistB2B AI audio models for stem separation, transcription, mastering, and voice processing
SpecialistB2B AI audio models for stem separation, transcription, mastering, and voice processing
Provides reliable enterprise speech-to-text and transcription APIs, but lacks some of Gladia's newer real-time audio intelligence models.
Provides reliable enterprise speech-to-text and transcription APIs, but lacks some of Gladia's newer real-time audio intelligence models.
Provides multi-language transcription APIs, but lacks Gladia's breadth of advanced audio analytics.
Provides multi-language transcription APIs, but lacks Gladia's breadth of advanced audio analytics.
Offers straightforward multilingual speech-to-text APIs, but with fewer advanced audio intelligence features.
Offers straightforward multilingual speech-to-text APIs, but with fewer advanced audio intelligence features.
