AssemblyAI records 453,591 monthly visits with -6.9% month-over-month growth and Freemium, Contact for Pricing pricing. Whisper (OpenAI) records 0 monthly visits with — growth and Free pricing.
Speech-to-text and voice intelligence APIs for developers
OpenAI's open-source speech recognition model for transcription, translation and language ID
| Dimension / Metric | | |
|---|---|---|
| Official Domain | assemblyai.com | github.com |
| Pricing Model | Freemium, Contact for Pricing | Free |
| Monthly Visits | 453.59K (453,591) | 0 (0) |
| MoM Traffic Delta | -33.48K (-6.9%) | 0 (—) |
| Primary Market & Share | 🇧🇷 Brazil (30.6%) | 🌐 Global (—) |
| Direct Visits / mo | 281.47K | 0 |
| User Rating | 4.6 | 4.8 |
| Supported Platforms | Website | Open Source |
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.
OpenAI's open-source speech recognition model for transcription, translation and language ID
One Transformer handles transcription, speech translation into English, language identification and voice activity detection, selected through special task tokens.
Choose from tiny, base, small, medium, large and turbo checkpoints, with English-only .en variants, to balance accuracy against VRAM and speed.
Multilingual checkpoints transcribe and translate dozens of languages, with automatic language detection on mixed-language audio.
Install via pip with openai-whisper and transcribe files from the terminal or from your own Python code, with ffmpeg handling audio decoding.
SpecialistEnterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
SpecialistEnterprise developer platform and API for deploying GPT-6 Astra, Sol, Luna, and realtime multimodal agents.
AI transcription and meeting notes in 150+ languages
AI transcription and meeting notes in 150+ languages
SpecialistExcels at ultra-low latency text-to-speech generation, but focuses less on comprehensive asynchronous audio intelligence and summarization.
SpecialistExcels at ultra-low latency text-to-speech generation, but focuses less on comprehensive asynchronous audio intelligence and summarization.
Turn any video or audio into text in seconds
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
SpecialistSpecializes in orchestrating complete conversational voice agent pipelines rather than raw standalone transcription APIs.
AI transcription that turns audio and video into searchable text
AI transcription that turns audio and video into searchable text
Your AI assistant for work and study.
Delivers high-accuracy speech-to-text and translation across numerous languages, but with a more streamlined feature set.
Delivers high-accuracy speech-to-text and translation across numerous languages, but with a more streamlined feature set.
Free / Open-sourceFree open-source dictation that runs speech-to-text on your own machine
Free / Open-sourceFree open-source dictation that runs speech-to-text on your own machine
Speech-to-text and audio intelligence API for production voice products
Speech-to-text and audio intelligence API for production voice products
Offers ultra-low latency speech-to-text and translation APIs geared towards real-time interactive voice applications.
Offers ultra-low latency speech-to-text and translation APIs geared towards real-time interactive voice applications.
