// category · speech-audio
Speech and audio APIs unlock voice-driven experiences by providing robust speech to text API and text to speech capabilities that integrate seamlessly into any application. These endpoints convert spoken language into accurate transcripts and transform written content into natural-sounding audio, supporting dozens of languages and regional accents out of the box.
Advanced speech to text APIs offer real-time streaming transcription, speaker diarization, punctuation restoration, and custom vocabulary support for domain-specific terminology. On the synthesis side, modern text to speech APIs deliver lifelike voices with emotional expressiveness, adjustable speaking rates, and SSML support for precise pronunciation and prosody control.
These APIs power everything from voice assistants, podcast transcription tools, and accessibility solutions to call center analytics, language learning platforms, and audiobook production pipelines. Explore the best speech and audio API providers to add voice intelligence to your product.
[12] AI APIs in this category
openai.com
Comprehensive AI platform with the GPT-5 family, gpt-image generation, transcription, and embeddings for text, image, and audio.
assemblyai.com
Advanced speech-to-text API with speaker diarization, sentiment analysis, and audio intelligence features.
azure.microsoft.com
Microsoft's comprehensive AI platform with OpenAI models, cognitive services, and enterprise ML capabilities.
deepgram.com
Fast and accurate speech recognition API with real-time streaming, custom models, and industry-leading performance.
elevenlabs.io
Premium AI voice synthesis with ultra-realistic text-to-speech, voice cloning, and multilingual support.
cloud.google.com
Google's comprehensive ML platform with Vertex AI, pre-trained APIs, and custom model development tools.
murf.ai
AI voice generator with 120+ studio-quality voices for voiceovers, presentations, and product videos.
play.ht
AI voice generation platform with 900+ voices, real-time synthesis, and voice cloning for diverse applications.
speechmatics.com
Enterprise speech recognition with industry-leading accuracy across accents, dialects, and challenging audio.
suno.com
AI music generation platform creating full songs with vocals, instruments, and lyrics from text prompts.
symbl.ai
Conversation intelligence API for analyzing voice and text interactions in real time.
platform.openai.com
OpenAI's automatic speech recognition model supporting 97 languages with high accuracy transcription.
// other_categories