![]() However, since Google only supports transcribing files already in a Google Cloud Bucket, the free credits won’t get you very far. Google gives users 60 minutes free transcription, with $300 in free credits for Google Cloud hosting. Google Speech-to-Text is a well known speech transcription API. You can even copy/paste code examples in your preferred language directly from the AssemblyAI Docs. AssemblyAI’s easy-to-use models also allow for quick set-up and transcription in any programming language. The API also supports virtually every audio and video file format out-of-the-box for easier transcription.ĪssemblyAI has expanded the languages it supports to include English, Spanish, French, German, Japanese, Korean, and much more, with additional languages being released monthly. Its high accuracy and collection of AI models like Speaker Diarization and Sentiment Analysis makes AssemblyAI a sound option for developers looking for a free Speech-to-Text API. The company offers several free transcription hours for audio files or video streams per month before transitioning to an affordable paid tier. The AI startup is growing quickly thanks to industry-best accuracy, an easy-to-use interface, and cutting-edge AI models such as Speaker Diarization, Topic Detection, Entity Detection, Automated Punctuation and Casing, Content Moderation, Sentiment Analysis, Text Summarization, and more. AssemblyAIĪssemblyAI, an API platform for state-of-the-art AI models, is a leading name in the Speech-to-Text API market. Let’s look at three of the most popular Speech-to-Text APIs and AI models with a free tier: AssemblyAI, Google, and AWS Transcribe. This means that the API or model is free for anyone to use up to a certain volume per day, per month, or per year. However, large scale use of APIs and AI models typically comes with a cost.īut if you’re looking to use an API or AI model for a small project or for a trial run, many of today’s Speech-to-Text APIs and AI models have a free tier. Learn more Free Speech-to-Text APIs and AI ModelsĪPIs and AI models are more accurate, easier to integrate, and come with more out-of-the-box features than open source options. Learn why AssemblyAI is the leading API platform for state-of-the-art AI models. Replace with the deployment ID for your neural voice model.Looking for a powerful Speech-to-Text API or AI model? You can also use the following endpoints. If you've created a custom neural voice font, use the endpoint that you've created. Voices in preview are available in only these three regions: East US, West Europe, and Southeast Asia. Use this table to determine availability of neural voices by region or endpoint: Region ![]() Be sure to select the endpoint that matches your Speech resource region. These regions are supported for text-to-speech through the REST API. ![]() The cognitiveservices/v1 endpoint allows you to convert text to speech by using Speech Synthesis Markup Language (SSML). This status might also indicate invalid headers. There's a network or server-side problem. You have exceeded the quota or rate of requests allowed for your resource. Make sure your resource key or token is valid and in the correct region. A common reason is a header that's too long. ![]() Or, the value passed to either a required or optional parameter is invalid. HTTP status codeĪ required parameter is missing, empty, or null. The HTTP status code for each response indicates success or common errors. "LocaleName": "Chinese (Mandarin, Simplified)", "Name": "Microsoft Server Speech Text to Speech Voice (zh-CN, YunxiNeural)", "Name": "Microsoft Server Speech Text to Speech Voice (ga-IE, OrlaNeural)", "ShortName": "en-US-JennyMultilingualNeural", "Name": "Microsoft Server Speech Text to Speech Voice (en-US, JennyMultilingualNeural)", "Name": "Microsoft Server Speech Text to Speech Voice (en-US, JennyNeural)", This JSON example shows partial results to illustrate the structure of a response: [ You should receive a response with a JSON body that includes all supported locales, voices, gender, styles, and other details. header 'Ocp-Apim-Subscription-Key: YOUR_RESOURCE_KEY' Here's an example curl command: curl -location -request GET '' \ Ocp-Apim-Subscription-Key: YOUR_RESOURCE_KEY This request requires only an authorization header: GET /cognitiveservices/voices/list HTTP/1.1 For more information, see Authentication.Įither this header or Ocp-Apim-Subscription-Key is required.Ī body isn't required for GET requests to this endpoint. This table lists required and optional headers for text-to-speech requests: HeaderĮither this header or Authorization is required.Īn authorization token preceded by the word Bearer. Voices and styles in preview are only available in three service regions: East US, West Europe, and Southeast Asia.
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