Clarifai
Computer Vision
NLP API for text generation, embeddings, classification and summarization with a free trial tier.
Cohere API is a free Machine Learning API that requires apiKey authentication, is served over HTTPS and supports CORS, so it can be called from the browser.
Cohere's NLP platform provides customizable large language models and tools for developers to build AI applications.
Details from docs.cohere.com.

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Computer Vision
The Cohere API is provided by Cohere (docs.cohere.com). Cohere's NLP platform provides customizable large language models and tools for developers to build AI applications.
Yes. The Cohere API is listed in the Machine Learning category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The Cohere API uses apiKey authentication, so you need to register for credentials before making requests.
Yes. The Cohere API supports CORS, so front-end JavaScript can call it directly.
Yes. The Cohere API is served over HTTPS, so it's safe to use in production.