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Not Human Search API is a free Machine Learning API that requires no API key, is served over HTTPS and supports CORS, so it can be called from the browser.

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OpenAI-compatible, about 30 free LLMs, 30 calls per 5 hours, optional pay-as-you-go, public beta
NLP API using spaCy and transformers for NER, sentiments, classification, summarization, and more
Unified API for 300+ LLMs from OpenAI, Anthropic, Meta, Mistral and more, with a free tier
Open source computer vision API based on open source models
Yes. The Not Human Search 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.
No. The Not Human Search API requires no authentication, so you can start making requests without signing up.
Yes. The Not Human Search API supports CORS, so front-end JavaScript can call it directly.
Yes. The Not Human Search API is served over HTTPS, so it's safe to use in production.