Tinq.ai is an AI toolkit that provides natural language processing (NLP) capabilities for developers to integrate into their applications. The toolkit includes a range of ready-to-use NLP API tools for tasks such as named-entity recognition (NER), sentiment analysis, text classification, summarization, question answering, text generation, and language detection. It also includes a writing assistant feature, which provides AI-powered multilingual rewriting with paraphrasing API, as well as a plagiarism checker. The toolkit is easy to integrate with existing software, and can be accessed with a single API. It integrates with popular tools such as Zapier, Gmail, Google Sheets, and Google Forms. Tinq.ai is trusted by over 6,000 developers and has processed over 5 million API requests each month. It offers flexible pricing, with a subscription plan or an option to purchase credits. There is also a free trial available.