TextSynth is a text generation service offering models like GPT-J, Boris, and GPT-NeoX for completion, Q&A, code, and more. Free to use with paid plans for

TextSynth is a text generation service that uses large language models such as GPT-J, Boris, and GPT-NeoX to complete text based on your input. Each model suits different tasks and languages — for example, the Boris model is designed for languages other than English, such as French.
You can adjust generation settings to control the output:
TextSynth includes pre-loaded examples for common tasks such as text completion, question answering, and code writing — including “letter of motivation,” “Unicorns that speak English,” and “C program.” Beyond text, it can convert text to images and generate code.
TextSynth launched in 2020 and was one of the first services to offer access to the GPT-2 language model. It now provides access to several language models for text generation, including GPT-J, Boris, and GPT-NeoX.
TextSynth suits content creators, copywriters, teachers, students, programmers, linguists, technical professionals, and anyone working in a creative field.
TextSynth is free to use, with limits on usage. Paid plans are available for those who need more capacity — see the sign-up link on their website. Documentation is available on the site for further guidance.
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