Structured output from LLMs without reprompting
Built a tool for transforming unstructured data into structured outputs using language models (with 100% adherence). If you're facing problems getting GPT to adhere to a schema (JSON, XML, etc.) or regex, need to bulk process some unstructured data, or generate synthetic data, check it out. We run our own tuned model (you can self-host if you want), so, we're able to have incredibly fine grained control over text generation. Repository: https://github.com/automorphic-ai/trex Playground: https://automorphic.ai/playground
Structured output from LLMs without reprompting launched on July 16, 2023 with 174 votes, #231 of 4,347 launches that month and more than 95% of that year's launches. The site was not reachable when checked in September 2026.
In plain words
This tool converts unstructured data into structured outputs like JSON or XML using language models while guaranteeing format adherence. It's designed for developers who need reliable schema compliance, bulk data processing, or synthetic data generation. The service runs a tuned proprietary model with fine-grained text generation control, and users can self-host if preferred.
written from the facts on this page · September 2026
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