open weights — A model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.
context window — The maximum amount of text a model can consider at once — its working memory for the current conversation or task.
tool use — A model's ability to call external functions — run code, search the web, edit files — instead of only generating text.
reasoning model — A model trained to think — generating extended internal reasoning before answering — trading time and tokens for accuracy on hard problems.
Why it matters
Trinity-Large-Thinking is an Apache 2.0 open weightsA model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.Full definition →reasoning modelA model trained to think — generating extended internal reasoning before answering — trading time and tokens for accuracy on hard problems.Full definition → built for multi-turn tool useA model's ability to call external functions — run code, search the web, edit files — instead of only generating text.Full definition → and long-running agent loops. It is downloadable for self-hosting rather than API-only access, with its instruct predecessor still free on OpenRouter.
