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Trinity Large Thinking

by Arcee AiReleased 1 April 2026

Trinity Large Thinking is a model from Arcee AI that you can download and run yourself. It reads about 260 pages of text, replies up to about 80 pages, and thinks before it answers. Give it a task with many steps, where it plans, uses the tools and apps you connect, and works through problems, and send its earlier thinking back with each new message for the best results. For quick chat or simple extraction, a small model that does not think first answers faster.

TakesText
GivesText

Reads about 260 pages · writes up to 80 pages

Parameters you can send

Standard OpenAI fields, grouped by what they control. Anything not listed is accepted and ignored.

Shaping the reply

How long, how varied, where to stop.

max_tokenstemperaturetop_ptop_k

Reasoning

Let it think before answering — and see the thinking.

reasoninginclude_reasoning

Tools

Let the model call your functions.

toolstool_choice

Questions about Trinity Large Thinking

  • Is Trinity Large Thinking still on sale?

    No. Arcee Ai has retired it. Other Arcee Ai models are on sale.

  • What is Trinity Large Thinking best for?

    Trinity Large Thinking is a model from Arcee AI that you can download and run yourself. It reads about 260 pages of text, replies up to about 80 pages, and thinks before it answers. Give it a task with many steps, where it plans, uses the tools and apps you connect, and works through problems, and send its earlier thinking back with each new message for the best results. For quick chat or simple extraction, a small model that does not think first answers faster.

  • Does Trinity Large Thinking work in Arabic, French or Darja?

    Arcee's model card tags English, Spanish, French, German, Italian, Portuguese, Russian, Arabic, Hindi, Korean and Chinese. Darja is not named.

  • Can it read PDFs, images or a whole book?

    It reads text. Up to 262K tokens in one request, about 260 pages. It writes up to 60 000 words at once.

  • Is Trinity Large Thinking open source?

    Yes, its weights are public. Open weights on Hugging Face

  • Who makes Trinity Large Thinking, and when was it released?

    Arcee Ai. Released 1 April 2026.