Is Trinity Large Thinking available on FastMetal?

Not at the moment. GLM 5.3 Flash, from the same lab, is available on the FastMetal API today.

What is the context window of Trinity Large Thinking?

262,144 tokens, shared between the prompt and the response.

How does Trinity Large Thinking rank?

#125 on the public arena's Japanese board (ELO 1,339). Ranks move as the leaderboard is updated.

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arcee-ai/trinity-large-thinking

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Trinity Large Thinking

Trinity Large Thinking is a powerful open source reasoning model from the team at Arcee AI. It shows strong performance in PinchBench, agentic workloads, and reasoning tasks. Launch video: https://youtu.be/Gc82AXLa0Rg?si=4RLn6WBz33qT--B7...

4/1/2026

262,144 tokens

#118 Code (Overall)

Specifications

Modalities

Input

text

Output

text

Supported Parameters

frequency_penalty

include_reasoning

logit_bias

logprobs

max_tokens

presence_penalty

reasoning

repetition_penalty

response_format

seed

stop

structured_outputs

temperature

tool_choice

tools

top_k

top_logprobs

top_p

Max Output Tokens

80,000

Reasoning Configuration

Default: Thinking on
Turning thinking off: Not possible (always thinks)

How to control thinking, and what it costs

Frequently asked questions

Is Trinity Large Thinking available on FastMetal?: Not at the moment. GLM 5.3 Flash, from the same lab, is available on the FastMetal API today.
What is the context window of Trinity Large Thinking?: 262,144 tokens, shared between the prompt and the response.
How does Trinity Large Thinking rank?: #125 on the public arena's Japanese board (ELO 1,339). Ranks move as the leaderboard is updated.