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Arcee AI: Trinity Mini

byArcee AI

Trinity Mini is a reasoning model from Arcee AI released on Dec 1, 2025. It reads text and writes text, with a 131K token context window and up to 131K tokens per reply.

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It costs $0.045 per million input tokens and $0.15 per million output tokens.

It supports tool calling, and its weights are open, so you can host it yourself.

Modalities
In / out price
$0.045 / $0.15 per 1M
Context
131K
Max output
131K
Released
Dec 1, 2025
Knowledge cutoff
Oct 2024
  • Tool calling
  • Structured output
  • Reasoning
  • Prompt caching
  • Open weights
  • Free to use

Trinity Mini pricing

USD, as listed on Oct 15, 2026. Most bills are input heavy, so the cached input rate matters as much as the headline price.

Input$0.045 / 1M tokens
Output$0.15 / 1M tokens

What Trinity Mini costs per month

Pick a workload close to yours or type your own volumes.

Trinity Mini per month
$4.95
Without caching
$4.95
Per request
$0.0002

Supported request parameters

What you can set when you call Trinity Mini through an OpenAI compatible API.

  • Toolstools
  • Reasoningreasoning
  • Temperaturetemperature

Alternatives to Trinity Mini

Models that take the same inputs and call tools, closest in price, cheaper ones first.

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    by z-aiDec 8, 2025$0.0218/M input tokens$0.2184/M output tokens6 providers

  • Inception: Mercury 2.5

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    by inceptionSep 8, 2026$0.04/M input tokens$0.15/M output tokens5 providers

  • Inception: Mercury 2.5 Preview

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    by inceptionSep 1, 2026$0.04/M input tokens$0.15/M output tokens

  • Qwen3.7 Flash

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    by qwenJul 15, 2026$0.03/M input tokens$0.13/M output tokens12 providers

  • Sarvam AI: Sarvam-30B

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    by sarvamFeb 18, 2026$0.02/M input tokens$0.10/M output tokens2 providers

  • OpenAI: GPT OSS 20B

    Index 10

    Reads text. Tool calling, structured output, reasoning. Served by 35 providers.

    by openaiJun 1, 2024128K context$0.07/M input tokens$0.30/M output tokens35 providers

More from Arcee AI

  • Trinity Large Thinking

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    by arcee-aiApr 1, 2026$0.25/M input tokens$0.80/M output tokens5 providers

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Trinity Mini questions

How much does the Trinity Mini API cost?

$0.045 per million input tokens and $0.15 per million output tokens. The estimator on this page turns that into a monthly bill for your own workload.

What is the context window of Trinity Mini?

131,072 tokens of input, and it can write up to 131,072 tokens in one reply. As a rough guide, a million tokens is around 750,000 English words.

Does Trinity Mini support tool calling?

Yes. It accepts tool definitions, which is what an agent needs to call your APIs.

Is Trinity Mini open source?

Its weights are published, so you can run it on your own hardware or a cloud of your choice. Read the license before commercial use.

When was Trinity Mini released?

Dec 1, 2025, with training data up to Oct 2024.

Catalog data from models.dev (MIT licensed), refreshed daily, last on Oct 15, 2026. The summary is written from these facts.

Building on Trinity Mini?

I test your real tasks on it and the two closest alternatives, then ship the agent on whichever wins on cost and accuracy.

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