Trinity Mini is Arcee's compact sparse Mixture-of-Experts model with 26 billion total parameters and 3.5 billion active parameters per token, optimized for resource-efficient inference in production agent systems. Released as open weights under the Apache 2.0 license, it preserves strong capability while sharply reducing computational overhead compared with the larger 400B Trinity Large family. The model features a 128k context window with grouped query attention and supports function calling and structured output, enabling multi-turn agent workflows and tool orchestration while maintaining coherence over long inputs. Trained on 10 trillion tokens, Trinity Mini delivers performance close to larger instruction-following models while prioritizing speed and reliability in agentic loops, with recommended inference settings tuned for low-latency multi-step work. Unlike Trinity Large Preview, which leans toward creative tasks, or Trinity Large Thinking, which optimizes for explicit reasoning, Trinity Mini targets developers who need practical, lightweight agentic capability. Its smaller parameter count and MoE efficiency make it well suited to applications requiring rapid token generation and memory-efficient multi-turn conversations.
Call Trinity Mini on Opper with the OpenAI SDK. Sign up without a credit card. Get started
Trinity Mini runs on 1 route through the Opper gateway. Compare residency, zero data retention and training posture at a glance, with full data-handling detail per route below.
| Provider | Region | Zero data retention | Training | Input | Output | Cache read |
|---|---|---|---|---|---|---|
| US | No | $0.04 | $0.15 | Input price |
Each route hosting Trinity Mini has its own privacy posture, residency, and GDPR terms. Postures are maintained by Opper with a last-verification timestamp.
Zero data retention with abuse monitoring: prompts and outputs are kept for abuse monitoring only, for a window the provider does not state, and are not used for training. No training on customer data. US; SCCs; DPA available.
Call Trinity Mini through the Opper gateway with one API key. Opper is drop-in compatible with the OpenAI, Anthropic and Google AI SDKs.
Trinity Mini is a premium model on Opper. Sign up needs no credit card: you get an API key straight away and the free models work in the playground and the API. Add a card to use premium models, pay-as-you-go with no minimum.
Copy this and paste it into a coding agent like Claude Code, Cursor or Codex and it'll wire up Opper for you.
import OpenAI from "openai";const client = new OpenAI({apiKey: process.env.OPPER_API_KEY,baseURL: "https://api.opper.ai/v3/compat",});const completion = await client.chat.completions.create({model: "arcee/trinity-mini",messages: [{ role: "user", content: "Hello" }],});console.log(completion.choices[0].message.content);
Side-by-side on privacy, EU hosting, pricing, and benchmarks.
