Arcee AI

Trinity Large Preview

Trinity Large Preview model card cover

Lightly post-trained 398B MoE chat model for creative work, long-context prompts, and tool-using agents

Context
524K
Released
8mo ago
Parameters
—

Sources:models.dev

Benchmarks

DeepSWE is the primary coding benchmark where an exact model evaluation exists. Other sourced evaluations appear below; missing scores are not zero.

Not evaluated in DeepSWE 1.1 as of 2026-09-22. Results are only shown for exact model versions in the official dataset. Official leaderboard.

No benchmark results have been matched to this model yet.

Specifications

Developer
Arcee AI
Model family
Trinity
Type
Language model
Predecessor
—
Successor
—
Released
January 27, 2026
Model ID
arcee-ai/trinity-large-preview
Openness
Open weights
License
OpenMDW-1.1
Parameters
—
Input modalities
text
Output modalities
text
Modality
text->text
Max output tokens
262K
Hugging Face
—
Source freshness
Metadata synced Oct 8, 2026, 10:17 PM UTC
Additional source evidence
Source model
arcee-ai/trinity-large-preview
Source family
trinity
Last updated
2026-05-28
Model context
524K
Model output limit
262K
Open weights
Yes
File attachments
No
Reasoning
No
Tool calling
Yes
Temperature control
Yes

Downloadable weights

Official references

Complete source record (JSON)
{
  "id": "arcee-ai/trinity-large-preview",
  "name": "Trinity Large Preview",
  "description": "Lightly post-trained 398B MoE chat model for creative work, long-context prompts, and tool-using agents",
  "family": "trinity",
  "last_updated": "2026-05-28",
  "attachment": false,
  "reasoning": false,
  "tool_call": true,
  "temperature": true,
  "modalities": {
    "input": [
      "text"
    ],
    "output": [
      "text"
    ]
  },
  "limit": {
    "context": 524288,
    "output": 262144
  },
  "release_date": "2026-01-27",
  "open_weights": true,
  "license": "OpenMDW-1.1",
  "links": [
    {
      "url": "https://huggingface.co/arcee-ai/Trinity-Large-Preview",
      "label": "Model card",
      "type": "model_card"
    },
    {
      "url": "https://www.arcee.ai/blog/trinity-large",
      "label": "Announcement",
      "type": "announcement"
    },
    {
      "url": "https://huggingface.co/arcee-ai/Trinity-Large-Preview/blob/main/LICENSE",
      "label": "License",
      "type": "license"
    }
  ],
  "weights": [
    {
      "label": "Hugging Face",
      "url": "https://huggingface.co/arcee-ai/Trinity-Large-Preview",
      "format": "safetensors"
    }
  ]
}

Infrastructure

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