ARC 1.0 decision model
ARC 1.0 predicts model success and token use for agent routing. Read its open weights, policy presets and unfinished public serving plugin.
By Rayline · Hugging Face weight release: 10 Nov 2026
A Qwen3.5-0.8B-derived router that predicts model success and token use separately from the prices supplied by an application. The package includes routing and content-signal heads plus a general question head. Sage and Swift are policies on the same model.
Quick answers
What is ARC 1.0 by Rayline?
ARC 1.0: A Qwen3.5-0.8B-derived router that predicts model success and token use separately from the prices supplied by an application.
Who makes ARC 1.0?
ARC 1.0: Rayline
Are ARC 1.0's weights open?
ARC 1.0: Open weights and hosted arc-sage-1.0 / arc-swift-1.0; public vllm-arc plugin is unfinished Licence: Apache-2.0; LICENSE and NOTICE included
Facts
- Base
- Qwen/Qwen3.5-0.8B; specialized heads use the lower 12 layers, while the question head uses all 24
- Inputs
- Agent conversation and developer-defined questions with answer options
- Access
- Open weights and hosted arc-sage-1.0 / arc-swift-1.0; public vllm-arc plugin is unfinished
- Serving
- Stock vLLM cannot load the architecture alone. The public plugin supports encoder integration and Stage-1 scoring, without the complete policy, question or content-signal APIs
- Licence
- Apache-2.0; LICENSE and NOTICE included
Claims and sources
- The maker defines utility as value of success times predicted success minus expected cost. Sage uses value 4.5 and Swift 0.1. Prices are supplied at runtime; the package contains no price snapshot. vendor reportedsource
Links
Source: Card and release files → Source: Policies → Source: Provenance → Source: Licence → Source: Public plugin and limits →
Related projects
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