Description
Sage-A1.5 is a sophisticated 35B Mixture-of-Experts model developed by the Shanghai AI Laboratory. It is designed to enhance long-horizon scientific problem solving through adaptive capability composition. Building upon its predecessor, A1, Sage-A1.5 not only addresses individual tasks but also organizes and revises its approach during execution. This model highlights three primary capabilities: Agentic Orchestration, Verification, and Open Scientific Discovery.
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Agentic Orchestration allows Sage-A1.5 to extend single-agent execution through task delegation and parallel collaboration among subagents with isolated contexts. This enables complex tasks to be decomposed and addressed concurrently, reducing interference across concurrent subagents. Verification Mode strengthens long-horizon reliability through progress checking, evidence validation, and reflective strategy revision, allowing the model to recognize unproductive search paths and pursue alternative approaches. Open Scientific Discovery extends agentic capabilities beyond answering predefined questions to conducting exploratory research, connecting scientific inquiry with interactive analysis and inspectable research artifacts.
Sage-A1.5 is compatible with Hugging Face Transformers, vLLM, and SGLang, supporting function calling and tool integration for seamless interaction with APIs, code interpreters, search engines, and other external tools. It natively supports a 256K context window, extendable to 512K with specific configurations. The model is evaluated across various benchmarks, achieving state-of-the-art results in several categories, including long-horizon search, engineering tasks, and scientific research.
The model is particularly beneficial for developers and enterprises looking to integrate advanced AI capabilities into their workflows. It offers a practical path from long-horizon task execution to collaborative, verifiable, and inspectable scientific exploration. Sage-A1.5's performance is competitive against larger models, making it a highly capable and efficient agentic model.
- CategoryAI Models & LLMs
- Pricing ModelOpen source
- DeploymentCloud
- PlatformsWeb
Sage-A1.5 Highlights
Agentic Orchestration
Verification Mode
Open Scientific Discovery
Function Calling
Tool Integration
256K Context Window
Mixture-of-Experts Architecture
Scientific Reasoning
Getting Started with Sage-A1.5
Access model page: Visit the Hugging Face repository
Authenticate: Log in to your Hugging Face account
Configure: Set up the model with desired parameters
Send prompts: Interact with the model using API calls
Fine-tune: Adjust the model for specific tasks
Sage-A1.5's Use Cases
- Scientific Research
- Engineering Tasks
- Instruction Following
- Long-Horizon Search
- Tool Integration









