WideSeek-R1/WideSeek-SFT-4B

TEXT GENERATIONPricing:Input $0.4 / Cached $0.08 / Output $0.8Concurrent Unit Cost:1Model Size:4BQuant:BF16Context Size:32kTool Calling:SupportedPublished:Sep 1, 2026License:apache-2.0Architecture:Transformer Open Weights Featherless Exclusive Cold

WideSeek-SFT-4B is a 4 billion parameter language model developed by WideSeek-R1, based on the Qwen3 architecture. It is supervised fine-tuned on agent-level multi-turn trajectories from the WideSeek-R1 SFT Data. This model specializes in handling both width-only and depth-only tasks, making it suitable for complex conversational AI and agentic workflows. With a context length of 32768 tokens, it can process extensive multi-turn interactions.

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WideSeek-SFT-4B Overview

WideSeek-SFT-4B is a 4 billion parameter language model built upon the Qwen3 architecture. Developed by WideSeek-R1, this model has undergone supervised fine-tuning using the proprietary WideSeek-R1 SFT Data. This dataset is specifically designed with agent-level multi-turn trajectories, focusing on both 'width-only' and 'depth-only' task types.

Key Capabilities

  • Agentic Task Handling: Optimized for processing complex, multi-turn interactions typical in agent-based systems.
  • Specialized Fine-tuning: Benefits from a unique dataset that targets distinct conversational patterns:
    • Width-only tasks: Likely involves exploring multiple options or branches at a single decision point.
    • Depth-only tasks: Suggests a focus on sequential reasoning and detailed exploration within a single path.
  • Qwen3 Foundation: Leverages the robust capabilities of the Qwen3 base model.
  • Extended Context: Supports a context length of 32768 tokens, enabling it to maintain coherence over long dialogues and complex task sequences.

Good For

  • Developing AI agents that require nuanced multi-turn conversational abilities.
  • Applications needing to manage tasks that involve either broad exploration of options or deep, sequential reasoning.
  • Research into agentic AI behaviors and complex task execution.