Dingdust/ContextPilot-E4B-heretic

VISIONPricing:Input $0.4 / Cached $0.08 / Output $0.8Concurrent Unit Cost:1Model Size:7.9BQuant:FP8Context Size:32kTool Calling:SupportedPublished:Sep 3, 2026License:otherArchitecture:Transformer Featherless Exclusive Cold

Dingdust/ContextPilot-E4B-heretic is a 7.9 billion parameter decensored version of the Tencent ContextPilot-E4B model, created using the Heretic v1.4.0 framework. This model is specifically designed for proactive context management in long-horizon language-model agents, teaching them to plan, maintain long-term memory, and offload less useful context. It excels in tasks requiring continuous reasoning and tool use, particularly in long-context question answering and deep search scenarios.

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Overview

Dingdust/ContextPilot-E4B-heretic is a 7.9 billion parameter model, a decensored variant of Tencent's ContextPilot-E4B, processed with Heretic v1.4.0. ContextPilot-E4B is a Gemma4-E4B checkpoint of the ContextPilot framework, which focuses on proactive context management for long-horizon language-model agents. It enables agents to plan, manage long-term memory, and intelligently offload less relevant context while performing reasoning and tool-use tasks.

Key Capabilities

  • Proactive Context Management: Teaches agents to manage their working context efficiently over long interactions.
  • Enhanced Toolset: Incorporates an extended context-management toolset including planning, structured memory, retrieval, and soft context offloading.
  • Fine-grained RL: Utilizes context-aware partial rollout and fine-grained credit assignment to optimize context-editing decisions.
  • Decensored Output: The "heretic" modification aims to reduce refusals, showing 32/100 refusals compared to 100/100 for the original model.

Good For

  • Research on proactive context management and long-horizon agents.
  • Applications requiring long-context question answering.
  • Deep search tasks where agents need to iteratively retrieve and integrate dispersed information.
  • Scenarios where a less restrictive model response is desired compared to the original ContextPilot-E4B.