ContextPilot accelerates long-context LLM inference through context reuse — a new paradigm that identifies overlapping context blocks across users and conversation turns to maximize KV-cache reuse while maintaining or even improving inference quality. Developed in collaboration with Tencent.
Key Features
Context Index — Identifies overlapping context blocks across LLM interactions (cross-user, cross-turn) and builds a reuse index for efficient KV-cache sharing.
Context Ordering & De-duplication — Reorders and de-duplicates context to maximize KV-cache reuse rates across requests.
Succinct Context Annotations — Lightweight annotations that prevent quality degradation during reuse, and actually improve reasoning quality in longer-context scenarios.
Modular Architecture — Clean interfaces designed for integration with existing inference engines such as vLLM and SGLang.
Results
- Prefill latency reduced by up to 3x over SOTA methods
- Inference quality maintained — and improved in longer-context scenarios
- Open source
Collaborators
Tencent
ContextPilot 通过上下文复用加速长上下文 LLM 推理——全新的加速范式,在多用户、多轮对话中识别重叠的上下文块并最大化 KV-cache 复用,同时通过上下文注解技术保持推理质量不降反升。与腾讯合作开发。
核心功能
上下文索引 — 跨 LLM 交互(跨用户、跨轮次)识别重叠的上下文块,建立复用索引。
上下文排序与去重 — 上下文排序与去重技术,最大化 KV-cache 复用率。
简洁上下文注解 — 在复用场景下防止推理质量降级,长上下文场景甚至能提升推理质量。
模块化架构 — 干净的接口设计,可与现有推理引擎(如 vLLM、SGLang)集成。
成果
- Prefill 延迟比 SOTA 方法降低最高 3×
- 推理质量保持不变,长上下文场景甚至提升
- 已开源
合作方
腾讯
