Meet Token Saver: An Open-Source MCP Extension Using Local Hybrid RAG to Cut Claude PDF Token Costs 90-99% — 2026-07-30

## Short Segments AngelSpec from Tencent redefines speculative decoding with a unified training framework. Today, we're diving into Tencent's AngelSpec, a new open-source framework that optimizes speculative decoding for AI models. We'll also explore Moonshot AI's MoonEP, a library enhancing expert parallelism for massive models. And later, we'll feature Token Saver, a tool that dramatically cuts token costs for large PDF analysis. Tencent has unveiled AngelSpec, an open-source framework designed to enhance speculative decoding for AI models. AngelSpec supports both multi-token prediction and block-parallel speculative decoding, addressing the challenge of workload heterogeneity. Unlike traditional speculative-decoding methods that rely on averaged benchmarks, AngelSpec tailors its approach to real-world traffic, optimizing structure and training data accordingly. This framework allows a lightweight drafter to propose multiple future tokens, which the target model verifies in a single pass using rejection sampling. By focusing on workload-specific constraints, AngelSpec improves the efficiency of speculative decoding, particularly in high-entropy environments like open-ended conversations and structured domains such as programming and mathematics. For developers, this means more efficient AI model training and deployment, with the potential for faster and more accurate results. Moonshot AI's MoonEP library promises to balance expert parallelism for MoE training. Moonshot AI has released MoonEP, an open-source library designed to improve expert parallelism in distributed Mixture-of-Experts workloads. Part of the Kimi K3 Open Day release, MoonEP aims to enhance communication efficiency at scale, contributing to a 2.5× improvement in scaling efficiency for the Kimi K3 model. In expert parallelism, a router directs each token to its top-K experts, but imbalances can occur, leading to inefficiencies. MoonEP addresses this by quantifying skew and aiming for perfect balance, reducing latency and optimizing GPU memory usage. This development is crucial for AI researchers and developers working with large-scale models, as it offers a more efficient way to manage distributed workloads and improve overall system performance. ## Feature Story Token Saver slashes PDF token costs by up to 99% for AI developers. Marktechpost has introduced Token Saver, an open-source extension for Claude Desktop that dramatically reduces token usage when analyzing large PDF documents. Developed by Arnav Rai during his internship, this tool leverages a Local Hybrid RAG system to process documents locally, sending only relevant passages to the model. This approach not only cuts token consumption by 92% to 99% but also ensures privacy, as the entire document never leaves the user's machine. Token Saver addresses a significant pain point for AI developers and researchers who face high costs due to the repeated processing of large documents in context windows. By reducing the number of tokens required, it allows for more efficient and cost-effective analysis of extensive texts. The tool is MIT licensed and requires no complex setup, making it accessible to a wide range of users without the need for Python environments or terminal configurations. This innovation is particularly relevant in the context of large language models, where token costs can quickly escalate with each interaction. By minimizing these costs, Token Saver enables more sustainable and scalable use of AI models for document analysis. As AI continues to evolve, tools like Token Saver highlight the importance of optimizing resource usage and ensuring privacy in data processing. For developers and researchers, this means more freedom to explore and analyze large datasets without the burden of excessive costs. Looking ahead, the adoption of such tools could significantly impact the way AI models are used in various industries, from academia to enterprise applications. As the demand for efficient AI solutions grows, innovations like Token Saver will play a crucial role in shaping the future of AI development and deployment.