🔥 Hot Repo: Netflix Engineer's $700K Cost-Killer Tops GitHub Trending

One-liner — Headroom is an open-source context compression layer that squeezes 60–95% of tokens out of LLM inputs — tool outputs, logs, RAG chunks — before they ever reach the model. - Repo: chopratejas/headroomhttps://github.com/chopratejas/headroom - Stars: ⭐ 11,491 +3,139 today - Language: Python - License: Apache 2.0 --- What It Does Headroom sits between your agent and your LLM provider, transparently compressing every piece of context — JSON blobs, stack traces, code files, conversation history — before the model sees it. Six compression algorithms handle different content types: SmartCrusher for JSON, an AST-aware CodeCompressor for source code Python, JS, Go, Rust, Java, C++, and Kompress-base, a HuggingFace model trained on agentic traces for free-form text. A reversible mode called CCR Compress-Cache-Retrieve stores originals locally and lets the LLM retrieve them on demand via an MCP tool call. Why It's Blowing Up Netflix Senior Engineer Tejas Chopra first published Headroom in January 2026, but the project exploded again this week after The Register covered it under the headline "Netflix wiz creates app to slash AI bills, then open sources it." Developer communities picked it up fast. The headline stat: users have collectively saved an estimated $700,000 in API token costs and recovered 200 billion tokens since launch. The timing is perfect. Claude Opus 4.8 and GPT-4.1 pricing have raised long-context costs sharply, and agentic loops — where tool outputs get fed back repeatedly — compound the problem fast. Headroom targets exactly this: real agent workloads show 73–92% token savings with no accuracy drop on standard benchmarks GSM8K, TruthfulQA, SQuAD v2. The MCP server integration, which lets Claude and other MCP-compatible agents self-compress on demand, pushed the v0.22 release onto GitHub's top trending list with +3,139 stars in a single day. The creator also added headroom learn, which mines failed agent sessions and auto-generates prompt