Metadata-Version: 2.4
Name: llm-zip
Version: 0.2.0
Summary: Context compression sidecar for LLM applications. Reduce token costs 3-5x before calling any AI API.
Author-email: "Ariel A. Fink" <hello.finksystems@gmail.com>
License: MIT License
        
        Copyright (c) 2026 FinkTech
        
        Permission is hereby granted, free of charge, to any person obtaining a copy
        of this software and associated documentation files (the "Software"), to deal
        in the Software without restriction, including without limitation the rights
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        furnished to do so, subject to the following conditions:
        
        The above copyright notice and this permission notice shall be included in all
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Keywords: llm,context-compression,token-optimization,fastapi,llmlingua,rag,ai-cost-reduction
Classifier: Development Status :: 3 - Alpha
Classifier: Intended Audience :: Developers
Classifier: License :: OSI Approved :: MIT License
Classifier: Programming Language :: Python :: 3.10
Classifier: Programming Language :: Python :: 3.11
Classifier: Programming Language :: Python :: 3.12
Classifier: Topic :: Scientific/Engineering :: Artificial Intelligence
Requires-Python: >=3.10
Description-Content-Type: text/markdown
License-File: LICENSE
Requires-Dist: llmlingua>=0.2.2
Requires-Dist: sentence-transformers>=3.0.0
Requires-Dist: markitdown[all]>=0.1.0
Requires-Dist: fastapi>=0.115.0
Requires-Dist: uvicorn[standard]>=0.30.0
Requires-Dist: pydantic>=2.0.0
Requires-Dist: python-multipart>=0.0.9
Requires-Dist: slowapi>=0.1.9
Requires-Dist: typer>=0.12.0
Requires-Dist: tiktoken>=0.7.0
Requires-Dist: httpx>=0.27.0
Requires-Dist: questionary>=2.0.0
Provides-Extra: dev
Requires-Dist: pytest>=8.0.0; extra == "dev"
Requires-Dist: pytest-asyncio>=0.23.0; extra == "dev"
Requires-Dist: pytest-mock>=3.14.0; extra == "dev"
Requires-Dist: httpx>=0.27.0; extra == "dev"
Requires-Dist: ruff>=0.4.0; extra == "dev"
Requires-Dist: mypy>=1.10.0; extra == "dev"
Dynamic: license-file

# 🗜️ llm-zip

<p align="center">
  <a href="https://github.com/finktech-dev/llm-zip/releases"><img src="https://img.shields.io/badge/version-0.2.0-blue?style=for-the-badge" alt="Version"></a>
  <a href="https://pypi.org/project/llm-zip/"><img src="https://img.shields.io/pypi/v/llm-zip?style=for-the-badge&logo=pypi&logoColor=white&color=3775A9" alt="PyPI"></a>
  <a href="LICENSE"><img src="https://img.shields.io/badge/License-MIT-22c55e?style=for-the-badge" alt="License"></a>
  <a href="https://www.python.org/"><img src="https://img.shields.io/badge/Python-3.10+-3776AB?style=for-the-badge&logo=python&logoColor=white" alt="Python"></a>
  <a href="https://fastapi.tiangolo.com/"><img src="https://img.shields.io/badge/API-FastAPI-009688?style=for-the-badge&logo=fastapi&logoColor=white" alt="FastAPI"></a>
  <a href="https://www.docker.com/"><img src="https://img.shields.io/badge/Docker-ready-2496ED?style=for-the-badge&logo=docker&logoColor=white" alt="Docker"></a>
</p>

<p align="center">
  <a href="https://github.com/microsoft/LLMLingua"><img src="https://img.shields.io/badge/Powered_by-LLMLingua--2-FF6F00?style=flat-square&logo=microsoft&logoColor=white" alt="LLMLingua-2"></a>
  <a href="https://github.com/microsoft/markitdown"><img src="https://img.shields.io/badge/Files_via-MarkItDown-0078D4?style=flat-square&logo=microsoft&logoColor=white" alt="MarkItDown"></a>
  <a href="https://github.com/BerriAI/litellm"><img src="https://img.shields.io/badge/Pricing-LiteLLM-7C3AED?style=flat-square&logo=github&logoColor=white" alt="LiteLLM"></a>
  <a href="https://github.com/astral-sh/ruff"><img src="https://img.shields.io/endpoint?url=https://raw.githubusercontent.com/astral-sh/ruff/main/assets/badge/v2.json&style=flat-square" alt="Ruff"></a>
</p>

<p align="center">
  <strong>Context compression sidecar for LLM applications.<br>Reduce token costs 3–5× before calling any AI API.</strong>
</p>

<p align="center">
  <a href="#why-llm-zip-exists">Why</a> ·
  <a href="#how-it-works">How it works</a> ·
  <a href="#quickstart">Quickstart</a> ·
  <a href="#the-cli-experience">CLI</a> ·
  <a href="#what-you-get-back">API response</a> ·
  <a href="#markitdown-integration">File support</a> ·
  <a href="#-the-science--benchmarks">Benchmarks</a> ·
  <a href="#limitations--caveats">Limitations</a> ·
  <a href="#contributing">Contributing</a>
</p>

---

## Why llm-zip exists

AI inference is getting expensive. As context windows grow and agentic workflows multiply, the tokens you send to GPT, Claude, or Gemini compound fast — and the "free ride" subsidy era is ending.

llm-zip was built out of a simple need: compress context before it reaches the model, without changing anything else in the stack. No proxy. No middleware. No API keys. Just a sidecar you call over HTTP, that hands back a smaller text and tells you exactly how much you saved.

It started as an internal tool. It's open source because the problem is universal.

> Curious about how this started? Read [STORY.md](STORY.md).

---

## How it works

```text
Your app  ──→  POST /v1/compress  ──→  llm-zip
                                           │
                              compresses with LLMLingua-2
                              scores semantic preservation
                              calculates USD savings
                                           │
              compressed text + metrics  ◄─┘

Your app  ──→  calls OpenAI / Anthropic / Gemini
               with the smaller context
```

llm-zip never touches your API keys or your model calls. It only compresses.

---

## Quickstart

> **Requires Docker.** First-time model download is ~700MB and takes 2–5 min.

**Step 1 — Configure**

Windows (CMD / PowerShell):
```powershell
copy .llmzip.config.example .llmzip.config
notepad .llmzip.config
```

Linux / macOS:
```bash
cp .llmzip.config.example .llmzip.config
nano .llmzip.config
```

**Step 2 — Download models** *(only on first run)*
```bash
docker-compose run llmzip download-models
```

**Step 3 — Start**
```bash
docker-compose up -d
```

→ API: `http://localhost:8000` · Docs: `http://localhost:8000/docs`

---

## The CLI Experience

llm-zip isn't just an API — it comes with a UNIX-friendly CLI powered by Typer and Rich. It supports `stdin` pipes, outputs clean JSON, and tracks live model prices.

```bash
# Check current prices (fetches live from LiteLLM)
$ llmzip prices -p anthropic

Rates from LiteLLM as of 2026-06-05
┏━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━┳━━━━━━━━━━━┳━━━━━━━━━━━━┓
┃ Model                                     ┃ Input $/M ┃ Output $/M ┃
┡━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━╇━━━━━━━━━━━╇━━━━━━━━━━━━┩
│ anthropic.claude-3-5-sonnet-20241022-v2:0 │    3.0000 │    15.0000 │
│ anthropic.claude-3-haiku-20240307-v1:0    │    0.2500 │     1.2500 │
└───────────────────────────────────────────┴───────────┴────────────┘
```

> Model names come directly from LiteLLM and may use provider-specific naming (e.g. Bedrock-style). The exact list depends on live data at execution time.

```bash
# Compress directly from the terminal via pipes
$ cat huge_context.txt | llmzip compress --ratio 0.4 --model gpt-4o-mini > compressed.txt
✓ 24000 → 9600 tokens (2.5×) | score: 0.92 | saved: ~$0.0021 (gpt-4o-mini)
```

---

## What you get back

```json
{
  "compressed": "...",
  "original_tokens": 8400,
  "compressed_tokens": 1680,
  "compression_ratio": 5.0,
  "preservation_score": 0.91,
  "estimated_savings": {
    "gpt-4o-mini":           "$0.0010",
    "claude-haiku-4-5":      "$0.0013",
    "gemini-2.5-flash-lite": "$0.0006"
  },
  "skipped": false,
  "warning": null
}
```

Prices are fetched live from [LiteLLM](https://github.com/BerriAI/litellm) with local caching — no manual database updates needed.

---

## MarkItDown Integration

One of the practical problems that motivated llm-zip was RAG over internal documents. In private systems — invoices, reports, manuals, internal specs — the source content lives in PDFs, Word files, and spreadsheets.

llm-zip integrates [MarkItDown](https://github.com/microsoft/markitdown) as an optional preprocessing layer. When `FILE_CONVERSION=true`, you can send a file directly to `/v1/compress/file` and get back compressed text ready for your RAG pipeline.

```bash
curl -X POST http://localhost:8000/v1/compress/file \
  -F "file=@invoice.pdf" \
  -F "ratio=0.5"
```

Supported formats: PDF, Word (`.docx`), Excel (`.xlsx`), PowerPoint (`.pptx`), and more.

---

## Key Features

|    | Feature                    | Detail                                                                        |
|:--:| :------------------------- | :---------------------------------------------------------------------------- |
| 📄 | **Text and files**         | Compress plain text or upload PDFs, Word, Excel, and PowerPoint directly      |
| 🪓 | **Smart Chunking**         | Handle documents of any length by splitting text into chunks by paragraphs    |
| 🔑 | **Optional auth**          | Protect your instance with `API_KEY` in config (`Authorization: Bearer`)      |
| 📊 | **Dry-run estimate**       | `/v1/estimate` calculates savings without compressing                         |
| 🔀 | **Split mode**             | Run API and inference engine as separate containers (`DEPLOY_MODE=split`)     |
| 🖥️ | **CPU-Friendly**           | Default model requires only ~700MB of RAM — no GPU needed                     |
| 🌐 | **Global i18n**            | CLI in English, Spanish, Portuguese, Chinese, and Japanese                    |
| ⚙️ | **Configurable thresholds**| Define when llm-zip should and shouldn't intervene (`MIN_TOKENS_TO_COMPRESS`) |
| 🚫 | **Ignore rules**           | Exclude texts or system prompts via `.llmzipignore` and `.llmzipignore.local` |
| 🔒 | **Self-hosted**            | Your data never leaves your infrastructure                                    |

---

## Environment Variables

For CI or Docker deployments, you can override defaults with environment variables:

| Variable      | Description                                                                    |
| :------------ | :----------------------------------------------------------------------------- |
| `LLMZIP_LANG` | Forces CLI language (`en`, `es`, `pt`, `zh`, `ja`). Overrides system locale.   |
| `DEPLOY_MODE` | `monolith` (default) or `split` — separates API from inference container       |
| `MODELS_URL`  | URL of the models service in split mode (default: `http://llmzip-models:8001`) |
| `API_KEY`     | Optional security key for `/v1/*` endpoints                                    |

---

## 📊 The Science & Benchmarks

llm-zip is powered by Microsoft's LLMLingua-2. According to their [research paper evaluated on the LongBench dataset](https://arxiv.org/abs/2403.12968):

- **Compression sweet spot:** optimal performance between **2× and 5× compression**
- **Quality retention:** **90–98% Exact Match performance** vs. uncompressed prompts
- **Latency reduction:** end-to-end latency improvement of **1.6× to 2.9×** (task-agnostic, no prompt needed to start)

---

### 🧪 Internal Test Results

The following results were obtained by running llm-zip against real documents during development. They are not synthetic benchmarks — they reflect actual compression output on representative material.

> **How savings are calculated:** `tokens_saved × input_price_per_token`, using live prices fetched from LiteLLM at run time. For OpenAI models, tokenization is exact (tiktoken). For Anthropic, Google and DeepSeek, a character-ratio heuristic is used (±10% margin). Only **input token savings** are counted — output token reduction, which also occurs in many workflows, is not included. The figures below are **approximate lower-bound estimates**: real savings may be higher or lower depending on your actual usage pattern and the model you call.

| Document                             | Lang | Ratio | Tokens In | Tokens Out | Compression | Preservation | Est. Saving¹ |
| :----------------------------------- | :--: | :---: | --------: | ---------: | :---------: | :----------: | :----------- |
| [A Survey of LLMs][survey] (100+ p.) |  EN  |  def  |   296,726 |    172,684 |  **1.72×**  |    0.9564    | ~$0.398      |
| [Attention Is All You Need][aiayn]   |  EN  |  0.5  |    11,993 |      6,240 |  **1.92×**  |    0.9087    | ~$0.016      |
| Generic customs manual² (Technical)  |  ES  |  0.9  |    11,996 |      4,765 |  **2.52×**  |    0.8942    | ~$0.018      |

[survey]: https://arxiv.org/abs/2303.18223
[aiayn]: https://arxiv.org/abs/1706.03762

> ¹ Estimated saving for `claude-sonnet-4-6` input tokens only. See methodology note above.
> ² Synthetic test dataset modeled after Argentine customs documentation (Código Aduanero, NCM, ARCA/DGA). Not a real operational document.

<details>
<summary>📋 Hardware benchmarks (click to expand)</summary>

> **Community-maintained — no verified numbers yet.**
> If you run llm-zip on real hardware, please submit your results via PR.

| Hardware | Model | Tokens | Time |
| :------- | :---: | :----: | :--- |
| —        |   —   |   —    | —    |

</details>

<details>
<summary>📋 Use-case benchmarks (click to expand)</summary>

> **Community-maintained — no verified numbers yet.**
> If you use llm-zip in a real workload, please submit your results via PR.

| Use case | Tokens In | Ratio | Preservation | Est. Saving |
| :------- | :-------: | :---: | :----------: | :---------- |
| —        |     —     |   —   |      —       | —           |

</details>

---

## Limitations & Caveats

- **Language support** — LLMLingua-2 was trained on English meeting transcripts. Spanish and other languages work but may see 10–15% lower compression quality. Community benchmarks are welcome.
- **Extractive compression** — tokens are removed, not rewritten. Some nuance may be lost at aggressive ratios (above 0.7).
- **Pricing accuracy** — savings are *estimates*. Non-OpenAI tokenizers use a character-ratio heuristic with a ±10% margin of error.
- **Format loss** — file conversion extracts plain text only. Layout, tables, and complex formatting are not preserved.
- **Production testing** — this is v0.2.0. Concurrent batch processing should be monitored closely in high-throughput environments.

---

## Contributing

The most valuable contributions right now are benchmark results across different languages, domains, and models. If you use llm-zip in a real project, a PR with your numbers helps everyone calibrate expectations.

Bug reports, feature requests, and code contributions are also welcome — see [CONTRIBUTING.md](CONTRIBUTING.md).

```bash
git clone https://github.com/finktech-dev/llm-zip.git
cd llm-zip
pip install -e ".[dev]"
pytest
```

---

## License & Disclaimer

MIT © [FinkTech](https://github.com/finktech-dev)

Built utilizing [LLMLingua-2](https://github.com/microsoft/LLMLingua) and [MarkItDown](https://github.com/microsoft/markitdown) open-source libraries.

*This project is an independent, community-driven open-source tool. It is not affiliated with, endorsed by, or sponsored by Microsoft Corporation, OpenAI, Anthropic, or any other LLM provider. All trademarks and registered trademarks are the property of their respective owners.*
