Installation

From PyPI

pip install llm-parry

uv add llm-parry

poetry add llm-parry

The distribution is called llm-parry. The module you import, and the CLI command, are both parry.

parry ships as one abi3 wheel per platform, so a single wheel works on Python 3.10, 3.11, 3.12, 3.13 and 3.14. Wheels are built for:

OS	Architectures
Linux (manylinux, musllinux)	x86-64, aarch64
macOS	x86-64, Apple silicon
Windows	x64

Extras

parry has no required dependencies. It hooks whichever SDKs are importable. The extras are a convenient way to install them alongside:

pip install "llm-parry[openai]"       # + openai
pip install "llm-parry[anthropic]"    # + anthropic
pip install "llm-parry[langchain]"    # + langchain-core
pip install "llm-parry[llamaindex]"   # + llama-index-core

Supported SDK versions

Package	Tested range
`openai`	1.82 → 2.x
`anthropic`	0.52 → 2.x
`langchain-openai` / `langchain-anthropic`	current
`llama-index-core` / `llama-index-llms-openai`	current

CI runs the full suite against the newest releases and a pinned older pair, so SDK changes that break a hook show up as test failures, not in your app.

From source

You need a Rust toolchain (the version is pinned in rust-toolchain.toml, and rustup picks it up automatically) and Python 3.10+.

Install the latest main straight from GitHub:

pip install "git+https://github.com/IND-Anshuman/parry.git"

Or clone it for development:

git clone https://github.com/IND-Anshuman/parry.git
cd parry
python -m venv .venv && source .venv/bin/activate
pip install maturin
pip install -e ".[dev,integrations]"   # builds the Rust extension
pytest

Verify the install

python -c "import parry; print(parry.__version__)"
parry pricing --provider anthropic