promptolution
A unified, modular Framework for Prompt Optimization
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Promptolution is a unified, modular framework for prompt optimization designed for researchers and advanced practitioners. It focuses on the optimization stage, providing a clean, transparent, and extensible API for simple prompt optimization for various tasks. It supports many current prompt optimizers, unified LLM backend, response caching, parallelized inference, and detailed logging for post-hoc analysis.
README:
Promptolution is a unified, modular framework for prompt optimization built for researchers and advanced practitioners who want full control over their experimental setup. Unlike end-to-end application frameworks with high abstraction, promptolution focuses exclusively on the optimization stage, providing a clean, transparent, and extensible API. It allows for simple prompt optimization for one task up to large-scale reproducible benchmark experiments.
- Implementation of many current prompt optimizers out of the box.
- Unified LLM backend supporting API-based models, Local LLMs, and vLLM clusters.
- Built-in response caching to save costs and parallelized inference for speed.
- Detailed logging and token usage tracking for granular post-hoc analysis.
Have a look at our Release Notes for the latest updates to promptolution.
pip install promptolution[api]
Local inference via vLLM or transformers:
pip install promptolution[vllm,transformers]
From source:
git clone https://github.com/automl/promptolution.git
cd promptolution
poetry install
Start with the Getting Started tutorial: https://github.com/automl/promptolution/blob/main/tutorials/getting_started.ipynb
Full docs: https://automl.github.io/promptolution/
| Name | Paper | Init prompts | Exploration | Costs | Parallelizable | Few-shot |
|---|---|---|---|---|---|---|
CAPO |
Zehle et al., 2025 | required | π | π² | β | β |
EvoPromptDE |
Guo et al., 2023 | required | π | π²π² | β | β |
EvoPromptGA |
Guo et al., 2023 | required | π | π²π² | β | β |
OPRO |
Yang et al., 2023 | optional | π | π²π² | β | β |
-
Taskβ Manages the dataset, evaluation metrics, and subsampling. -
Predictorβ Defines how to extract the answer from the model's response. -
LLMβ A unified interface handling inference, token counting, and concurrency. -
Optimizerβ The core component that implements the algorithms that refine prompts. -
ExperimentConfigβ A configuration abstraction to streamline and parametrize large-scale scientific experiments.
Open an issue β create a branch β PR β CI β review β merge.
Branch naming: feature/..., fix/..., chore/..., refactor/....
Please ensure to use pre-commit, which assists with keeping the code quality high:
pre-commit install
pre-commit run --all-files
We encourage every contributor to also write tests, that automatically check if the implementation works as expected:
poetry run python -m coverage run -m pytest
poetry run python -m coverage report -i
Developed by Timo HeiΓ, Moritz Schlager, and Tom Zehle (LMU Munich, MCML, ELLIS, TUM, Uni Freiburg).
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