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Coding super-intelligence to find the most optimized Python code. Use it to optimize existing codebases or new Pull requests as a GitHub Action or a VS Code Extension.
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Kevin Turcios e721d8da03 test: add Java test suite and update existing tests 
Add comprehensive Java test suite (648 unit tests + 11 E2E tests):
- test_languages/test_java/: parser, context, discovery, replacement,
  instrumentation, comparator, line_profiler, run_and_parse, etc.
- test_java_e2e.py: end-to-end pipeline tests
- test_java_assertion_removal.py, test_java_test_discovery.py
- Update existing Python/JS tests for protocol changes
2026-03-02 21:12:12 -05:00
.claude docs: document LanguageSupport protocol methods in architecture.md 2026-03-02 07:07:47 -05:00
.codex chore: update tessl agent config files 2026-02-18 20:23:23 -05:00
.gemini chore: update tessl agent config files 2026-02-18 20:23:23 -05:00
.github/workflows ci: add Java CI workflows and optimize workflow template 2026-03-02 20:02:43 -05:00
code_to_optimize feat: add Java sample project and test fixtures 2026-03-02 20:02:27 -05:00
codeflash test: add Java test suite and update existing tests 2026-03-02 21:12:12 -05:00
codeflash-benchmark refactor: update shared infrastructure for multi-language support 2026-03-02 21:11:26 -05:00
codeflash-java-runtime feat: add codeflash-java-runtime library 2026-03-02 20:02:19 -05:00
docs docs: add Java support architecture documentation 2026-03-02 20:02:33 -05:00
experiments fix: lint issues in experiments folder and format fixes 2026-01-29 19:26:50 +05:30
packages/codeflash Merge branch 'main' into fix/jest-junit-and-misc 2026-03-02 22:46:13 +05:30
tests test: add Java test suite and update existing tests 2026-03-02 21:12:12 -05:00
.gitignore chore: add tree-sitter-java dependency and update lockfile 2026-03-02 20:02:52 -05:00
.mcp.json Add MCP config for .mcp.json 2026-02-15 00:20:41 +00:00
.pre-commit-config.yaml update versions 2026-02-03 17:17:57 -05:00
CLAUDE.md rework duplicate-code-detector a bit. 2026-02-23 08:16:43 -05:00
codeflash.code-workspace improve codeflash debugging 2025-06-26 15:00:35 -07:00
LICENSE fix: update license format to use license-files 2026-02-17 05:54:21 +00:00
MULTI_LANGUAGE_ARCHITECTURE.md refactor 2026-02-11 02:05:54 +05:30
mypy_allowlist.txt fix: update mypy_allowlist.txt paths for moved static analysis modules 2026-02-19 04:45:24 -05:00
pyproject.toml chore: add tree-sitter-java dependency and update lockfile 2026-03-02 20:02:52 -05:00
README.md release/v0.17.0 (#756) 2025-09-23 14:02:30 -07:00
SECURITY.md Create SECURITY.md 2025-08-06 18:50:57 -07:00
tessl.json chore: update tessl tiles and upgrade dependencies 2026-02-18 20:23:23 -05:00
uv.lock chore: add tree-sitter-java dependency and update lockfile 2026-03-02 20:02:52 -05:00

README.md

Codeflash-banner

GitHub commit activity PyPI Downloads PyPI Downloads

Codeflash is a general purpose optimizer for Python that helps you improve the performance of your Python code while maintaining its correctness. It uses advanced LLMs to generate multiple optimization ideas for your code, tests them to be correct and benchmarks them for performance. It then creates merge-ready pull requests containing the best optimization found, which you can review and merge.

How to use Codeflash -

  • Optimize an entire existing codebase by running codeflash --all
  • Automate optimizing all future code you will write by installing Codeflash as a GitHub action.
  • Optimize a Python workflow python myscript.py end-to-end by running codeflash optimize myscript.py

Codeflash is used by top engineering teams at Pydantic (PRs Merged), Roboflow (PRs Merged 1, PRs Merged 2), Unstructured (PRs Merged 1, PRs Merged 2), Langflow (PRs Merged) and many others to ship performant, expert level code.

Codeflash is great at optimizing AI Agents, Computer Vision algorithms, PyTorch code, numerical code, backend code or anything else you might write with Python.

Installation

To install Codeflash, run:

pip install codeflash

Add codeflash as a development time dependency if you are using package managers like uv or poetry.

Quick Start

  1. To configure Codeflash for a project, at the root directory of your project where the pyproject.toml file is located, run:

    codeflash init
    • It will ask you a few questions about your project like the location of your code and tests
    • Ask you to generate an API Key to access Codeflash's LLMs
    • Install a GitHub app to open Pull Requests on GitHub.
    • Ask if you want to setup a GitHub actions which will optimize all your future code.
    • The codeflash config is then saved in the pyproject.toml file.

  2. Optimize your entire codebase:

    codeflash --all

    This can take a while to run for a large codebase, but it will keep opening PRs as it finds optimizations.

  3. Optimize a script:

    codeflash optimize myscript.py

Documentation

For detailed installation and usage instructions, visit our documentation at docs.codeflash.ai

Demo

  • Optimizing the performance of new code for a Pull Request through GitHub Actions. This lets you ship code quickly while ensuring it remains performant.

https://github.com/user-attachments/assets/38f44f4e-be1c-4f84-8db9-63d5ee3e61e5

  • Optiming a workflow end to end automatically with codeflash optimize

https://github.com/user-attachments/assets/355ba295-eb5a-453a-8968-7fb35c70d16c

Support

Join our community for support and discussions. If you have any questions, feel free to reach out to us using one of the following methods:

License

Codeflash is licensed under the BSL-1.1 License. See the LICENSE file for details.