leanlab is an open-source project built for AI researchers and developers.

Does leanlab have a free plan?

Yes — leanlab is open source under the MIT license and free to use.

What platforms does leanlab run on?

leanlab runs on the command line.

Is leanlab still active?

The GitHub repository shows 42 commits in the last 90 days.

What are alternatives to leanlab?

Similar projects tracked by PulseGate include agentlint, labbench-cli, and coder-eval.

leanlab is developed by bacharSalleh.

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leanlab

Name: leanlab
Author: bacharSalleh

PyPIInfrastructure

leanlab is an open-source CLI tool designed for evolving and evaluating AI agent experiments and coding tasks. It supports experiment evolution against fixed metrics and automates the spec-to-merge workflow with locked acceptance tests, helping AI researchers and developers improve agent reliability and performance.

Open SourceMITCLI

Visit PyPI

Overview

5 features

leanlab is a LLM eval & observability project. It focuses on automating the evolution and evaluation of AI agent experiments and coding tasks for improved performance and reliability. It is built as an open-source project for AI researchers and developers. leanlab is open source under the MIT license. It runs on the command line.

It is developed by bacharSalleh, and it first shipped in 2026. Development happens publicly on GitHub with 42 commits in the last 90 days. Among its 5 catalogued features are experiment evolution, agent evaluation, and acceptance tests.

Summary written by a language model from the project’s public pages.

Experiment evolution
Agent evaluation
Acceptance tests
Spec-to-merge loop
Self-improving lab

Built with & integrations

AI providers

anthropic

Connectors

github

Runs on

CLI

Trust & compliance

License

MIT

Verified signals

HTTPSOpen SourceFree tierGitHubActive maintenance

Indexing history

What PulseGate has recorded for this listing

Indexed30 Jun · 20:38 UTC
leanlab verified against its public source
Source: PulseGate · Open

Frequently asked questions about leanlab

What is leanlab?: Leanlab focuses on automating the evolution and evaluation of AI agent experiments and coding tasks for improved performance and reliability. It is catalogued under LLM eval & observability on PulseGate.
Who is leanlab for?: leanlab is an open-source project built for AI researchers and developers.
Does leanlab have a free plan?: Yes — leanlab is open source under the MIT license and free to use.
What platforms does leanlab run on?: leanlab runs on the command line.
Is leanlab still active?: The GitHub repository shows 42 commits in the last 90 days.
What are alternatives to leanlab?: Similar projects tracked by PulseGate include agentlint, labbench-cli, and coder-eval.agentlint labbench-cli coder-eval
Who makes leanlab?: leanlab is developed by bacharSalleh.
How long has leanlab been around?: leanlab first shipped in 2026.

At a glance

Platforms: Cli
Languages: English
Open source: Yes (GitHub)
License: MIT
First seen: 30 Jun 2026
Built for: AI researchers and developers
Model: Open source
Solves: Automating the evolution and evaluation of AI agent experiments and coding tasks for improved performance and reliability.

Registered as

GitHub: bacharSalleh/leanlab
PyPI: leanlab

Developer

bacharSalleh

Small team

GitHub

Open source

View on GitHub

Stars: 0
Forks: 0
Open issues: 5
Last commit: 29 Jun 2026
Commits 90d: 42
Contributors: 2
Authorship: Small team
Default branch: main
Latest release: v0.2.4 · 27 Jun 2026

Index record

Identity confidence: Low · 64
Indexed: 30 Jun 2026
Lifecycle: Alive
First seen: Jun 2026
Last seen: 30 Jun 2026

Identity audit (12)

Slug: leanlab-pypi-org
Lifecycle last checked: 8 Aug 2026
Verification state: Indexed for public listing
Listing state: Listed: yes
Index status: Included in index
Latest evidence snapshot: 30 Jun 2026
Timeline basis: Indexed-at chronology (no inferred launch/funding milestones).
Name from: Written by a language model from the project's public pages.
Category from: Assigned by a language model.
Summary from: Written by a language model from public pages.
Languages from: Detected by a language model from page content.
Canonical URL: https://pypi.org/project/leanlab

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