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Product

Prompt Optimizer

Prompt Optimizer is an open-source AI app, launched in 2025, made for developers and people who don't write code.

A tool for rewriting, testing and comparing prompts, on the web, desktop or as a browser extension.

Main jobs: Prompt optimization. It is open source and free to use. You can use it in the browser, as a desktop app, as a browser extension and on your own server.

Visit prompt.always200.com

Markdown version of https://godooo.ai/en/product/prompt-optimizer. Every page on this site has one: add .md to its address.

At a glance

Launched
2025
Pricing
Open source, free
Open source
Yes
GitHub stars
35,590
How you run it
Web · Desktop · Browser extension · Self-host
Made for
Developers · No-code users
Also known as
提示词优化器

What it can do

  • Prompt optimizationmain jobunconfirmed

    “Prompt Optimizer is a powerful AI prompt optimization tool that helps you write better AI prompts and improve the quality of AI outputs.”— github.com, 2026-09-24

unconfirmedproposed by a machine, awaiting calibration

Alternatives

Connections

Questions

What is Prompt Optimizer?

Prompt Optimizer is an open-source AI app, launched in 2025, made for developers and people who don't write code. A tool for rewriting, testing and comparing prompts, on the web, desktop or as a browser extension.

Is Prompt Optimizer free?

Yes. Prompt Optimizer is open source and free to use.

Is Prompt Optimizer open source?

Yes. The source code is at https://github.com/linshenkx/prompt-optimizer.

Can Prompt Optimizer run locally?

Prompt Optimizer can be self-hosted on your own server.

What can Prompt Optimizer do?

Main jobs: Prompt optimization.

What are open-source alternatives to Prompt Optimizer?

Open-source ones: prompts.chat, DSPy, Fabric, Langfuse and Phoenix.

Sources