SysPrompt is sunsetting: A note to our community

Over the past few months, we built SysPrompt to help developers and non-developers alike create and manage LLM prompts more easily. We believed a tool like SysPrompt was important for this new era of AI development and the growing "LLMs-for-everything" movement.

However, after careful consideration, we’ve decided to sunset SysPrompt. The product didn’t gain the traction we had hoped for, and with strong alternatives already available (including ChatGPT itself), it’s no longer efficient for us to continue operating it.

Our team is now shifting focus to building something new that we’re very excited about. SysPrompt will officially shut down on May 30, 2025. Any active subscriptions will be automatically canceled before May 2, and no further charges will be made.

We’re incredibly grateful for the support, feedback, and encouragement we've received from our community. Thank you for being part of our journey, it’s meant more than you know.

If you have any questions, feel free to reach out to us at support@sysprompt.com.

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Backed by Y Combinator

The collaborative prompt CMS for LLM engineers

Manage, version, and collaborate on prompts—so you can build better LLM apps, faster.

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Real-time chat to build your best prompt version

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Log your prompts

Get to know what is happening in your application by seeing prompts and LLM responses. Sensitive data is anonymized.

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Test performance

New LLM models? Try your prompts with multiple models from OpenAI, Anthropic, LLama and more. In one click. Upgrade your model only when quality assured.

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Collaborative tools

Work with your team, including those that are not technical and review and iterate on prompts. No need to re-deploy your application.

Collaborate with your team, and launch your prompts as web-form apps

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Collaborative Prompts

Work together seamlessly to build, review, and refine prompts as a team. Share access, gather feedback, and collaborate in real time to improve results faster.

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Web Forms for Interaction

Easily create web forms that enable your team or users to interact with prompts. Collect inputs and manage responses without coding, making collaboration intuitive and efficient.

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Shared Logs and Insights

Track prompt usage, team contributions, and interactions across your workflows. Monitor inputs, outputs, and adjustments to enhance team collaboration and overall performance.

Testing sandbox and real-time logs

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UI for testing

SysPrompt provides an interface for testing all your prompt versions.

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Multiple LLM compatibility

Test with multiple models to see how the output may change from one to another.

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Variables supported

Test your variables with real content or use the magic insert feature to populate with sample data.

Take action from insights

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Effortless Prompt Management

Easily manage and optimize your prompts without complexity. Collaborate with your team in real-time, track version history for production, and streamline your workflow—all within our user-friendly CMS.

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Real-Time Logs & Testing

Access real-time prompt logs, and run prompt evaluations and tests across multiple models instantly. Keep your team informed and ready to iterate on the fly. Improve your LLM app without code deployments.

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Automated Reports & Version Control

Let our system handle the reporting and version tracking. Receive automated updates on prompt performance, and rest easy knowing every version is saved and accessible for seamless production management.

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Collaborative Prompt Workflows

Work together like never before. Share, edit, and review prompts with your team using our multi-user collaboration tools, ensuring a smooth and efficient workflow from creation to deployment.