Structured prompt composition
Build prompts from structured sections such as Context, Task, Instructions, Samples, and Primer so you can iterate on specific parts instead of rewriting everything at once.
Promptmetheus
Freemium
A web-based prompt engineering IDE for building, testing, and optimizing LLM prompts
What is Promptmetheus?
Promptmetheus is a prompt engineering IDE for teams and individual builders working on LLM-powered applications, agents, workflows, and automations. It is designed to help users compose prompts, test reliability, and optimize performance in one workspace.
The product centers on structured prompt composition, evaluation, and collaboration. The site describes private workspaces for individual users, shared workspaces for team accounts, and a shared prompt library for real-time collaboration on prompt engineering projects.
What can Promptmetheus do?
Prompt variables
Define variables at the project or prompt level to keep recurring values flexible and consistent across prompts and datasets.
Prompt evaluators
Create custom evaluators and automatically validate each completion against the constraints you set.
Testing and evaluation tools
Test prompts against datasets, completion ratings, and visual statistics to compare outputs under different inputs and conditions.
Full traceability
Track prompt changes with detailed versioning and changelogs so you can trace how outputs evolved over time.
Data export
Export prompts and completions in `.txt`, `.csv`, `.xlsx`, or `.json` formats for reuse and analysis.
Use Cases
“Drafting structured prompts”
Compose prompts from reusable sections, adjust different variants, and keep recurring values consistent with prompt-level or project-level variables.
“Testing prompt reliability”
Run datasets, completion ratings, and custom evaluators to compare outputs and check whether a prompt meets your requirements.
“Optimizing agent workflows”
Refine prompt chains for agents and other multi-step workflows where errors can compound across the sequence.
“Collaborating on prompt projects”
Work in a private workspace as an individual or switch to a team account for shared workspaces, real-time sync, and a shared prompt library.
“Sharing and reusing outputs”
Export prompts and completions to `.txt`, `.csv`, `.xlsx`, or `.json` when you need to analyze or reuse results outside the app.
Frequently Asked Questions
What is Promptmetheus used for?
Promptmetheus is a prompt engineering IDE for composing, testing, and optimizing prompts for LLM-powered applications, agents, and workflows. It also supports prompt versioning, automatic evaluations, and collaboration features.
Which models can I test with it?
The home page says Promptmetheus supports testing prompts with 15 APIs and 150+ LLMs, and its LLM Index lists supported providers and models. The platform also allows connecting any model compatible with the OpenAI API or LiteLLM SDK.
Can teams collaborate in Promptmetheus?
Team accounts include shared workspaces for real-time collaboration and a shared prompt library. Private workspaces are also available for individual users.
How does billing work?
The support page says you can cancel a subscription from the account menu through Manage subscription, and invoices are available in the Stripe billing portal. The pricing details on the home page also note that subscriptions do not include inference budget, so you provide your own API keys.
How do I get support or move data between products?
The support page directs users to documentation and troubleshooting for technical issues, and also offers help by email and Discord. It also notes that data can be migrated from Forge to Archery by exporting from Forge and importing the project into Archery.
Quick Facts
- Category
- Prompt engineering IDE
- Primary users
- Individuals and teams building LLM prompts, agents, and workflows
- Platform
- Web app
- Source domain
- promptmetheus.com
- Pricing
- Free Playground; Single from $29/month; Team from $99/month; subscriptions require user-provided API keys
Promptmetheus Traffic Analysis
Traffic data is for reference only.
- Monthly Visits
- 21.2K
- Global Rank
- #1,297,750
- User Bounce Rate
- 39.2%
- Avg. Visit Duration
- 00:30
- Pages per Visit
- 1.93
- Domain Rating
- 45
Traffic Trends
| May | 21590 |
|---|---|
| Jun | 20768 |
| Jul | 21150 |
Traffic Sources
Traffic analytics are not available yet.
Top Regions
Traffic analytics are not available yet.
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