AI Tool
Promptmetheus pricing, features, company info, and alternatives
A factual product page for Promptmetheus as a prompt engineering IDE for LLM workflows.
Last updated April 2026 · Pricing and features verified against official documentation
Pricing
Current public pricing tiers on file for Promptmetheus, last verified Apr 25, 2026.
Playground
$0 / month
Free plan for Forge; includes 1 user, local data storage, OpenAI models, stats and insights, data import/export, and community support.
Single
$29 / month
Includes a 7-day free trial, cloud sync between devices, 15 providers and 150+ models, multiple projects, automatic evaluators, prompt history, full traceability, stats and insights, data export, and dedicated support.
Team
$99 / month
Includes 3 users, all Single features, shared workspace collaboration, business support, and $19/month per additional user.
What You Can Do With It
The main capabilities that shape how people use Promptmetheus today.
Breaks prompts into structured blocks and variations so teams can iterate on prompt composition more systematically.
Combines datasets, ratings, statistics, and automatic evaluators to test prompt reliability inside the same web workspace.
Tracks prompt and evaluator version history so teams can trace which setup produced each completion.
Supports 15 providers, 150+ listed models, and custom OpenAI- or OpenRouter-style providers with bring-your-own API keys.
Best For
Who Promptmetheus is most clearly built for.
Prompt engineers or developers comparing prompt variants across many third-party LLM APIs in one browser-based tool.
Teams that need shared workspaces and collaboration around prompt libraries rather than isolated provider playgrounds.
Buyers who want evaluation helpers, cost estimation, and prompt traceability without committing to a managed inference budget.
Model Notes
Current model information surfaced publicly for Promptmetheus.
Model
Claude 4.6
Model
GPT-5.4
Model
Grok 4.1
Model
DeepSeek 3.2
Company
Leadership and company context for Promptmetheus.
Founders
Toni Engelhardt
Platforms
Where you can use Promptmetheus today.
Web
Integrations
Notable connected tools and ecosystem hooks for Promptmetheus.
OpenAI
Anthropic
Google / DeepMind
Mistral
Perplexity
xAI
OpenRouter
Custom OpenAI-compatible providers
Privacy Notes
Publicly stated data-handling notes that matter when evaluating Promptmetheus.
The privacy policy says prompts, datasets, embeddings, and other general app data are stored in Promptmetheus databases and may be accessed by staff to maintain and improve the service, analyze usage, and provide support.
The API keys documentation says provider API keys are stored locally in the browser and routed directly to the selected provider rather than synced through the service.
The privacy policy says Promptmetheus currently stores submitted data and logs on DigitalOcean and Vercel, and selected LLM providers may also store and process request data and metadata.
Compliance
Public compliance or enterprise-governance signals we found for Promptmetheus.
GDPR
Access
How to integrate or build around Promptmetheus.
Public API
No
Alternatives
Other tools worth considering alongside Promptmetheus.
Open-source CLI and library for evaluating and red-teaming LLM apps.
Open-source LLMOps platform for prompt management, evaluation, and observability.
Framework-agnostic platform for observability, evaluation, and deployment of AI agents and LLM apps.
AI observability and evaluation platform for tracing, scoring, and improving production AI applications.
Product Snapshot
Promptmetheus is a web-based prompt engineering environment for building, testing, and organizing LLM prompts. Its public product surface centers on structured prompt composition, multi-provider model access, prompt evaluations, and team workspaces.
What You Can Do With It
- Compose prompts from reusable blocks and iterate through different variants inside the IDE.
- Run prompts against supported providers or custom OpenAI-compatible providers using your own API keys.
- Use datasets, completion ratings, statistics, and evaluators to compare outputs and check prompt reliability.
- Organize work into projects and, on Team accounts, collaborate in shared workspaces with other members.
Why It Stands Out
Promptmetheus focuses narrowly on prompt-development workflow rather than bundling managed inference or broader agent operations. The product combines structured prompt editing, model comparison, version history, and built-in evaluation helpers in one browser interface.
Tradeoffs To Know
- The free Playground plan is limited to Forge, one user, local data storage, and OpenAI models.
- Team collaboration is tied to the Team plan rather than the Single plan.
- Promptmetheus does not currently expose a public prompt-endpoint API; the Endpoints documentation says that area is still under internal testing.