Prompt
Engineering
IDE
Forge better prompts for
LLM-powered apps, agents,
and workflows.
Collaborate without friction
Requires a screen with 12" or larger
Test prompts with 15 APIs and 150+ LLMs, or simply configure your own.
Compose
prompts
Promptmetheus breaks prompts down into LEGO-like blocks for better composability, e.g. Context ⇢ Task ⇢ Instructions ⇢ Samples (shots) ⇢ Primer. You can play with different variations for each section and systematically fine-tune your prompts for minimal cost and maximum performance.
Test
reliability
The Prompt IDE includes a range of tools to evaluate your prompts under various conditions. For instance, Datasets enable rapid iteration with different inputs, while completion Ratings and the respective visual statistics help gauge output quality.
Optimize
performance
End-to-end performance and reliability of prompt chains (agents) depend heavily on the accuracy of each prompt in the sequence. Errors can compound and compromise the final output. Promptmetheus can help you optimize each prompt in the chain to consistently generate great completions.
Collaborate
without friction
In addition to private workspaces for each user, Team accounts offer shared workspaces that enable prompt engineering teams to collaborate in real-time on their projects and develop a shared prompt library for LLM-augmented apps, services, and workflows.
“The hottest new programming language is English.”
— Andrej Karpathy
Apps
Agents
Workflows
Automations
Prompt Composition
Compose structured prompts from sections and rapidly iterate through different variations.
Prompt Variables
Define variables at project or prompt level to keep recurring details flexible and consistent.
Prompt Evaluators
Set up custom evaluators and automatically validate each completion against the specified constraints.
Model Catalog
Test your prompts with 150+ cutting-edge LLMs and fine-tune model parameters for optimal results.
Projects
Organize prompts, datasets, and completions into projects and track relevant statistics on the dashboard.
Test Datasets
Use datasets to test with dynamic context and simulate user data or retrieved content.
Completion Ratings
Rate completion quality and visualize results broken down by model and used variants.
Cost Calculation
Estimate inference costs for completions based on different models, inputs, and configurations.
Full Traceability
Trace every change in your prompt-design workflow with detailed versioning and changelogs.
Stats & Insights
Surface hidden patterns and correlations to increase efficiency during the prompt design process.
Real-time Sync
Sync changes to your prompt library in real-time with other devices and team members.
Data Export
Export prompts and completions in .txt, .csv, .xlsx, or .json format.
Models
The right LLM for every use case
Claude 4.5
Haiku, Sonnet, Opus
Gemini 2.5
Flash, Flash Lite, Pro
Gemini 2.0
Flash, Flash Lite
GPT-5
Base, Nano, Mini, Pro
And more...
Magistral
Small 1.2, Medium 1.2
Mistral
Small 3.2, Medium 3/3.1, Large 2.1/3
Grok 4.1
Fast, Fast Reasoning
Grok 4
Base, Fast, Fast Reasoning
DeepSeek 3.2
Chat, Reasoner
Meta
Llama 4
Scout 17B 16e, Maverick 17B 128e
Meta
Llama 3
3.1 8B, 3.3 70B
ASI:One
Mini, Fast, Extended
Anthropic
Claude 4.5
Haiku, Sonnet, Opus
Venice
Small, Medium, Large
Moonshot AI
Kimi K2 Thinking
Alibaba
Qwen 3 235B A22B
Instruct, Thinking
Moonshot AI
Kimi K2
Instruct, Thinking
Alibaba
Qwen 3
14B, 30B A3B, 32B, 235B A22B
Meta
Llama 4
Scout 17B 16e, Maverick 17B 128e
Meta
Llama 3
3.1 8B, 3.1 70B, 3.2 1B, 3.2 3B, 3.3 70B
And more...
“There will be two kinds of businesses at the end of this decade: those who are fully utilizing AI, and those who are out of business.”
— Peter Diamandis
Pricing
Simple pricing for individuals and teams of all sizes
- Forge
- 1 user
- Local data storage
- OpenAI models
- Stats & Insights
- Data import / export
- Community support
- Prompt IDE
- 1 user
- Cloud sync between devices
- 15 providers and 150+ models
- Multiple projects
- Automatic evaluators
- Prompt history and full traceability
- Stats & Insights
- Data export
- Dedicated support
- Prompt IDE
- 3 users included
- $19/month per additional user
- All Single features, plus
- User management
- Shared workspace with real-time collaboration
- Business support
Secure payments powered by Stripe.
Subscriptions do not include a budget for inference, you need to provide your own API keys.
For Enterprise plans and special requests, please get in touch.
What is Prompt Engineering?
How is Promptmetheus different from the playgrounds provided by OpenAI, Anthropic, etc.?
How is Promptmetheus different from other prompt engineering tools?
Can I build AI agents with Promptmetheus?
Can I use Promptmetheus together with LangChain, LangFlow, and other AI agent builders?
What is the difference between Forge and Archery?
Does Promptmetheus integrate with automation tools like Make, Zapier, IFTTT, and n8n?
FAQ
If you have any other questions,
please just ask.
We're here to help.