and all popular Inference APIs
Compose
Prompts like
a Pro
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
Prompt
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
Prompt
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.
Traceability
Track the complete history of the prompt design process.
Cost Estimation
Calculate inference costs under different configurations.
Data Export
Export prompts and completions in different file formats.
Analytics
View prompt performance statistics, charts, and insights.
Prompt Chaining
Chain prompts together for advanced tasks and workflows.
Prompt Endpoints
Deploy prompts to dedicated AIPI endpoints.
Data Loaders
Inject external data sources directly into prompts.
Vector Embeddings
Add more context to prompts via vector search.
Models
Claude 3.7 Sonnet
Claude 3.5 Sonnet
Claude 3.5 Haiku
Claude 3 Opus
Claude 3 Sonnet
Claude 3 Haiku
o4 mini
o3
o3 mini
o1
o1 pro
o1 mini
GPT-4.5
GPT-4.1
GPT-4.1 mini
GPT-4.1 nano
GPT-4o
GPT-4o mini
GPT-4
GPT-4 Turbo
GPT-3.5 Turbo
DaVinci
Babbage
DeepSeek R1 Distill Llama 70B
DeepSeek R1 Distill Qwen 32B
Alibaba Qwen QwQ 32B
Alibaba Qwen 2.5 32B
Meta Llama 4 Maverick 17B 128e
Meta Llama 4 Scout 17B 16e
Meta Llama 3.3
Meta Llama 3.2
Meta Llama 3.1
Meta Llama 3
Mistral Saba 24B
Google Gemma 2
DeepSeek R1 Turbo
DeepSeek R1
DeepSeek V3
Alibaba Qwen 2.5
Alibaba Qwen 2
Meta Llama 4 Maverick 17B 128e
Meta Llama 4 Scout 17B 16e
Meta Llama 3.3
Meta Llama 3.2
Meta Llama 3.1
Meta Llama 2 HF
Mistral Nemo
Google Gemma 3
Google Gemma 2
Microsoft WizardLM
Microsoft Phi 4
“The hottest new programming language is English.”
— Andrej Karpathy
Pricing
Playground
- Forge
- 1 user
- Local data storage
- OpenAI models only
- Stats & Insights
- Data import / export
- Community support
Single
- IDE
- 1 user
- Cloud sync between devices
- All providers and models
- Stats & Insights
- Multiple projects
- Prompt history and full traceability
- Data export
- Dedicated support
Team
- IDE
- 3 users
- $19/month per additional user
- All Single features, plus
- User management
- Shared workspace with real-time collaboration
- Business support
You can cancel subscriptions any time.
Subscriptions do not include LLM completion costs, you need to provide your own API keys.
For Enterprise plans and special requests, please get in touch.
What is Prompt Engineering?
What is a Prompt IDE?
How is Promptmetheus different from the OpenAI and Anthropic playgrounds?
How is Promptmetheus different from other prompt engineering tools?
Is there an API or SDK?
Can I use Promptmetheus together with LangChain, LangFlow, and other AI agent builders?
What is the difference between Forge and Archery?
What is an AIPI?
Does Promptmetheus integrate with automation tools like Make, Zapier, IFTTT, and n8n?