Prompt
Engineering
IDE
Forge better prompts for your
LLM-powered applications, agents,
and workflows.
Prompt
Connect to 15 APIs and test your prompts with 150+ models.
Compose
Prompts
Promptmetheus breaks prompts down into LEGO-like blocks for better composability, e.g. Context โข Task โข Instructions โข Samples (shots) โข 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
with your Team
In addition to private workspaces for each user, Team accounts offer shared workspaces that enable prompt engineering teams to collaborate in realtime on their projects and develop a shared prompt library for LLM-augmented apps, services, and workflows.
โThe hottest new programming language is English.โ
โ Andrej Karpathy
Full Traceability
Track every step of the prompt-design process from start to finish.
Cost calculation
Estimate inference costs for different inputs, models, and settings.
Evaluators
Automatically validate completions against specified criteria.
Insights
Analyze prompt performance with statistics and visualizations.
Data Export
Export prompts and completions as .txt, .csv, .xlsx, or .json format.
Apps
Agents
Workflows
Automations
Models
The right LLM for every use case
Claude 4.5
Haiku, Sonnet
Claude 4.1
Opus
Claude 4
Sonnet, Opus
Claude 3.7
Sonnet
Claude 3.5
Haiku
Claude 3
Haiku, Opus
o4
Mini
o3
Base, Mini, Pro
o1
Base, Pro
GPT-5
Base, Nano, Mini, Pro
GPT-4.1
Base, Nano, Mini
GPT-4o
Base, Mini
GPT-4 Turbo
GPT-3.5 Turbo
Compound
Base, Mini
OpenAI
GPT-OSS
20B, 120B
Moonshot AI
Kimi K2
Alibaba
Qwen 3
32B
Meta
Llama 4
Scout 17B 16e, Maverick 17B 128e
Meta
Llama 3
3.1 8B, 3.3 70B
DeepSeek
DeepSeek 3.1
Chat
OpenAI
GPT-OSS
20B, 120B
Moonshot AI
Kimi K2
Tencent
Hunyuan
A13B
Baidu
Ernie 4.5
300B A47B
OpenAI
GPT-OSS
20B, 120B
Moonshot AI
Kimi K2
DeepSeek
DeepSeek 3.1
Chat, Reasoner
Alibaba
Qwen 3
14B, 30B A3B, 32B, 235B A22B
Alibaba
Qwen 2
v2 72B, v2.5 72B
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
Google
Gemma 3
4B, 12B, 27B
Microsoft
Phi 4
Microsoft
WizardLM
โThere 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.โ
โ Peter Diamandis
Pricing
Simple pricing for individuals and teams of all sizes
Playground
FREE
- Forge
- 1 user
- Local data storage
- OpenAI models only
- Stats & Insights
- Data import / export
- Community support
Single
$29
/
month
7-day free trial
- 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
Team
$99
/
month
- Prompt IDE
- 3 users included
- $19/month per additional user
- All Single features, plus
- User management
- Shared workspace with real-time collaboration
- Business support
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?
What is a Prompt IDE?
How is Promptmetheus different from the playgrounds provided by OpenAI, Anthropic, etc.?
How is Promptmetheus different from other prompt engineering tools?
Is there an API or SDK?
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?
What is an AIPI?
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.