Prompt
Engineering
IDE

Forge better prompts for your
LLM-powered applications, agents,
and workflows.

Compose advanced prompts

Test prompt reliability

Optimize prompt performance

Collaborate with your team

Supports 100+ LLMs
and 15 inference APIs

Compose
Advanced Prompts

Promptmetheus breaks prompts down into LEGO-like blocks for better composability, e.g. ContextTaskInstructionsSamples (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.

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.

Traceability

Track and reconstruct the complete prompt design process.

Evaluators

Define evaluators and automatically validate completions.

Cost Estimation

Estimate inference costs for different configurations and scenarios.

Data Export

Export prompts and completions in .txt, .csv, .xlsx, or .json format.

Analytics

Analyze prompt performance with statistics, charts, and insights.

Promptmetheus concept meme

Models

We support all the latest LLMs and APIs

Anthropic

Claude 4.1 Opus

Claude 4 Opus

Claude 4 Sonnet

Claude 3.7 Sonnet

Claude 3.5 Sonnet

Claude 3.5 Haiku

Claude 3 Opus

Claude 3 Sonnet

Claude 3 Haiku

DeepMind

Gemini 2.5 Pro

Gemini 2.5 Flash

Gemini 2.0 Flash Light

Gemini 2.0 Flash

Gemini 1.5 Pro

Gemini 1.5 Flash

OpenAI

o4 mini

o3

o3 pro

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

xAI

Grok 4

Grok 3

Grok 3 fast

Grok 3 mini

Grok 3 mini fast

Grok 2

Mistral

Magistral Medium

Magistral Small

Mistral Large 2.1

Mistral Medium 3

Mistral Small 3.2

Mistral Nemo

Ministral 8b

Ministral 3b

DeepSeek

DeepSeek R1

DeepSeek V3

Moonshot AI

Kimi K2

Cohere

Command A

Command R+

Command R

Command R 7b

Command

Command Light

Perplexity

Sonar Deep Research

Sonar Reasoning Pro

Sonar Reasoning

Sonar Pro

Sonar

R1 1776

AI21 Labs

Jamba 1.7 Large

Jamba 1.7 Mini

FetchAI

asi1-mini

Venice

Venice Uncensored

Alibaba Qwen 3

DeepSeek R1

Groq

Compound Beta

Compound Beta Mini

OpenAI GPT-OSS 120B

OpenAI GPT-OSS 20B

Moonshot AI Kimi K2

DeepSeek R1 Distill Llama 70B

DeepSeek R1 Distill Qwen 32B

Alibaba Qwen 3 32B

Meta Llama 4 Maverick 17B 128e

Meta Llama 4 Scout 17B 16e

Meta Llama 3.3

Meta Llama 3.1

Mistral Saba 24B

Google Gemma 2

Deep Infra

OpenAI GPT-OSS 120B

OpenAI GPT-OSS 20B

Moonshot AI Kimi K2

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

Google Gemma 3

Microsoft WizardLM

Microsoft Phi 4

OpenRouter

OpenAI GPT-OSS 120B

OpenAI GPT-OSS 20B

Moonshot AI Kimi K2

Tencent Hunyuan A13B

Baidu Ernie 4.5 300B A47B


“The hottest new programming language is English.”
— Andrej Karpathy

Pricing

Great plans for individuals and teams

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
  • 12 providers and 100+ models
  • Multiple projects
  • Automatic evaluators
  • Prompt history and full traceability
  • Stats & Insights
  • Data export
  • Dedicated support

Team

Starting at
$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

You can cancel subscriptions any time.

Subscriptions do not include 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 OpenAI and other 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?

FAQ

If you have any open questions,
please get in touch.

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