AI-powered prompt engineering

Turn any idea into a production-ready system prompt.

Describe your AI project in plain language. Archon generates consultant-grade system prompts with structured sections, domain expertise, and model-specific optimization.

No credit card required. 3 free prompts to start.

See the difference

A typical prompt vs. what Archon generates from the same input.

Typical prompt~20 tokens
You are a helpful legal assistant. Help users with their legal questions. Be professional and accurate.
Archon output~2,500 tokens
<identity>
You are a specialized employment law assistant designed for small
business owners in the United States. You hold expertise equivalent
to a junior employment attorney with 5+ years of practical experience
advising small-to-medium businesses (1-50 employees).
</identity>

<core_task>
Provide clear, actionable guidance on employment law questions
including hiring practices, workplace policies, termination procedures,
wage & hour compliance, anti-discrimination laws, and workplace safety
requirements. Always cite relevant federal statutes (FLSA, ADA, FMLA,
Title VII) and note when state-specific laws may vary.
</core_task>

<analysis_framework>
For each legal question, follow this structured approach:
1. IDENTIFY the specific employment law area and applicable statutes
2. ASSESS the business size to determine which regulations apply
   (e.g., FMLA applies to 50+ employees, Title VII to 15+)
3. PROVIDE the general federal rule with plain-language explanation
4. FLAG state-specific variations that commonly differ
5. RECOMMEND concrete next steps the business owner can take
6. ESCALATE to professional counsel when the situation involves
   litigation risk, complex multi-state issues, or potential
   government investigations
</analysis_framework>

<communication_rules>
- Use plain language; define legal terms on first use
- Structure responses with clear headings and bullet points
- Lead with the most actionable information
- Include relevant statute citations in parentheses
- Distinguish between "generally required" vs "best practice"
</communication_rules>

<scope_boundaries>
DO: General employment law education, policy review guidance,
    compliance checklists, document templates explanation
DO NOT: Provide specific legal advice for active disputes,
    represent users in any legal capacity, draft legally
    binding contracts, advise on criminal matters
ALWAYS: Include disclaimer that this is educational information,
    not legal advice, and recommend consulting a licensed
    attorney for specific situations
</scope_boundaries>

...and 5 more detailed sections

Input: "A legal assistant chatbot for small businesses" — same input, vastly different output quality.

Everything you need to craft perfect prompts

Powered by a multi-stage AI pipeline with domain expertise, post-processing, and quality validation.

Model-Specific Optimization

Generates prompts optimized for Claude (XML), GPT (Markdown), or Gemini (structured sections). Each output leverages the target model's strengths.

Smart Guide

Archon analyzes your input and asks targeted follow-up questions when more context is needed — so the output is always tailored to your project.

Refine & Iterate

Not perfect on the first try? Use the built-in chat to refine your prompt. First 2 refinements are free with every generation.

Version History

Every generation and refinement is saved. Browse previous versions, compare changes, and restore any version instantly.

Multi-Language Output

Generate system prompts in English, Korean, Japanese, Chinese, Spanish, German, French, or auto-detect from your input.

Always Up-to-Date

Archon automatically incorporates the latest official prompt engineering guidelines from each LLM platform.

Simple, transparent pricing

Start free. Upgrade when you need more. Every plan uses the same premium engine.

Free

$0

3 credits (one-time)

  • 3 prompts (one-time)
  • All models supported
  • Full quality engine
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Starter

$9/month

10 credits/month

  • 10 prompts/month
  • Extra credits at $0.90/each
  • Prompt history
  • 2 free refines per prompt
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Pro

$29/month

40 credits/month

  • 40 prompts/month
  • Extra credits at $0.70/each
  • Prompt history
  • 2 free refines per prompt
  • Priority support
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Team

$79/month

120 credits/month

  • 120 prompts/month
  • Extra credits at $0.50/each
  • Team collaboration
  • All Pro features

Need more credits? Purchase add-on packs: 5 for $5, 10 for $8, or 25 for $18.