Get 100 free credits to start.
All the leading AI providers
Customer behaviors from angry customers to interested ones, technical users to casual inquirers.
Generate and Review hundreds of AI conversations to identify patterns and edge cases quickly.
Evaluate conversations with detailed metrics and get actionable insights to improve your prompts.
Collaborate with your team by sharing test results and insights to improve prompt performance together.
Spoiler: It's easy.
Enter your system prompt and define the customer personas you want to test with.
Our AI will simulate multiple conversations using different customer behaviors and scenarios.
Review the generated conversations and analytics to optimize your prompt performance.
"We reduced prompt engineering time by 60% using PromptKing's simulation feature. Now we can identify edge cases before they become problems in production."
Sarah Johnson
AI Product Manager
"The batch testing feature saved us from a major issue. We discovered our system prompt had a vulnerability when faced with specific user behaviors that we hadn't considered."
Michael Chen
Prompt Engineer
"PromptKing's analytics helped us identify patterns in how different customer personas interact with our AI. We've improved our prompt success rate by 42% after just two weeks."
Emily Rodriguez
AI Research Lead
"Before PromptKing, we were manually testing prompts. Now we simulate thousands of conversations overnight and identify problematic scenarios automatically. It's transformed our workflow."
David Kim
CTO, AI Solutions
"The range of user personas that PromptKing can simulate is impressive. We've found edge cases with 'difficult' customers that would have been a nightmare to discover in production."
James Wilson
AI Operations Manager
"Being able to share simulation results with stakeholders has been a game-changer. Now our non-technical team members can understand why certain prompt changes are necessary."
Sophie Martin
Lead Developer
Pay only for what you use - transparent pricing for AI conversation simulations
€37
/mo €49Billed annually €444
1,000 Credits Included Monthly
100 free credits • No credit card required
€112
/mo €149Billed annually €1,344
3,500 Credits Included Monthly
Based on a typical conversation example: 50k tokens total (40k input tokens, 10k output tokens)
Example with 3,500 credits: You could run approximately 3,500 conversations with Gemini Flash or about 182 conversations with Gemini Pro, based on the example conversation length above
Need more? Add credits at €0.06 each for Professional plan
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