Practice prompt engineering
on your own model keys.

Evaluate and rewrite prompts, see what they cost across models, and work through a curriculum built around a topic you choose.

Bring your own model keys
OpenAI, Anthropic, Gemini, Groq, DeepSeek or Mistral. Inference is billed by your provider, never resold.
Keys encrypted at rest
Decrypted only in memory for a single request. Never shown again, and never visible to administrators.
Progress from real work
Skill averages and score trends built from prompts you actually evaluated, not sample data.

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Free to use. You will connect a model provider key next.

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