Frequently Asked Questions

Everything you need to know about mastering AI communication.

What makes a good prompt?
A good prompt is highly specific, provides necessary context, sets clear constraints, and defines the exact output format. Instead of leaving room for interpretation, a good prompt acts as a strict set of instructions. It tells the AI exactly who it is acting as, who the audience is, what tone to use, and what specific information to include or exclude. The less the AI has to guess, the better the output will be.
How is Prompt Foundry different from just asking AI directly?
When you ask an AI directly, you are usually typing off the top of your head, which leads to vague, unstructured requests. Prompt Foundry forces you to slow down and think through the critical components of your request using proven frameworks (CRAFT, RISE, CO-STAR, CARE, or TAG). We provide the scaffolding so you don't forget to include crucial context or constraints, resulting in a highly engineered prompt that yields professional-grade results on the first try.
Can I use this for work or school projects?
Absolutely. In fact, professional and academic use cases are where structured prompting shines the brightest. Whether you are drafting corporate communications, generating code, analyzing data, or structuring a research paper, using our frameworks ensures the AI adheres to professional standards, maintains the correct tone, and avoids the generic 'AI voice' that is often inappropriate for formal settings.
What types of prompts can I improve with this tool?
You can improve almost any text-based prompt. This includes content creation (blogs, emails, social media), technical tasks (coding, debugging, architecture planning), analytical tasks (summarizing reports, extracting data), and creative brainstorming. The frameworks we use are universally applicable because the fundamental rules of clear communication apply regardless of the specific task.
Is there a cost?
No. Prompt Foundry is completely free. Every framework, guide, and tip is available without a paywall or sign-up wall. There are no premium tiers and no subscriptions — what you see is the full product.
Which framework should I start with — CRAFT, RISE, CO-STAR, CARE, or TAG?
Start with TAG (Task, Action, Goal) if you've never thought about prompt structure before. It only has three slots and forces you to articulate the thing you actually want. Reach for CRAFT (Context, Role, Action, Format, Task) when you want a long, well-structured piece — blog posts, launch announcements, brand storytelling. Use CO-STAR (Context, Objective, Style, Tone, Audience, Response) when the wording matters as much as the content — sensitive messages, persuasion. Move to CARE (Context, Action, Result, Example) when you need precise output formats — JSON shapes, code conventions, strict tone. Reach for RISE (Role, Input, Steps, Expectation) for longer, multi-step assignments where the AI needs both a persona and a procedure. Most people end up using several for different jobs once they're comfortable.
Do longer prompts always produce better results?
No, and this is a common misconception. Length is a side effect of clarity, not a goal. A 50-word prompt that names the role, the audience, the format, and one constraint will outperform a 500-word prompt full of polite hedging and overlapping instructions. We've seen prompts where the user repeats themselves three times and then contradicts an earlier rule at the end — the model honours whichever rule it pays attention to last. Aim for short, ordered, unambiguous.
Why does the same prompt give different answers each time?
Large language models are non-deterministic by design — they sample from a distribution of plausible next tokens, so two runs of the same prompt rarely match exactly. You can reduce variance by being more specific (more constraints narrow the space of valid answers), by setting a lower temperature in the API if you have access, or by re-running and picking the best output. For tasks that absolutely must be reproducible — like generating code or structured data — give the model a strict output schema and an example to copy.
How long does it take to write a better prompt?
Initially, using a structured framework might take you 2-3 minutes longer than typing a quick, vague sentence. However, this upfront investment saves you 15-30 minutes of frustrating back-and-forth trying to correct the AI's mistakes. As you become familiar with the frameworks, structuring your thoughts will become second nature, and you'll be able to draft highly effective prompts in seconds.
Do these prompts work on all AI models?
Yes. The principles of good prompt engineering—clarity, context, constraints, and formatting—are model-agnostic. Whether you are using ChatGPT (OpenAI), Claude (Anthropic), Gemini (Google), or open-source models like Llama, they all respond significantly better to structured, explicit instructions. While some models have specific quirks, a well-structured prompt will universally improve your baseline results.

Written and maintained by Marty Ytreberg, a professor of physics and the founder of Prompt Foundry. Have a question that isn't answered here? Get in touch.