What it is
Refining the prototype with detailed interactions, visual design, realistic content, and design system components, to approximate the final experience.
Why use it
High-fidelity prototypes let teams check visual, interaction, and content decisions before development, and are a main input to the handoff specification.
Use this when
- Core workflows are validated at low fidelity
- Stakeholders need a realistic preview to give useful feedback
- Engineering needs detailed specifications before building
You may not need this when
- The product is simple and low fidelity suffices
- Developer iteration is faster for this change
- The design system covers the components without customization
Dependencies — what you need
- Validated low-fidelity flows
- Design system components and tokens
- Content, copy, and UX writing direction
People involved
- Design
- Content / UX Writing
- Product
Typical outputs
- A high-fidelity interactive prototype
- Specifications and redlines
- Component documentation
- Annotated edge cases and interaction details
Template
Hi-Fi Prototyping template
A fill-in structure for running this method: what to prepare, what to do, what to record, and how to read the result.
How AI can help
AI as augmentation — not replacement
- Generate realistic placeholder content: names, data, errors, empty states
- Raise accessibility points to check during design
- Draft UX copy for buttons, labels, tooltips, and errors
- Review consistency with design system patterns
AI prompt
A prompt for any AI assistant. It works only from material you paste in, keeps assumptions apart from findings, and leaves the decisions to you.