An AI interface may look elegant but be unusable without a mouse, by a screen-reader user or by someone who needs clear language and captions. Accessibility must be evaluated in the final product, not assumed from the model.
Start with WCAG principles
W3C’s WCAG framework organizes accessibility around perceivable, operable, understandable and robust experiences. WCAG 2.2 was published in October 2023, with a later recommendation update in December 2024. It covers familiar needs including text alternatives, keyboard operation, meaningful labels and predictable interactions. Which WCAG version is legally required depends on applicable law and procurement requirements.
Design the conversational interface
Ensure the input area and send action can be reached by keyboard, the conversation has a sensible heading and reading order, and newly generated content is announced without overwhelming assistive technology. Streaming text, busy indicators, attachment controls and error messages should be tested, not merely styled. Allow users to pause long responses, copy text and request a simpler explanation.
AI-generated content can introduce barriers
Models may create unstructured tables, image descriptions that omit essential meaning, citations that are impossible to locate, or subtitles that mishandle names. Generated alt text must be checked by someone who knows the image’s role in context. Decorative artwork may not require a descriptive paragraph; charts, controls and diagrams often do.
Test with real users and assistive technology
Automated accessibility scanners are useful, but they cannot fully judge whether a description explains a chart or whether a cognitive workflow is understandable. Include screen readers, keyboard-only navigation, zoom, high contrast, speech input and caption review when applicable. Cover multiple supported languages, which can affect pronunciation and segmentation.
Example: policy chatbot
A visitor asks for an eligibility rule. An accessible answer uses concise headings, plain language, a link to the official policy and a clear route to human assistance. The application supports full keyboard interaction and does not bury an essential warning only in a color-coded badge.
Scope note
This is product-design guidance grounded in W3C WCAG 2.2, not a claim that AI-generated content is automatically compliant or that one international accessibility statute governs every market.
Sources & Further Reading
- WCAG 2.2 overview — W3C WAI.
- WCAG 2 at a glance — W3C WAI.
- AI Playbook for the UK Government — UK Government.
Guidance varies by jurisdiction and application. This is general education, not legal, medical or other professional advice.