Evaluating the factuality of long-form generations from Large Language Models (LLMs) remains challenging due to efficiency bottlenecks and reliability concerns. Prior efforts attempt this by decomposing text into claims, searching for evidence, and verifying claims, but suffer from critical drawbacks: (1) inefficiency due to overcomplicated pipeline components, and (2) ineffectiveness stemming from inaccurate claim sets and insufficient evidence. To address these limitations, we propose \textbf{FaStfact}, an evaluation framework that achieves the highest alignment with human evaluation and time/token efficiency among existing baselines. FaStfact first employs chunk-level claim extraction integrated with confidence-based pre-verification, significantly reducing the time and token cost while ensuring reliability. For searching and verification, it collects document-level evidence from crawled web-pages and selectively retrieves it during verification. Extensive experiments based on an annotated benchmark \textbf{FaStfact-Bench} demonstrate the reliability of FaStfact in both efficiently and effectively evaluating long-form factuality. Code, benchmark data, and annotation interface tool are available at https://github.com/Yingjia-Wan/FaStfact.

Image caption, Nuno Espirito Santo (right) is expected to succeed Graham Potter and could take charge for Monday's match at Everton West Ham are set to appoint former Nottingham Forest boss Nuno Espirito Santo after sacking head coach Graham Potter. Portuguese Nuno is expected to be in place before Monday's match against Everton, saying he has had positive talks with the West Ham board. Potter was dismissed on Saturday morning after just eight months, with the club struggling in 19th place in the Premier League. The Hammers picked up only three points from their opening five Premier League games under the Englishman. The east London club said they believe that a change is necessary in order to help improve the team's position in the Premier League as soon as possible.

On Sunday, December 18, on the pitch of Lusail Stadium in Qatar, Argentina will take on 2018 defending champions France for football's most coveted trophy. The FIFA World Cup, now in its 22nd edition, has been held every four years since 1930, except in 1942 and 1946 because of World War II. Over its 92-year history, 79 nations have battled it out for the top prize. Of these, 13 countries have made it to the finals, with eight being crowned champions. Only European and South American teams have ever reached the finals.

When Zinedine Zidane, the then French captain, headbutted Italy's Marco Materazzi during the 2006 World Cup final, the clash quickly became one of the most infamous incidents in football history. What was not clear was what sparked the Frenchman's ire – Zidane said his mother had been insulted, a charge that Materazzi vigorously denied. The head-butt got Zidane sent off and Italy won the game. However, had there been technology there to identify what was said, the result could have been very different, Helen Bear believes. "If a machine lip-reader was in existence, the other player [could] have got sent off too so it would have been 10 men against each other in a World Cup final," she argues.

When Zinedine Zidane, the then French captain, headbutted Italy's Marco Materazzi during the 2006 World Cup final, the clash quickly became one of the most infamous incidents in football history. What was not clear was what sparked the Frenchman's ire – Zidane said his mother had been insulted, a charge that Materazzi vigorously denied. The head-butt got Zidane sent off and Italy won the game. However, had there been technology there to identify what was said, the result could have been very different, Dr Helen Bear believes. "If a machine lip-reader was in existence, the other player [could] have got sent off too so it would have been 10 men against each other in a World Cup final," she argues.