The ratings must have been reached but do not need to have been kept.
2200 FIDE for CM
2200 USCF for NM (USA flagged 14-year-old male player requesting)
2300 FIDE for FM
2400 FIDE plus three IM norms for IM
2500 FIDE plus three GM norms for GM
CM, FM, IM and GM also have direct title options that reduce the rating requirement by 200. The Pan American youth is in Orlando next month and tying for first in U16 would give the FM title (once reaching 2100) and taking the gold in U18 would give the IM title (once reaching 2200) while silver or bronze would give the FM title (once reaching 2100). There are other such tournaments that can be used as well. The past year's massive FIDE lower-level upward rating adjustments make such ratings more plausible to reach.
FIDE? You mean ELO?
ELO is a way of calculating ratings (like Glicko and Glicko-2). FIDE (Federation Internacional de Echess) is the organization that uses its (ELO-based) ratings to determine when to award titles. You can have a high ELO-based rating in any system but only FIDE gives GM/WGM/IM/WIM/FM/WFM/CM/WCM. Various countries can give NM based on their rating systems (ELO or Glicko or something else).
The ratings must have been reached but do not need to have been kept.
2200 FIDE for CM
2200 USCF for NM (USA flagged 14-year-old male player requesting)
2300 FIDE for FM
2400 FIDE plus three IM norms for IM
2500 FIDE plus three GM norms for GM
CM, FM, IM and GM also have direct title options that reduce the rating requirement by 200. The Pan American youth is in Orlando next month and tying for first in U16 would give the FM title (once reaching 2100) and taking the gold in U18 would give the IM title (once reaching 2200) while silver or bronze would give the FM title (once reaching 2100). There are other such tournaments that can be used as well. The past year's massive FIDE lower-level upward rating adjustments make such ratings more plausible to reach.
https://handbook.fide.com/chapter/B01DirectTitles2024
FIDE? You mean ELO?