{"id":13339,"date":"2026-06-03T10:04:25","date_gmt":"2026-06-03T10:04:25","guid":{"rendered":"https:\/\/serisec.com\/index.php\/2026\/06\/03\/openai-upgrades-gpt-55-as-it-plans-to-retire-legacy-chatgpt-models\/"},"modified":"2026-06-03T10:04:25","modified_gmt":"2026-06-03T10:04:25","slug":"openai-upgrades-gpt-55-as-it-plans-to-retire-legacy-chatgpt-models","status":"publish","type":"post","link":"https:\/\/serisec.com\/index.php\/2026\/06\/03\/openai-upgrades-gpt-55-as-it-plans-to-retire-legacy-chatgpt-models\/","title":{"rendered":"OpenAI upgrades GPT-5.5, as it plans to retire legacy ChatGPT models"},"content":{"rendered":"<p>    OpenAI upgrades GPT-5.5, as it plans to retire legacy ChatGPT models<br \/>\n \t<BR><br \/>\n<BR><\/BR><br \/>\n    <!-- no image --><br \/>\n \t<BR><br \/>\n<BR><\/BR><\/p>\n<div>OpenAI says it&#8217;s rolling out a new update that improves the existing GPT-5.5 Instant model, and this move comes ahead of the scheduled retirement of multiple legacy models, including o3. [&#8230;]<\/div>\n<p> \t<BR><br \/>\n <BR><\/BR><br \/>\n    Mayank Parmar<br \/>\n \t<BR><br \/>\n<BR><\/BR><br \/>\n<a href=\"https:\/\/www.bleepingcomputer.com\/news\/artificial-intelligence\/openai-upgrades-gpt-55-as-it-plans-to-retire-legacy-chatgpt-models\/\">Go to bleepingcomputer<\/a><br \/>\n \t<BR><br \/>\n <BR><\/BR><\/p>\n","protected":false},"excerpt":{"rendered":"<p>OpenAI upgrades GPT-5.5, as it plans to retire legacy ChatGPT models OpenAI says it&#8217;s rolling out a new update that improves the existing GPT-5.5 Instant model, and this move comes ahead of the scheduled retirement of multiple legacy models, including o3. [&#8230;] Mayank Parmar Go to bleepingcomputer<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[266,64,279],"tags":[80],"class_list":["post-13339","post","type-post","status-publish","format-standard","hentry","category-artificial-intelligence","category-bleepingcomputer","category-technology","tag-bleepingcomputer"],"_links":{"self":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/13339"}],"collection":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/comments?post=13339"}],"version-history":[{"count":0,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/posts\/13339\/revisions"}],"wp:attachment":[{"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/media?parent=13339"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/categories?post=13339"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/serisec.com\/index.php\/wp-json\/wp\/v2\/tags?post=13339"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}