OpenAI 'Spud' rumor
A report says a model codenamed “Spud”, described as GPT-5.5, finished pretraining on March 24 and could ship by the end of April. Coverage suggests the timing might affect API pricing and developer workflows, but the information is unconfirmed and should be treated as a leak rather than an official release. (abhs.in)
A report published April 11 says OpenAI has an internal model codenamed “Spud” and that pretraining ended on March 24, but OpenAI has not announced any such release. (abhs.in) The report describes Spud as “GPT-5.5” and says a launch could come before April 30, 2026. It cites unnamed internal signals and points to a Polymarket contract pricing high odds on an April release. (abhs.in) Pretraining is the first large-scale phase of model building, when a system learns patterns from vast text, image, and code datasets before later tuning and safety work. OpenAI said when it introduced GPT-4.5 on February 27, 2025, that scaling both pretraining and post-training produced a stronger chat model. (openai.com) OpenAI’s current public lineup already moved on from GPT-4-class branding. The company introduced GPT-5.4 on March 5, 2026, and its API pricing page now lists GPT-5.4, GPT-5.4 mini, and GPT-5.4 nano as flagship options. (openai.com, openai.com) That leaves the rumor in an odd spot: it points to a “5.5” model after OpenAI publicly shipped “5.4.” OpenAI’s newsroom and help pages, both current as of April 12, do not mention any product named Spud or GPT-5.5. (openai.com, help.openai.com) For developers, the practical question is not the codename but whether a new model would change cost, speed, or migration plans. OpenAI’s live pricing page shows GPT-5.4 at $2.50 per 1 million input tokens and $15.00 per 1 million output tokens, with lower-priced mini and nano versions already in market. (openai.com) OpenAI has changed model availability before. Its February 13, 2026 retirement notice said GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini would be removed from ChatGPT, while API access would remain unchanged at that time. (openai.com) The same pattern makes rumor-reading tricky: ChatGPT rollouts, partner access, and application programming interface releases do not always happen on one date. OpenAI’s own GPT-4.1 launch post from April 14, 2025 said availability could start in the API first, not everywhere at once. (openai.com) So, as of Sunday, April 12, 2026, the only confirmed facts are that a third-party site published the Spud claim and that OpenAI has not publicly corroborated it. Until OpenAI posts a product note, developers are trading on a leak, not a release. (abhs.in, openai.com)
