June 17, 2025:
OpenAI Deprecates GPT-4.5 API, Developers Express Discontent - OpenAI announced that it will deprecate the GPT-4.5 Preview model from the API on July 14, 2025, but it will remain available to individual ChatGPT users. This decision has caused confusion and disappointment among developers who relied on its capabilities for their workflows. OpenAI had communicated the phase-out plan in April, describing the model as an experimental step.
Developers now need to transition to GPT-4.1 or other models. Speculation suggests that high compute costs and strategic shifts may have influenced this decision.