OpenAI announced plans to phase out GPT-4.5, its largest AI model to date, from its API by July 14. According to reporter Kyle Wiggers from TechCrunch, developers will need to transition to alternative models, with GPT-4.1 being the recommended replacement. An OpenAI spokesperson explained that GPT-4.1 “offers similar or improved performance than GPT-4.5 in key areas at a much lower cost.” The company will continue to prioritize developing future models. GPT-4.5, which was released only in February, will remain available in ChatGPT for paying customers, though only in research preview. The model, codenamed Orion, is notably expensive to operate, costing $75 per million input tokens and $150 per million output tokens, making it one of OpenAI’s most expensive offerings despite falling short on several industry benchmarks.