ChatGPT-4o (2025-04-25 update)
OpenAI · 2025-04-25
ChatGPT-4o (2025-04-25 update) was a GPT-4o mainline update that OpenAI rolled out in ChatGPT on April 25, 2025 and began rolling back on April 28 after identifying sycophantic behavior. EQBench evaluated it through the mutable chatgpt-4o-latest API alias and preserved the dated source label chatgpt-4o-latest-2025-04-25; OpenAI published no immutable model ID for this update.