Anecdotally o4-mini doesn’t perform as well on video understanding tasks in our pipeline, and also in Cursor it seems really not great.
During one session, it read the same file (same lines) several times, ran ‘python -c ‘print(“skip!”)’’ for no reason, and then got into another file reading loop. Then after asking a hypothetical about the potential performance implications of different ffmpeg flags, it claimed that it ran a test and determined conclusively that one particular set was faster, even though it hadn’t even attempted a tool call, let alone have the results from a test that didn’t exist.
During one session, it read the same file (same lines) several times, ran ‘python -c ‘print(“skip!”)’’ for no reason, and then got into another file reading loop. Then after asking a hypothetical about the potential performance implications of different ffmpeg flags, it claimed that it ran a test and determined conclusively that one particular set was faster, even though it hadn’t even attempted a tool call, let alone have the results from a test that didn’t exist.