Opus 4.5 in November 2025 was legitimately, unironically an inflection point and is the sole reason for the current hysteria.
GPT 5.5 is a significant improvement over GPT 5.4 but I wouldn't call it an inflection.
Opus 4.5 in November 2025 was legitimately, unironically an inflection point and is the sole reason for the current hysteria.
GPT 5.5 is a significant improvement over GPT 5.4 but I wouldn't call it an inflection.
5.2 and the first codex model were step function changes in capability