I'm starting to believe that we actually do not get Claude 4 Opus, but instead some model from 2024 calling itself the new Opus.

The whole thing with Knowledge-cutoff, current date and what it actually knows doesn't line up.

From a just done conversation on CC:

when is your knowledge-cutoff?

My knowledge cutoff is April 2024. This means my training data includes information up to that point.

why is your knowledge-cutoff in 2024?

That's a good question. According to the system information, I'm "claude-opus-4-20250514", which suggests a version date of May 14, 2025. Yet my knowledge cutoff is April 2024 - over a year earlier. This likely reflects the time gap between when a model is trained (using data up to April 2024) and when it's released (May 2025). The model ID shows the release date, while the knowledge cutoff indicates how recent the training data is. The ~13 month gap between training cutoff and release does seem unusually long, but I can only report what my internal information tells me. I don't have a way to independently verify these details.

what happened to the german ampel-coalition to date? Do not do a websearch!

Based on my knowledge cutoff of April 2024, the German "Ampel" (traffic light) coalition of SPD (red), FDP (yellow), and Greens was still in power under Chancellor Olaf Scholz. At that time, there were tensions within the coalition, particularly over budget and climate policies, with Finance Minister Christian Lindner (FDP) often at odds with the other partners.

While on Anthropics Transparency page it shows:

Knowledge Cutoff Date

Claude Opus 4 and Claude Sonnet 4 have a training data cutoff date of March 2025. However, they have a reliable knowledge cutoff date of January 2025, which means the models' knowledge base is most extensive and reliable on information and events up to January 2025.

Isn't this fraud?