DisclaimerUnofficial, and not affiliated with Anthropic. Nearly all of this is read straight out of what ships: npm bundles, captured prompts, published docs. Anthropic's own notes go in verbatim, marked as theirs. The rest is my reading, and every entry carries the strings behind it. If one looks wrong, vote it down and say why.
The maximum image dimension for claude-opus-4-7 has been reduced from 2576×2576 to 2000×2000 pixels, which may reduce token usage for image-heavy conversations.
Evidence
Changed constant (search for maxWidth: 2000, maxHeight: 2000)
Strings lifted out of the shipped bundle, so the claim above can be checked against them.
Related
Other releases about the same thing. Found by shared names or similar wording; neither means one caused the other.