Gemini 2.5 Pro vs. Claude 3.7 Sonnet: Coding Comparison

Here is a real coding problem that I might be willing to make a cash-prize contest for. We'd need to nail down some rules. I'd be shocked if any LLM can do this:

https://github.com/solvespace/solvespace/issues/1414

Make a GTK 4 version of Solvespace. We have a single C++ file for each platform - Windows, Mac, and Linux-GTK3. There is also a QT version on an unmerged branch for reference. The GTK3 file is under 2KLOC. You do not need to create a new version, just rewrite the GTK3 Linux version to GTK4. You may either ask it to port what's there or create the new one from scratch.

If you want to do this for free to prove how great the AI is, please document the entire session. Heck make a YouTube video of it. The final test is weather I accept the PR or not - and I WANT this ticket done.

I'm not going to hold my breath.

Convert the GTK 3 and GTK 4 API documentation into a single `.txt` file each.

Upload one of your platform-specific C++ file's source, along with the doc `.txt` into your LLM of choice.

Either ask it for a conversion function-by-function, or separate it some other way logically such that the output doesn't get truncated.

Would be surprised if this didn't work, to be honest.

Do you really need to provide the docs? I would have imagined that those docs are included in their training sets. There is even a guide on how to migrate from GTK3 to GTK4, so this seems to be a low-hanging fruit job for an LLM iff they are okay for coding.