Hi!

GPT-4 seems not to be the best choice when it comes to coding any longer. I'm developing code with Claude-3 Sonnet (free version), and it's really great. I need to itereate less often compared to GPT-4. It has 200.000 tokens context length and at least the biggest model (Claude-3 Opus) is told to have almost perfect recall capabilities. I found a way to access Claude-3 Opus from a restricted country: https://poe.com/
You can even build your custom GPTs there. I wonder, how you fed ChatGPT the knowledge about Zorro. Did you preprocess the manual, aka summarize it?

More info about Claude-3: https://www.anthropic.com/news/claude-3-family