What is the character limit for Generative AI engines?

Current character limit is as follows.

• GPT-5.6 Luna: 150,000 ch

• GPT-5.6 Terra: 100,000 ch

• Yaraku Engine 5: 100,000 ch

• Claude Sonnet 4.5: 70,000 ch 

• Gemini 3.0 Flash: 50,000 ch

*Character limit is based on source character count.