Entity Extraction with LLMs: Addressing Challenges

also AttributeError: 'Anthropic' object has no attribute 'get_tokenizer'

yes, you can

For long documents you can use gemini

whats the code?

You should check:
https://docs.llamaindex.ai/en/stable/module_guides/models/llms/usage_standalone/

https://docs.llamaindex.ai/en/stable/module_guides/querying/structured_outputs/

https://docs.llamaindex.ai/en/stable/module_guides/querying/structured_outputs/output_parser/

You should tell it to return in a structured format so you can manipulate the entities for your use case later.