You can view the descriptions of each model in the Claude model introduction. It is recommended to use the following models for translation:
claude-3-5-haiku-latest: The input price is $1 per million tokens, and the output price is $5 per million tokens.
claude-3-5-sonnet-latest: The input price is $3 per million tokens, and the output price is $15 per million tokens.
claude-3-opus-20240229: The input price is $15 per million tokens, and the output price is $75 per million tokens.
Claude does not have a free quota.
"Input" refers to the text you send to the model for translation, and "output" refers to the translation result provided by the model. The final cost of a single translation = number of input tokens * input price + number of output tokens * output price.
1 token roughly corresponds to 1 Chinese character or 3 to 4 letters.