For the complete documentation index, see llms.txt. Markdown versions of all pages are available by appending .md to any URL (e.g. /max/get-started.md).

Python class

PromptTooLongError

PromptTooLongError

class max.pipelines.context.PromptTooLongError(num_tokens, max_length, *, limit_description='configured maximum context length')

source

Bases: InputError

Raised when a prompt exceeds the model’s maximum input length.

Exposes num_tokens and max_length as attributes so callers can handle the failure programmatically (e.g., truncate and retry) instead of parsing the message.

limit_description describes what is being limited, since the same failure mode means different things in different architectures (an LLM context window vs. a diffusion text encoder’s max sequence length).

Parameters:

• num_tokens (int)
• max_length (int)
• limit_description (str)

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