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Harrison/llamacpp #5402

Merged
merged 2 commits into from
May 29, 2023
Merged

Harrison/llamacpp #5402

merged 2 commits into from
May 29, 2023

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hwchase17
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s7726 and others added 2 commits May 29, 2023 06:40
# Adds support for counting tokens using the llama.cpp python interface
rather than the default huggingface transformers library

The current implementation of the `LlamaCpp` LLM defaults to the base
`LLM` for token counting. This results in the need for the huggingface
transformers library to be loaded.

The Llama.cpp python interface provides a method for tokenizing a given
string. This PR overloads the `get_num_tokens` method of the base class
to use that instead.

Using the native tokenizer should yield more accurate token counts
dependent on the loaded model.

For llama.cpp workflows this PR reduces dependencies.

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## Before submitting

Wasn't sure how to setup a test for this without spinning up a
particular model. But I have tested it in a project.

## Who can review?

Community members can review the PR once tests pass. Tag
maintainers/contributors who might be interested:
@hwchase17
@agola11
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@hwchase17 hwchase17 added the lgtm PR looks good. Use to confirm that a PR is ready for merging. label May 29, 2023
@hwchase17 hwchase17 merged commit 3e16468 into master May 29, 2023
@hwchase17 hwchase17 deleted the harrison/llamacpp branch May 29, 2023 13:44
vowelparrot pushed a commit that referenced this pull request May 31, 2023
@danielchalef danielchalef mentioned this pull request Jun 5, 2023
Undertone0809 pushed a commit to Undertone0809/langchain that referenced this pull request Jun 19, 2023
This was referenced Jun 25, 2023
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2 participants