Skip to content

Fix missing token usage from some external model endpoints #199

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Open
wants to merge 1 commit into
base: main
Choose a base branch
from
Open

Fix missing token usage from some external model endpoints #199

Changes from all commits
Commits
Show all changes
1 commit
Select commit
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
12 changes: 12 additions & 0 deletions integrations/langchain/src/databricks_langchain/chat_models.py
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -688,6 +688,18 @@ def _stream(
logprobs=generation_info.get("logprobs"),
)
yield generation_chunk
elif chunk.usage and stream_usage:
# Some models send a final chunk that does not have
# a delta or choices, but does have usage info
if not usage_chunk_emitted:
input_tokens = getattr(chunk.usage, "prompt_tokens", None)
output_tokens = getattr(chunk.usage, "completion_tokens", None)
if input_tokens is not None and output_tokens is not None:
final_usage = {
"input_tokens": input_tokens,
"output_tokens": output_tokens,
"total_tokens": input_tokens + output_tokens,
}

# Emit special usage chunk at end of stream
if stream_usage and final_usage and not usage_chunk_emitted:
Expand Down