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PyPI · #3041 most downloaded on PyPI
Comet tool for logging and evaluating LLM traces
Last release 2 days ago
02 Oct 2026
Ships on a steady schedule
a new release about every 8 days
Some releases are documented
notes for 24 of the last 60 stable releases
Nothing withdrawn
no release was ever pulled
2 years old
629 releases · first in 2024
One column per month.
The structure of dataset items has changed to include new dynamic fields. Dataset items logged before version 1.0.3 will still show but would not be s
The structure of dataset items has changed to include new dynamic fields. Dataset items logged before version 1.0.3 will still show but would not be searchable. If you would like to migrate previous dataset items to the new format, please see the instructions below: dataset item migration for more information*.
Updated datasets to support more flexible data schema - This change affects how dataset items are structured and may require updates to existing datas
context field is now optional in the Hallucination metric - This may affect existing evaluation configurationsChanged dataset item insertion behavior - Duplicate items are now silently ignored instead of being ingested, which may affect data collection workflo
Updated OpenAI integration to track structured output calls using beta.chat.completions.parse - This may affect existing OpenAI integration code. See
beta.chat.completions.parse - This may affect existing OpenAI integration code. See OpenAI Integration Documentation for details.update_current_span and update_current_trace that did not support updating the output field - This may affect existing trace update code. See Tracing Documentation for details.Nothing published for this version
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