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PyPI · #4785 most downloaded on PyPI
AI Observability and Evaluation
Last release 4 days ago
01 Oct 2026
Ships on a steady schedule
a new release about every 8 days
Nearly every release is documented
notes for 60 of the last 60 stable releases
19 versions withdrawn
withdrawn after publishing
4 years old
700 releases · first in 2023
One column per quarter.
make render only contain pure functions
## 12.12.0 (2025-11-07) ### Features * page titles derived from navw
timezone selector on safari and firefox
user display timezone preference
add valueFrom option to auth.secret
display metadata for experiment run annotations
Add split edit menu to single example
Ensure latest user api keys are fetched on profile page
datasets: Remove splits feature flag, simplify menu selection
Ensure correct id is used when clicking sessions table row
Add filtering to examples table and split management filter menu
allow new project for v1/spans ingestion
dataset label tab in setting page
Add Menu component from react-aria
add annotation columns to sessions table
This PR was generated with Release Please. See documentation.
<!-- CURSOR_SUMMARY -->
playground: add repetitions to playground
experiments: break out repetitions in experiments compare slideover
helm: allow image registry configuration
experiments: add experiment compare details slideover to list view
experiments: annotation popover on details view
## 11.32.1 (2025-09-04) ### Bug Fixes * support pydantic<2.6
add methods to log document annotations
api: span document annotations API
experiments: experiment list page frontend
## 11.26.0 (2025-08-22) ### Features * tracing: timeline view
get_spans_dataframe sorts by newst/oldest spans
get_spans_dataframe sorts by newst/oldest spans (#9173) (2bf5819)phoenix.trace.openai comment (#9167) (b499243)experiments: result should be nullable when there's error in experiment run evaluation
experiments: enhance experiment compare page
unrecognized provider string should not crash graphql for generative models page
cost: update built-in model token prices
ui: playground error message lists valid options
https://github.com/user-attachments/assets/af17cf83-71fd-4ff4-9fd0-b45b244336e5
https://github.com/user-attachments/assets/af17cf83-71fd-4ff4-9fd0-b45b244336e5
add exporter url to typescript guide
Add environment variable setting for default retention policy
use experiment project name for playground run on datasets
case insensitive substring search for sessions
allow external resource environment variable
Add error boundaries to project metrics
### Bug Fixes * tab order for projects
backend add exp filter on name&description
banner alert for insufficient storage
Add search bar functionality to prompts page
duplicate OpenAIReasoningStreamingClient for AzureOpenAIReasoningStreamingClient
design: add icon button figma link
add trace errors chart + generic bar chart component
add environment variable for support email to be included in error messages
Add experiments module to phoenix-client
don't show negative remaining bytes for db storage chart
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