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PyPI · #3171 most downloaded on PyPI
AI Observability and Evaluation
Last release 3 days ago
18 Sep 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19 versions withdrawn
withdrawn after publishing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
695 releases · first in 2023
One column per quarter.
cost: remove extra join in query for span cost summary
### Features * cost: sort on traces table (#8255) (6cec5d9) * Paginate session details view (#8328) (50b568b) * Redirect from otel ids
cost: add models for gemini 2.5
helm: add support for imagePullSecrets to the helm chart (#8300) (c305e4a), closes #8299
cost: fallback to input/output base rate for unrecognized token types
### Features * bedrock playground client (#7918) (15d7e7a) ### Bug Fixes * restore evaluator traces
read OTEL_EXPORTER_OTLP_ENDPOINT when PHOENIX_COLLECTOR_ENDPOINT is missing
### Documentation * add google adk
Add log_spans to client and REST API
change session filter query to remove the join to project_sessions table
experiments: paginate experiment comparisons table
Prevent extra mutations when editing Span annotations
### Documentation * fix js readme
Composable ModalOverlay component
Add dataset methods to phoenix client
datasets: allow large field sizes for csv dataset upload
helm: update Chart.lock and ensure chart dependencies are installed before packaging
### Bug Fixes * helm: helm cleanup
Add get_spans to phoenix client
get_spans to phoenix client (#7688) (8b48176)### Features * xai to playground
### Features * helm chart release (#7793) (5cd927b) * toolCHoiceSelect
no local storage should skip creating dirs
trace retention max_count deletion query did not properly group by project
typo in deepseek error message for missing api key
predefined query for extracting tool calls
cost: display audio, cache read, and cache write tokens on span token tooltip
Protect against experiment run creation race conditions and conflict errors
update strawberry to fix multipart subscription
increase prompt fetch limit to 200 and update component to be scrollable
eliminate graphql error screen flicker during login redirect due to invalid token
experiments: make experiment columns resizable
graphql query for hourly span count timeseries
dashboards: rudamentary routes for dashboards
### Features * add claude 3.7 (#7539) (db8ceaf) * api: expose experiment routes
ui: agno, mcp, gemini integrations
List, sort, and filter projects in UI
### Bug Fixes * pin strawberry
db table for trace data retention policies
get_span_annotations_dataframe to client (#7366) (94c0c02)None optimization direction (#7258) (5110321)add flag for orphan_span_as_root_span on client for span query
components: video for tutorials
Add "copy name" button to project menu
### Features * environment variables for TLS
Improve browser compatibility for Table sizing features
use float for token count summaries
### Bug Fixes * Allow scroll on settings pages
### Bug Fixes * require starlette>=0.46.0
### Bug Fixes * remove WebSocket dependency
disallow admin user to change their own role
add PHOENIX_ADMIN_SECRET environment variable
Display tool call and tool result Ids in span details
update Gemini models for playground
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