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PXI in the Terminal

June 26, 2026 Available in @arizeai/phoenix-cli 1.6.0+ (beta). Requires a Phoenix server running arize-phoenix 17.12.0+. PXI now runs as an interactive chat right in your shell. It is the same server-side agent that powers the in-browser experience — the CLI connects to a running Phoenix instance, so model credentials, skills, and permissions stay configured on the server. Because the agent runs on the server, the CLI requires a Phoenix instance on arize-phoenix 17.12.0 or newer. Run it without installing anything: 
npx -y @arizeai/phoenix-cli pxi
Or install the CLI globally and use the pxi command directly: 
npm install -g @arizeai/phoenix-cli
pxi
Point it at your Phoenix instance with environment variables, or pass --endpoint and --api-key flags: 
export PHOENIX_HOST=http://localhost:6006
pxi
  • Pick the model — --provider and --model select the model (defaults to Anthropic claude-opus-4-8); --custom-provider-id targets a custom provider configured under Settings → Models
pxi --endpoint http://localhost:6006 --provider OPENAI --model gpt-5.4
  • Launch preflight — on startup the client checks the server’s model catalog and credentials, surfacing configuration problems as a clean error before the chat opens (skip with --skip-model-preflight)
  • Stay in control — edits are proposed as accept/reject diffs by default; pass --bypass-edits to apply them automatically, or --enable-web-access to let PXI consult the web for grounding
  • Saved profiles — reuse a stored Phoenix CLI connection with --profile <name>
Slash commands are available in @arizeai/phoenix-cli 1.6.1+: type /clear to reset the conversation, /exit to quit, or /help to list available commands. The input prompt syntax-highlights command tokens and shows a live completion list as you type.

PXI Agent

Enable PXI on your deployment and learn what it can do.

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Annotation Summary in Project Settings

June 30, 2026 Available in arize-phoenix 17.14.0+ Project settings now include an annotations summary showing every annotation name applied in the project, grouped by what it is attached to.
  • Counts by name — separate cards for Span Annotations, Trace Annotations, and Session Annotations list each annotation name alongside how many annotations use it
  • Bulk delete by name — remove every annotation of a given name in one action, optionally restricted to a time range; deletion is gated by project permissions

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Copyable Trace ID in Experiment Trace Details

June 25, 2026 Available in arize-phoenix 17.12.0+ The trace details dialog opened from experiment views (compare, list, and table) now shows the trace ID as a badge with a copy-to-clipboard button, so you can grab the ID for debugging without leaving the dialog.