> ## Documentation Index
> Fetch the complete documentation index at: https://docs.getbifrost.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# v2.1.25

> Helm v2.1.25 changelog - 2026-06-25

<Update label="Bifrost Helm" description="v2.1.25">
  ## Changelog

  * `evaluation_mode` for guardrail rules (`bifrost.guardrails.rules[].evaluation_mode`): `bundled` (default, evaluate all turns together) or `per_turn` (evaluate each turn independently).
  * `group_traces_by_session` for the OTEL and Datadog plugin configs. When `true`, requests sharing the same `x-bf-session-id` header are grouped into a single trace; an inbound W3C `traceparent` always takes priority. Defaults to `false`.
  * `storage.configStore.vaultStore` in `values.yaml` with full commented-out examples for `aws-secrets-manager`, `gcp-secret-manager`, and `hashicorp-vault`. `accessMode: read_and_write` stores plaintext config fields as vault secrets; `read_only` (default) only resolves existing `vault.<path>` references.
  * `dns_names` in cluster discovery config now accepts `env.VAR_NAME` references in addition to literal hostnames, consistent with other secret-bearing fields across the chart.
</Update>