> ## 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.

# v1.6.2

> v1.6.2 changelog - 2026-07-01

<Tabs>
  <Tab title="NPX">
    ```bash theme={null}
    npx -y @maximhq/bifrost --transport-version v1.6.2
    ```
  </Tab>

  <Tab title="Docker">
    ```bash theme={null}
    docker pull maximhq/bifrost:v1.6.2
    docker run -p 8080:8080 maximhq/bifrost:v1.6.2
    ```
  </Tab>
</Tabs>

<Update label="Bifrost(HTTP)" description="1.6.2">
  ## ✨ Features

  * **Claude Sonnet 5 Support** - Added compatibility for the Claude Sonnet 5 model family in the Anthropic provider: adaptive-only thinking and sampling-parameter gating, the effort parameter, adaptive thinking, computer-use and text-editor tool generations, dynamic web search filtering, and default max output tokens.

  ## 🐞 Fixed

  * **Bedrock Error Type Extraction** - Fixed error type extraction for Bedrock provider responses.
  * **Gemini/Imagen Aspect Ratio** - Added first-class `aspect_ratio` support for Gemini and Imagen image generation and edit requests; an explicit aspect ratio now takes precedence over any size-derived value and is backfilled into generation responses and stream events.
  * **Plan Cache Migration** - Fixed a regression where the config-hash recompute migration failed on upgrade from a pre-1.6 schema, causing `undefined column` errors on PostgreSQL and SQLite.
  * **Custom Provider Key Form (Bedrock)** - Fixed the custom provider API key form for Bedrock.

  ## 🐙 Closed GitHub Issues

  * [#4797](https://github.com/maximhq/bifrost/issues/4797) — \[Bug]: configstore migration order — refresh\_config\_hash\_after\_mcp\_external\_server\_url\_removal (#139) selects dump\_errors\_in\_console\_logs before add\_dump\_errors\_in\_console\_logs\_column (#160) adds it
</Update>

<Update label="Core" description="1.6.2">
  * feat: added Claude Sonnet 5 compatibility (adaptive-only thinking, effort parameter, adaptive thinking, computer-use and text-editor tool generations, dynamic web search filtering, and default max output tokens)
  * fix: fixed Bedrock error type extraction (#4808)
  * fix: fixed Gemini/Imagen aspect ratio handling in image generation and edit requests (#4798)
</Update>

<Update label="Framework" description="1.4.2">
  * fix: fixed plan cache issue with config-hash recompute migration on upgrade from pre-1.6 schemas (#4819)
  * fix: backfilled aspect\_ratio into streaming image generation responses (#4798)
</Update>

<Update label="compat" description="0.1.24">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>

<Update label="governance" description="1.6.2">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>

<Update label="jsonparser" description="1.5.25">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>

<Update label="logging" description="1.5.25">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>

<Update label="maxim" description="1.6.25">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>

<Update label="mocker" description="1.5.25">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>

<Update label="modelcatalogresolver" description="1.0.6">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>

<Update label="otel" description="1.3.2">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>

<Update label="prompts" description="1.0.25">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>

<Update label="semanticcache" description="1.5.25">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>

<Update label="telemetry" description="1.5.25">
  * chore: upgraded core to v1.6.2 and framework to v1.4.2
</Update>