---
title: "v1.4.21"
description: "v1.4.21 changelog - 2026-04-10"
---
<Tabs>
  <Tab title="NPX">
    ```bash
    npx -y @maximhq/bifrost --transport-version v1.4.21
    ```
  </Tab>
  <Tab title="Docker">
    ```bash
    docker pull maximhq/bifrost:v1.4.21
    docker run -p 8080:8080 maximhq/bifrost:v1.4.21
    ```
  </Tab>
</Tabs>

<Update label="Bifrost(HTTP)" description="1.4.21">
## ✨ Features

- **OCR Endpoint** — Add end-to-end support for /v1/ocr endpoint with Mistral OCR (thanks [@Vaibhav701161](https://github.com/Vaibhav701161)!)
- **Azure Passthrough** — Add Azure passthrough support for native Azure API calls
- **OpenRouter Embeddings** — Add embeddings support for OpenRouter provider (thanks [@dennypradipta](https://github.com/dennypradipta)!)
- **Redis TLS & Cluster** — Add TLS and cluster mode support for Redis connections and fix valkey-search query syntax
- **272k Token Pricing** — Add 272k token tier and priority tier support in pricing
- **OAuth MCP Hints** — Add next-step hints to OAuth MCP client creation response

## 🐞 Fixed

- **Pricing Sync Interval** — Correctly apply pricing_sync_interval and support env variables in pricing_url (thanks [@Vaibhav701161](https://github.com/Vaibhav701161)!)
- **OAuth Transient Failures** — Don't mark OAuth config expired on transient network failures

</Update>
<Update label="Core" description="1.4.18">
- feat: add end-to-end support for /v1/ocr endpoint with Mistral OCR (thanks [@Vaibhav701161](https://github.com/Vaibhav701161)!)
- feat: add Azure passthrough support
- feat: add embeddings support for OpenRouter provider (thanks [@dennypradipta](https://github.com/dennypradipta)!)

</Update>
<Update label="Framework" description="1.2.37">
- feat: add end-to-end support for /v1/ocr endpoint with Mistral OCR (thanks [@Vaibhav701161](https://github.com/Vaibhav701161)!)
- feat: add 272k token tier and priority tier support in pricing
- feat: add TLS and cluster mode support for Redis connections
- fix: correctly apply pricing_sync_interval and support env variables in pricing_url (thanks [@Vaibhav701161](https://github.com/Vaibhav701161)!)
- fix: don't mark OAuth config expired on transient network failures
- fix: valkey-search query syntax handling

</Update>
<Update label="governance" description="1.4.37">
- chore: upgraded core to v1.4.18 and framework to v1.2.37

</Update>
<Update label="jsonparser" description="1.4.36">
- chore: upgraded core to v1.4.18 and framework to v1.2.37

</Update>
<Update label="litellmcompat" description="0.0.26">
- chore: upgraded core to v1.4.18 and framework to v1.2.37

</Update>
<Update label="logging" description="1.4.37">
- feat: add OCR endpoint logging support

</Update>
<Update label="maxim" description="1.5.37">
- chore: upgraded core to v1.4.18 and framework to v1.2.37

</Update>
<Update label="mocker" description="1.4.36">
- chore: upgraded core to v1.4.18 and framework to v1.2.37

</Update>
<Update label="otel" description="1.1.36">
- chore: upgraded core to v1.4.18 and framework to v1.2.37

</Update>
<Update label="semanticcache" description="1.4.35">
- feat: add TLS and cluster mode support for Redis connections
- fix: valkey-search query syntax handling

</Update>
<Update label="telemetry" description="1.4.37">
- chore: upgraded core to v1.4.18 and framework to v1.2.37

</Update>