> ## 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.

# v1.3.20

> Enterprise v1.3.20 changelog - 2026-04-23

<Update label="Bifrost Enterprise" description="v1.3.20">
  ## Changelog

  This release adds a dedicated streaming client that eliminates premature SSE termination on long-running responses, pprof profiling support, and a cluster broadcast improvement. It also fixes a concurrent map panic in the plugin pipeline, cluster message invalidation, and an adaptive UI crash.

  ## ✨ Features

  * **Dedicated Streaming Client** - Each provider now uses a separate HTTP client for streaming requests with read-timeout cleared, eliminating premature SSE/EventStream termination on long-running responses; per-chunk idle detection is enforced via `NewIdleTimeoutReader`
  * **Routing Rules Auto-resolve Model** - Provider-only fallbacks now automatically inherit the incoming model, removing the need to repeat model names in fallback routing config
  * **pprof Support** - Added pprof profiling endpoint for production diagnostics and performance troubleshooting
  * **Cluster broadcastWithoutAck** - New cluster broadcast mode for fire-and-forget messaging, now used for load balancer metrics to reduce unnecessary overhead

  ## 🐞 Fixed

  * **Anthropic Empty Thinking Blocks** - Strip `thinking`-typed content blocks with empty `"thinking"` fields before sending to Anthropic, preventing HTTP 400 errors from Claude Code requests
  * **Plugin Timer Concurrent Map Panic** - Added `streamingMu sync.Mutex` to `PluginPipeline` to guard `postHookTimings` across concurrent goroutines during streaming; also fixed a double-pool-release race on streaming errors
  * **Stream Cancellation Safety** - Guarded channel sends and finalizer protection prevent goroutine leaks when clients disconnect mid-stream
  * **Cluster Message Invalidation** - Fixed cluster message invalidation to use EntityType and entity ID instead of message ID, correcting stale-entry eviction under concurrent load
  * **Cluster Permission** - Fixed a cluster permission issue introduced with broadcastWithoutAck
  * **Logs UI** - Switched from WebSocket push to polling for log updates; fixed polling mechanism and defaults the time range to the last hour in logs and dashboard
  * **Adaptive UI Crash** - Fixed page crash caused by empty string passed to Radix Select in the adaptive UI

  ## 🛠️ Build

  * **Go 1.26.2** - Build toolchain upgraded from Go 1.26.1 to Go 1.26.2

  ## 📀 Base OSS version

  `transports/v1.4.24`

  ## 🔌 If you are compiling plugin against this release - use following deps

  ```
  module github.com/maximhq/bifrost-enterprise

  go 1.26.2

  require (
  	cloud.google.com/go/bigquery v1.74.0
  	github.com/DataDog/datadog-go/v5 v5.6.0
  	github.com/DataDog/dd-trace-go/v2 v2.4.0
  	github.com/aws/aws-sdk-go-v2/config v1.32.11
  	github.com/aws/aws-sdk-go-v2/credentials v1.19.14
  	github.com/aws/aws-sdk-go-v2/service/bedrockruntime v1.50.4
  	github.com/bytedance/sonic v1.15.0
  	github.com/coreos/go-oidc/v3 v3.12.0
  	github.com/fasthttp/router v1.5.4
  	github.com/golang-jwt/jwt/v5 v5.3.0
  	github.com/google/cel-go v0.26.1
  	github.com/google/uuid v1.6.0
  	github.com/gorilla/websocket v1.5.4-0.20250319132907-e064f32e3674
  	github.com/grandcat/zeroconf v1.0.0
  	github.com/hashicorp/consul/api v1.22.0
  	github.com/hashicorp/memberlist v0.5.4
  	github.com/maximhq/bifrost/core v1.4.23
  	github.com/maximhq/bifrost/framework v1.2.40
  	github.com/maximhq/bifrost/plugins/governance v1.4.40
  	github.com/maximhq/bifrost/plugins/logging v1.4.40
  	github.com/maximhq/bifrost/transports v1.4.24
  	github.com/nakabonne/tstorage v0.3.6
  	github.com/stretchr/testify v1.11.1
  	github.com/testcontainers/testcontainers-go v0.40.0
  	github.com/tetratelabs/wazero v1.11.0
  	github.com/valyala/fasthttp v1.68.0
  	go.etcd.io/etcd/client/v3 v3.6.6
  	golang.org/x/crypto v0.49.0
  	golang.org/x/oauth2 v0.36.0
  	google.golang.org/api v0.274.0
  	google.golang.org/protobuf v1.36.11
  	gorm.io/driver/sqlite v1.6.0
  	gorm.io/gorm v1.31.1
  	k8s.io/api v0.34.1
  	k8s.io/apimachinery v0.34.1
  	k8s.io/client-go v0.34.1
  )
  ```
</Update>