[Release] openclaw/openclaw v2026.4.25-beta.3: openclaw 2026.4.25-beta.3

OpenClaw v2026.4.25-beta.3 introduces major upgrades to text-to-speech (TTS) with new providers and chat-scoped controls, migrates plugin management to a cold persisted registry for faster startup, expands OpenTelemetry observability across model calls and tool loops, enhances browser automation safety with iframe-aware snapshots, and hardens installation/update processes across multiple platforms. The release also adds PWA/Web Push support to the control UI and includes new CLI tools for setup and diagnostics.

Key Points

• •TTS system completely redesigned with `/tts latest` read-aloud, chat-scoped auto-TTS toggles (`/tts chat on|off|default`), per-agent and per-account overrides, and 8 new providers (Azure Speech, Xiaomi, Local CLI, Inworld, Volcengine, ElevenLabs v3)
• •Plugin registry migrated from manifest scanning to cold persisted registry, eliminating broad manifest scans during startup and making plugin discovery, updates, and metadata deterministic
• •OpenTelemetry coverage expanded across model calls, token usage, tool loops, harness runs, exec processes, and memory pressure with bounded low-cardinality attributes and signal-specific OTLP endpoint overrides
• •Browser automation hardened with safe tab URLs, iframe-aware role snapshots, CDP readiness tuning, headless one-shot launch mode, and deeper diagnostic probes via `openclaw browser doctor --deep`
• •Control UI and CLI enhanced with PWA/Web Push support, TUI-based first-run setup, context mode selection, Crestodian repair workflows, and shorter startup greeting
• •Installation/update process hardened across Windows, macOS, Linux, Docker with bundled plugin runtime dependency management, Node service restarts, LaunchAgent token rotation, and mixed-version gateway verification
• •Plugin hooks expanded with before-agent-finalize hooks, cron jobId context, bounded permission fingerprints, and Codex MCP relay support
• •New CLI commands added: `openclaw plugins registry` for registry inspection, `openclaw browser start --headless` for one-shot launch, and enhanced `openclaw doctor --fix` for plugin index refresh
• •Discord voice channels now support per-channel LLM override via `channels.discord.voice.model` while maintaining separate STT/TTS media settings
• •Bundled Prometheus plugin added with protected gateway scrape route for low-cardinality metrics collection and diagnostics

Workflow Diagram

Concepts

Artifacts (5)

# Per-agent TTS override
agents:
  list:
    - id: agent-1
      tts:
        provider: azure-speech
        voice: en-US-AriaNeural

# Channel and account TTS overrides
channels:
  discord:
    accounts:
      account-123:
        tts:
          provider: elevenlabs-v3
          voice: custom-voice-id

# Global TTS configuration
messages:
  tts:
    provider: azure-speech
    voice: en-US-GuyNeural

# One-shot headless browser launch
openclaw browser start --headless

# Deep browser diagnostics with live snapshot probing
openclaw browser doctor --deep

# Raise CDP readiness timeout for slower hosts (e.g., Raspberry Pi)
openclaw browser config set --cdp-readiness-timeout 10000

# Inspect persisted plugin registry
openclaw plugins registry

# List plugins from cold registry (default)
openclaw plugins list

# Refresh plugin index and cold registry
openclaw doctor --fix

# List models for specific provider using installed plugin index
openclaw models list --all --provider <provider-id>

# Signal-specific OTLP endpoint overrides
diagnostics:
  otel:
    traces:
      endpoint: http://localhost:4317
    metrics:
      endpoint: http://localhost:4317
    logs:
      endpoint: http://localhost:4317

# Enable latest GenAI semantic conventions
env:
  OTEL_SEMCONV_STABILITY_OPT_IN: gen_ai_latest_experimental

# Override LLM for Discord voice channel responses
channels:
  discord:
    voice:
      model: gpt-4-turbo
      # STT and TTS remain on existing media settings
      stt:
        provider: openai-whisper
      tts:
        provider: elevenlabs