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What Are Dev Logs? 

Dev Logs are a timestamped sequence of system-level events that occur during the lifecycle of a voice/chat interaction. These logs capture each stage of the agent orchestration, starting from the initial greeting to transcription, LLM processing, voice synthesis, and call disconnection. It’s built for developers and advanced users who want visibility into every stage of the agent’s thinking and speaking process.  

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Where to Find It 

You can access Dev Logs by navigating to:
Conversation Logs → Dev Logs  

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Why Use Dev Logs? 

Dev Logs are essential when: 
  • You want to debug why an agent didn’t respond correctly 
  • You need to analyze latency at each stage (TTS, ASR, LLM) 
  • You’re optimizing call performance 

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Log Source / Module Tags 

Each log line is prefixed by a module to indicate where it originated: 
ModuleDescription
CALLTracks call lifecycle: start, disconnect
ORCHOrchestration logic like greeting fetch, post-call actions, post-call processing
TTSText-to-speech processing, TTFB (time to first byte), latencies, audio durations
ASR / TRANSCRIBESpeech recognition, transcription results, audio duration and latency
LLMLarge Language Model events, streaming, token usage info, language switch detection, error handling if generation fails
KBKnowledge base context retrieval and metrics
BARGEUser interruption (barge-in) detection and handling
ERRORError responses, especially from OpenAI or other APIs
UNKNOWNFallback logs for unexpected events or raw debug info

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Latency Monitoring 

Look out for high latency values in: 
  • ASR Latency 
  • TTS Latency 
  • LLM Generation Time 
High values may indicate network, model, or transcription delays. These are key areas to optimize. 

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End of Conversation Signals 

Look out for: 
  • EOC: End of Conversation 
  • CALL: Disconnecting call: User hang-up or timeout 
  • ORCH: Finalizing total call credits: Post-call processing 

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Debugging Tips 

IssueCheck This Section
Agent responded slowlyTTS / LLM latency
Agent misunderstood userASR final result
Agent gave a wrong or incomplete responseLLM logs
Response wasn’t spokenTTS
Unexpected disconnectCALL logs at the end

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Summary 

The Dev Logs tab is your deep-dive tool for full transparency into: 
  • What your agent said 
  • What the user said 
  • How long each step took 
  • What the model generated and why 
It’s invaluable for debugging, improving accuracy, and ensuring top performance.