BuildConfiguration

General Configuration

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General settings

The General section of the agent editor contains the foundational settings that apply to every conversation your agent handles. This is where you choose the language your agent speaks, the AI model powering its responses, and the timezone it uses for date and time references.

Language

The Language dropdown determines which language your agent uses for both speech recognition and voice synthesis. Changing the language automatically adjusts the underlying transcription engine and voice options to match.

AI Model

The AI Model selector controls which large language model powers your agent’s responses. Available options include:

  • GPT-4o — fast, versatile model balancing quality and speed.
  • GPT-4.1 — well-suited for complex tasks where latency is less critical.
  • GPT-4.1 Nano — lightweight variant of GPT-4.1 optimized for speed and cost.
  • GPT-4.1 Mini — similar reasoning power with lower cost.
  • GPT-5 Chat — advanced model for cutting-edge conversational quality.
  • GPT-5 Mini — compact GPT-5 variant balancing performance and cost.
  • GPT-5 Nano — lightweight GPT-5 variant optimized for speed and cost.
  • GPT-5.1 — advanced model with low latency. Pair it with the GPT-5.1 Prompting Guide for best results.
  • GPT-5.2 — OpenAI’s most advanced model. Pair it with the GPT-5.2 Prompting Guide for best results.
  • GPT-5.4 — OpenAI’s latest flagship model. Pair it with the GPT-5.4 Prompting Guide for best results.
  • GPT-5.4 Mini — compact variant balancing performance and cost.
  • GPT-5.4 Nano — lightweight variant optimized for speed and cost.
  • Synthflow — optimized for real-time, natural phone conversations.

Pick the model that matches your latency, cost, and quality requirements.

Timezone

The Timezone dropdown sets the local time context your agent operates in. New agents inherit the default from Settings > Preferences, but you can override it here. Keeping this accurate is critical for call openings, follow-up promises, and calendar booking contexts. The full list of supported values is available on the Timezones reference page.

For lower-level controls over transcription, latency, interruptions, and vocabulary, see Additional settings.