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[ARTICLE · art-70446] src=telnyx.com ↗ pub= topic=large-language-models verified=true sentiment=↑ positive

GPT-5.4-mini Now Available for Telnyx Voice AI Assistants

Telnyx has made OpenAI's GPT-5.4-mini available as an LLM model option for its Voice AI Assistants, allowing users to select the compact, high-efficiency model directly in assistant configuration without external API setup for Telnyx-hosted inference.

read1 min views1 publishedJul 23, 2026
GPT-5.4-mini Now Available for Telnyx Voice AI Assistants
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GPT-5.4-mini is now available as an LLM model option for Telnyx Voice AI Assistants. Select OpenAI's compact, high-efficiency model directly in your assistant configuration, with no external API setup required for Telnyx-hosted inference.

For API-based configuration, set the model field on your assistant:

{
  "model": "openai/gpt-5.4-mini"
}

Learn more in the Telnyx AI Assistants docs or the Available Models guide.

source & further reading
telnyx.com — original article NVIDIA Parakeet STT Now Available for Telnyx Voice AI Fish Audio TTS Now Available for Telnyx Voice AI New Telnyx-Managed Insights for Agent Instruction Following and User Satisfaction
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