GPT-5.5 LLM Model Support
Tech · Releases · Wed, April 29, 2026
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OpenAI's GPT-5.5 model is now available as a managed LLM in the Voice Agent API. GPT-5.5 is an Advanced tier model. Set the model in your agent configuration: { "agent": { "think": { "provider": { "type": "open_ai", "model": "gpt-5.5", "tem
Every year
Also on Apr 29, 2026
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- 2026-09-25: added to 2026-04-29