OpenAI's updated GPT-5.5 Instant is better at shopping, complex constraints, and understanding user intent — and it's already in the API

OpenAI is moving away from models that require heavy hand-holding and toward systems that can better infer the user’s goal, ...
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Voice agent APIs in 2026, compared: which one actually hears your users?

Compare AssemblyAI, OpenAI, Deepgram and ElevenLabs voice agent APIs on accuracy, pricing, latency, languages and production ...

OpenAI unveils GPT-5.6 Sol, Terra and Luna models — but only accessible to limited preview partners for now, per US Gov

Sol and Terra set new high benchmark scores, while Luna performs near GPT-5.5 levels on several tests despite being ...