GPT-Live Upgrades Base Model, Delegates Complex Tasks to GPT-5.5
Decision Brief
What changedOpenAI launches GPT-Live for ChatGPT voice mode, enabling background delegation to GPT-5.5.
Why it mattersUpgrading from GPT-4o to GPT-5.5 with background delegation enhances voice interaction fluency and reasoning.
Who should careTeams building on model APIs
Affected stackOpenAI
Builder actionWorth evaluating: can OpenAI replace or complement your current model
Source confidenceMedium · Reliable media or first-hand reporting
OpenAI has released GPT-Live, an update to the model powering ChatGPT's voice mode. Testers report excellent performance on iPhone, allowing delegation of web searches, deep reasoning, or complex tasks to the latest frontier model GPT-5.5. Results are seamlessly returned to the conversation without interruption. GPT-Live initially runs on GPT-5.5 and will be updated with future model releases.
Summary basis: official / RSS sourceCompiled from the source scope noted above; the original remains authoritative.
Sources
- Simon Willison：Blog
Hands-on notes on LLM tools, local models, and practical AI engineering.
- Simon Willison：Blog
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