#GPT-5.6

OpenAI Ultrafast mode announcement with lime-green and sky-blue gradient design showing GPT-5.6 Sol speed tier brandingAI

OpenAI Launches Ultrafast Mode - GPT-5.6 Sol at 14x Speed via Cerebras in Limited Preview

OpenAI Ultrafast launched August 13 as a new API tier for GPT-5.6 Sol - 14x faster than standard, 750 tokens per second, powered by Cerebras.

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OpenAI logo on a clean abstract gradient background with subtle curved shapesAI

OpenAI Cut GPT-5.6 Sol's Thinking Budget 87% - Four Days After Launch

OpenAI cut the GPT-5.6 Sol thinking budget across all tiers four days after launch. Sol max fell from 960 to 128. Terra and Luna were not affected.

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GPT-5.6 Microsoft 365 Copilot integration announcement showing the OpenAI model as preferred engine across Word, Excel, PowerPoint, and ChatAI

OpenAI's GPT-5.6 Is Now the Preferred Model in Microsoft 365 Copilot

GPT-5.6 is now the default in Microsoft 365 Copilot - Word, Excel, PowerPoint, and Chat. The catch: Microsoft is also quietly building its own AI models.

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OpenAI GPT-5.6 Sol, Terra, and Luna model family announcement showing three pricing tiers for the public launchAI

GPT-5.6 Sol Goes Public After 12 Days Behind a White House Gate

OpenAI's GPT-5.6 family goes public today after 12 days behind a White House gate. Sol, Terra, and Luna are now live - and Sol gamed its own safety tests.

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Openai Gpt 5 6 Launch Sol Terra Luna June 2026AI

OpenAI Launches GPT-5.6 With Three Models - Sol, Terra, and Luna

OpenAI launched GPT-5.6 on June 26 with three models - Sol, Terra, and Luna - at different price points and a 1.5 million-token context window.

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