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Tibor Blaho

@btibor91.blaho.me

What happened at OpenAI and Anthropic this past week (Week 17, 2026) OpenAI released GPT-5.5 and GPT-5.5 Pro with expanded Codex capabilities, launched ChatGPT Images 2.0 with thinking mode, rolled out workspace agents in research preview

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OpenAI is working on a new model selector experiment that you might have noticed during the ChatGPT Images 2.0 livestream Moved directly to prompt composer (again), including submenu for thinking effort, and a keyboard shortcut to toggle between Instant & Thinking model (Ctrl + M / ^M)

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OpenAI and Anthropic news roundup (Week 18, 2026) OpenAI open-sourced Symphony spec for Codex orchestration, published "Our principles" post, announced amended Microsoft partnership, achieved FedRAMP Moderate authorization, posted commitment to community safety

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The week in OpenAI and Anthropic news (Week 19, 2026) OpenAI rolled out GPT-5.5 Instant as the new ChatGPT default model with memory sources and ChatGPT for Excel and Google Sheets globally

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