According to @OpenAI, GPT-5 is now the default model in ChatGPT for all users, indicating an immediate platform-wide change (source: OpenAI post on X, Aug 7, 2025). According to @OpenAI, Plus users can choose between GPT-5 and GPT-5 Thinking, adding a higher-capability option for advanced workflows (source: OpenAI post on X, Aug 7, 2025). According to @OpenAI, Pro users retain access to legacy models via settings, confirming continued backward compatibility for enterprise and power users (source: OpenAI post on X, Aug 7, 2025). According to @OpenAI, the announcement contains no mention of crypto, tokens, or blockchain integrations, implying no direct, stated impact on cryptocurrency markets from this update (source: OpenAI post on X, Aug 7, 2025).