OpenAI said ChatGPT's usage had returned to double-digit growth rates and announced it planned a new model that week, and OpenAI began showing ads to free and Go users in the US with an opt-out that reduced daily message limits.
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Bytedance released Seedance 2.0 to a limited group of users, advancing the capabilities of its AI video-generation system beyond the prior model.
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Researchers in Switzerland and Germany published a new benchmark that showed leading models, including Claude Opus 4.5 with web search enabled, produced incorrect information in nearly one-third of evaluated cases.