The day in AI
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Everything from this day
Launches and products
9 Jul 2025xAIGrok 4 and Grok 4 Heavy Grok 4 pairs native tool use with large-scale RL; Grok 4 Heavy runs parallel agents and is first to claim 50% on Humanity's Last Exam.9 Jul 2025PerplexityComet Perplexity launches Comet, a Chromium-based browser with a sidebar assistant that reads tabs and acts on pages, first for Max subscribers.9 Jul 2025GoogleMedGemma 27B Multimodal and MedSigLIP MedGemma 27B Multimodal adds image and longitudinal health-record understanding to the open MedGemma family; MedSigLIP is a lightweight medical image-text encoder.