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Data Points: GPT-5.4 Pro, Luma Uni-1, Phi-4-reasoning-vision-15B, Yuan 3.0 Ultra, OpenAI hardware chief resignation

The Batch's weekly roundup covers several significant AI developments: OpenAI released GPT-5.4 and GPT-5.4 Pro with computer-use agent capabilities, 1M token context, and strong benchmark gains on GDPval and OSWorld-Verified; Luma AI released Uni-1, a unified autoregressive model for visual understanding and generation; Microsoft released Phi-4-reasoning-vision-15B, an open-weights multimodal model trained on 200B tokens; Yuan Lab AI released Yuan 3.0 Ultra, a 1T-parameter MoE model with SOTA on document retrieval benchmarks. Additionally, OpenAI hardware chief Caitlin Kalinowski resigned over the company's Pentagon deal, citing concerns about surveillance and autonomous weapons governance.