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OpenAI releases GPT-5.4 with 1M-token context window; Google launches Gemini Embedding 2 and upgrades Gemini 3.1 Flash Lite

Model release Provisional 72% confidence first seen

OpenAI released GPT-5.4 Pro featuring a 1M-token context window with improved capabilities, while Google launched Gemini Embedding 2, a multimodal embedding model supporting text, images, video, audio, and documents, and upgraded Gemini 3.1 Flash Lite with faster performance and agent integration tools. These releases represent major updates from both leading AI companies with expanded capabilities and context handling.

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