OpenAI is retiring GPT-4 from ChatGPT on April 30, replacing it with the improved GPT-4o, which enhances writing, coding, and STEM capabilities. Despite GPT-4’s significance, the newer model boasts upgrades in instruction following, problem-solving, and conversational flow, positioning it as the natural successor. While API users can still access GPT-4 post-retirement, OpenAI is gearing up to launch new models like o3, o4-mini, and GPT-4.1, with GPT-4.5 serving as a precursor to GPT-5.
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Quantum Messages Travel 254 km Using Existing Infrastructure For the First Time
Researchers in Germany have achieved a significant milestone in quantum communications by successfully demonstrating coherent quantum communications over 254 km of existing commercial telecom fiber, marking the first real-world deployment of such a system without cryogenic cooling. Utilizing coherence-based twin-field quantum key distribution, this system allows for secure information distribution across long distances and connects three data centers in Frankfurt, Kehl, and Kirchfeld. This advancement indicates that advanced quantum communication protocols can effectively operate over...
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