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Anthropic releases Claude 4 Opus with 2M token context window  ·  OpenAI confirms GPT-5 training complete, eval results pending  ·  Google DeepMind achieves 98.7% on MATH benchmark with new reasoning model  ·  EU AI Act enforcement begins — first compliance deadline passed  ·  Meta's LLaMA 4 goes fully open-source under Apache 2.0  ·  xAI's Grok-3 beats GPT-4o on coding benchmarks, Musk claims  · 

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