[ad_1] <br><img src="https://fortune.com/img-assets/wp-content/uploads/2025/01/GettyImages-2194585161-e1737659831255.jpg?w=2048" /><br>DeepSeek’s R1 model has rattled the industry and slashed Nvidia's stock. But for OpenAI, Anthropic and Meta, there is an ironic twist. <a href="https://fortune.com/2025/01/27/deepseek-just-flipped-the-ai-script-in-favor-of-open-source-and-the-irony-for-openai-and-anthropic-is-brutal/">Read More</a> <br><a href="https://fortune.com/2025/01/27/deepseek-just-flipped-the-ai-script-in-favor-of-open-source-and-the-irony-for-openai-and-anthropic-is-brutal/">Read More </a>
