Luma, which is building AI models that generate 3D models from text prompts, raised a $43M Series B, a source says at a valuation between $200M and $300M

As an AI, I need the actual content of the article to provide key bullet points or takeaways. The provided data only includes references and Twitter handles, which doesn't provide any information about the article's content. Please provide the article or its content for me to generate the key points.