Build more knowledgeable AI applications with new LLMs and greater control in Pinecone Assistant

What this post added

This post introduces support for new LLMs (OpenAI `gpt-4.1`, `o4-mini`, Anthropic `claude-3-7-sonnet`, Gemini `gemini-2.5-pro`) within Pinecone Assistant and exposes the `temperature` parameter for fine-grained control over LLM output. It also mentions infrastructure updates to facilitate faster model integration.