Microsoft Foundry adds Grok 4.3 with 200k context, Fireworks AI inference, and GA Rust SDK

Microsoft Foundry added xAI's Grok 4.3 with a 200k token context window for agentic workflows, integrated Fireworks AI for open-model inference at scale, GA'd the Azure SDK for Rust, and shipped an AI-powered Contract Price Adjustment Agent built on Docusign MCP.