AI agent startup Temporal has successfully raised $300 million in a Series D funding round, bringing its valuation to $5 billion. The funding was led by Andreessen Horowitz (a16z), with additional investments from Lightspeed Venture Partners, Sapphire Ventures, and Sequoia Capital. Temporal aims to use the funds to enhance its platform, focusing on improving the reliability of AI agents in complex, long-running processes. The company counts major firms like OpenAI, Snap, Netflix, and JPMorgan Chase among its users.