[Release] langchain-ai/langchain langchain-perplexity==1.4.0: langchain-perplexity==1.4.0

langchain-perplexity version 1.4.0 introduces tool binding capabilities and Responses-API tool round-trip functionality, enabling more sophisticated agent interactions. This release builds on version 1.3.2 with enhanced tool integration features. A hotfix for OpenAI's minimum core dependency is also included to ensure compatibility.

Key Points

• •New `bind_tools` feature enables dynamic tool binding for Perplexity models
• •Responses-API tool round-trip support allows seamless tool invocation and response handling
• •Enhanced agent capabilities through improved tool integration patterns
• •OpenAI minimum core dependency hotfix ensures version compatibility
• •Upgrade from langchain-perplexity 1.3.2 to 1.4.0 for latest tool features
• •Tool binding enables more flexible and composable agent workflows

Workflow Diagram

Concepts