Hello! I'm Kaz (@seratch), and I recently joined the Developer Experience team at OpenAI. Previously at Slack, I worked on official SDKs and Developer Relations. At OpenAI, I'll continue to support developers in various ways—looking forward to collaborating with you!

OpenAI announced a new set of APIs and the Agents SDK designed for building agentic applications this week:

I wanted to share a collection of useful links to know more about the new tools.

Responses API

• Combines the simplicity of Chat Completions with the tool support of Assistants (beta)
• Manages conversation state for you
• Supports referencing PDFs, in addition to image files
• Works with all currently available and upcoming built-in tools
• Includes access to the request log dashboard by default
• A full superset of Chat Completions—use Responses for new projects
  • Chat Completions will remain supported, including with compatible models
  • Assistants (beta) is scheduled to sunset in mid-2026 (migration guides to come)
• Try it in the Playground or with the Next.js sample app

Built-in Tools

• Web search
  • Available as a tool in Responses (gpt-4o / gpt-4o-mini only)
  • Available as a model only in Chat Completions
  • Pricing here
• File search (Vector Store)
  • Graduated from Assistants (beta) with new features like metadata filtering
  • Upload via Files API and add to a Vector Store
  • Pricing here
• Computer use
  • Powered by the Computer-Using Agent (CUA) model (used in Operator)
  • Initially available to developers in Tiers 3–5
  • Sample apps using Playwright, Docker, Browserbase, and Scrapybara
  • For non-browser use cases, human oversight is recommended
  • Pricing here
• Planned: Code Interpreter
• You can also use Function Calling alongside built-in tools

Agents SDK

• Built from lessons learned with the experimental Swarm SDK
• Orchestrate everything from simple agents to multi-agent systems
• Supports handoffs, guardrails, and tool execution
• Includes a new tracing UI
• Internally uses Responses API, but you can also integrate external Chat Completions-compatible services
• Available in Python now; Node.js support is planned

Observability Tools

• Track and visualize agent workflows
• Tracing UI available by default when using the Agents SDK
• Request log dashboard available for direct API usage
• Add custom spans in code with tracing APIs
• Supports integration with external tools

As a reminder, the official blog post is a comprehensive reference, so definitely check that out too.

Enjoy trying the latest tools and looking forward to seeing what you build!