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On October 27, 2026, Cursor released the Agent SDK, which supports defining agents in code: prompts are written in Markdown, and tools are written in TypeScript. The agent can either be deployed on Cursor's hosted infrastructure or run on your own; the SDK has built-in evals for measuring each change and continuously improving the agent. There is currently no information on further developments.
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GPT-6.1 Terra Released; Anthropic Files for IPODevelopments
1 confirmed developments
- Source:Cursor
Reports and discussion timeline
Browse reports and discussion by time. Their evidence levels remain distinct.
Oct 27
Testing Catalog
GPT-6.1 Terra Released; Anthropic Files for IPO
OpenAI released GPT-6.1 Terra, rolling it out to Plus, Pro, Enterprise, and Edu users of ChatGPT Work and Codex, with API pricing 50% lower than GPT-5.6 Terra. Anthropic filed an S-1 for a Nasdaq IPO, disclosing revenue of $16.3 billion for the first half of 2026, with a net loss of $80.7 billion mainly from a $72.4 billion non-cash increase in the value of convertible notes. Google launched the Gemini API CLI, allowing agents such as Claude Code, Codex, and Cursor to call Gemini to process images, video, audio, music, and PDFs.
CursorFirst-partySelected
Cursor Releases Agent SDK, Enabling Code-Defined Agents with Built-in Evals
Cursor has released the Agent SDK, which lets you define agents in code, with prompts written in Markdown and tools written in TypeScript. Agents can be deployed on Cursor's managed infrastructure or run on your own, and built-in evals are used to measure each change and continuously improve the agent.