Cursor

2026•Cursor

SDK Bridge v1.0.27

The Cursor SDK Bridge is an open-source protocol and local server that enables developers to drive Cursor agents from any programming language. By providing a stable sdk.v1 protobuf contract, it allows languages like Rust, Go, and Java to interact with Cursor's agent runtime without requiring direct dependency on the official TypeScript or Python SDKs.

Stable sdk.v1 protobuf contract for language-agnostic agent control

Local server architecture that embeds the official Cursor TypeScript SDK

Full support for agent lifecycle management, including creation, resumption, and streaming runs

PricingFree and Open-Source

Version1.0.27

2026•Cursor

Composer 2.5 v2.5

Paid

AI Coding

LLM

Composer 2.5 is Cursor's latest AI coding model — a substantial improvement over Composer 2 in intelligence and behavior. It excels at long-horizon agentic tasks, follows complex instructions more reliably, and introduces targeted RL with textual feedback and 25x more synthetic training tasks.

Targeted RL with textual feedback — localized training signal at specific trajectory points so the model learns which exact decision helped or hurt, not just the final reward

25x more synthetic tasks than Composer 2 — including feature deletion, byte code reverse engineering, and complex multi-file refactors for continual intelligence scaling

Sharded Muon optimizer with dual mesh HSDP — asynchronous distributed orthogonalization enabling 0.2s optimizer steps on the 1T parameter model

Version2.5

RegionGlobal

2026•Cursor

Composer 2 v2

Paid

AI Agents

Agentic AI

Composer 2 is Cursor's latest AI coding model, offering significant improvements in coding intelligence and efficiency. It delivers enhanced performance across various benchmarks, including Terminal-Bench 2.0 and SWE-bench Multilingual.

Frontier-level coding intelligence

Improved performance on Terminal-Bench 2.0 and SWE-bench Multilingual

Supports long-horizon coding tasks through reinforcement learning

Version2

RegionUnited States

2026•Cursor

Cursor 3 (Project Glass) v3.0

Open Source

Coding

AI Agents

Cursor 3, codenamed Project Glass, is the definitive agent-first IDE update that shifts from passive autocomplete to Autonomous Agents capable of spinning up multi-step tasks across your entire repository.

Autonomous agents for multi-step repository-wide tasks

Agent-first IDE architecture replacing passive autocomplete

Deep codebase context awareness across entire projects

Version3.0

RegionUS