xAI
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Composer 2.5 is now available inside Grok Build. Composer 2.5 is a fast, highly intelligent model that excels on long-running tasks and following complex instructions. https://t.co/x7k4zVuVdW
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View on XxAI Adds Cursor's Composer 2.5 to Grok Build for Long-Running Agentic Tasks
xAI added Cursor's Composer 2.5 to the Grok Build model menu, making a third-party coding model available alongside its native grok-build-0.1 family. Accessible via the
/model command, Composer 2.5 is optimized for speed and sustained instruction-following, maintaining logical coherence across multi-step autonomous engineering tasks that stretch over extended sessions.- Model
- Composer 2.5
- Created by
- Cursor
- Host Environment
- Grok Build CLI
- Access Tier
- SuperGrok and X Premium+
- Primary Capability
- Long-running agentic tasks
Cursor launched Composer 2.5 with a reinforcement learning approach that corrects mid-trajectory errors in tool use and communication, trained on substantially more synthetic tasks than its predecessor. By surfacing the model inside Grok Build, xAI gives developers working in its terminal environment access to a model purpose-built to handle the context drift that often degrades reliability during long agentic loops.
SuperGrok and X Premium+ subscribers can select the model from the /model menu after installing Grok Build via the x.ai CLI install script. It works alongside Grok Build's parallel subagents and Plan Mode, supporting both interactive terminal use and headless execution for CI/CD pipelines.
Still wondering? A few quick answers below.
Composer 2.5 is a coding model created by Cursor, optimized for sustained performance during extended autonomous engineering tasks where standard models often struggle with context retention. xAI has made the model available as an option within the Grok Build terminal interface, accessible to SuperGrok and X Premium+ subscribers via the /model menu.
You need an active SuperGrok or X Premium+ subscription. After installing Grok Build on your local machine, type /model in the terminal to open the model picker, then select Composer 2.5 from the menu. The selection takes effect immediately for your active development session.
No. Composer 2.5 was created by Cursor as the latest version of its in-house coding model. xAI has added it as a third-party option in the Grok Build model menu, allowing subscribers to use it alongside xAI's native grok-build-0.1 model for agentic coding workflows.
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