Composer 2.5 Launches in Grok Build, Targets Coding Market
Cursor’s latest AI coding model, Composer 2.5, is now available in Grok Build, according to an announcement on June 1, 2026. The model has quickly gained attention for its ability to handle long-running software tasks and follow intricate instructions, making it a significant update in the competitive AI development space.
Composer 2.5 is the newest iteration of the Composer series, first released on May 18, 2026. Key upgrades include expanded reinforcement learning with targeted textual feedback and training on more complex synthetic coding tasks, such as reimplementing features with testing as a reward mechanism. These enhancements aim to improve workflows involving multi-file edits, terminal commands, and agent-like operations. Early benchmarks position Composer 2.5 as a contender to models like Claude Opus 4.7 and GPT-5.5, although it trails the latter on terminal-specific tests.
The model is offered in two pricing tiers: Standard ($0.50 per million input tokens, $2.50 per million output tokens) and Fast ($3.00 per million input tokens, $15.00 per million output tokens). The Fast variant, which prioritizes low latency, is the default option. Composer 2.5 remains exclusive to Cursor’s integrated development environment (IDE) and does not currently provide a standalone API.
Its integration into Grok Build underscores Cursor’s focus on extending Composer’s usability for developers working within AI-powered coding platforms. Users can access the model via the IDE’s /model menu, enabling seamless selection and deployment for coding tasks.
Market observers have noted that Composer 2.5’s pricing model undercuts several competitors, such as Claude Opus 4.7, while still delivering comparable performance. This positions it as an attractive option for cost-sensitive software engineering teams. However, GPT-5.5 continues to set the bar for terminal-intensive workflows, leaving Cursor with room for further optimization in future updates.
With demand for advanced coding models on the rise, Composer 2.5 could carve out a substantial niche among developers prioritizing affordability and multi-tasking capabilities. Its exclusive availability within Cursor’s ecosystem may also drive adoption of the broader Cursor IDE platform.
As the AI coding model space continues to heat up, Composer 2.5’s mix of technical sophistication and competitive pricing strategy will be worth watching for its potential to challenge incumbents in both performance and market share.