CursorEngineering PostOfficial Source
Introducing Grok 4.5
Grok 4.5 extends Cursor’s model pool to long-running tool work beyond coding, but its CursorBench result is excluded because an earlier Cursor code snapshot entered training.
Cursor
Source Summary
**Grok 4.5** is a mixture-of-experts model trained on Cursor interactions plus broader STEM and knowledge work. It is available across Cursor desktop, web, iOS, CLI, and SDK, with a base price of **$2/M input and $6/M output tokens**.
Practical Implication
Try it where an agent must investigate, use tools, recover, and verify across a long task. Keep Composer 2.5 in model-selection tests because Cursor positions the two as different weight classes rather than a direct replacement.
Agent-Ready Context
**Grok 4.5** is a mixture-of-experts model trained on Cursor interactions plus broader STEM and knowledge work. It is available across Cursor desktop, web, iOS, CLI, and SDK, with a base price of **$2/M input and $6/M output tokens**. Try it where an agent must investigate, use tools, recover, and verify across a long task. Keep Composer 2.5 in model-selection tests because Cursor positions the two as different weight classes rather than a direct replacement. Do not use its CursorBench standing as evidence: an earlier Cursor codebase snapshot entered training, and the impact is unknown. Cursor excluded that result and says the data was removed for future models.
Context Map
modelcodingresearch#reasoning#model-selection#coding-agentsUncertainty
Do not use its CursorBench standing as evidence: an earlier Cursor codebase snapshot entered training, and the impact is unknown. Cursor excluded that result and says the data was removed for future models.