# Introducing Grok 4.5

Source: [Cursor](https://cursor.com/blog/grok-4-5)  
Feed7 permalink: https://feed7.dev/p/grok-4-5-1n0zgxx  
Published: Unknown  
Trust: Official Source (official_source)

## Why Included

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.

## 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

- Layer: model
- Domains: coding, research
- Topics: reasoning, model-selection, coding-agents

## Uncertainty

- 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.

## Agent Instruction

Use this item as source-backed context. Do not invent claims beyond the linked source. If this item conflicts with another source, call out the conflict.