# xAI Releases Grok 4.5: Opus-Class Model Optimized for Coding and Agents

> Elon Musk's xAI has released Grok 4.5, pitching it as an Opus-class model that is, in Musk's words, roughly comparable to Anthropic's Opus 4.7 but much faster. Built on the company's 1.5 trillion parameter V9 foundation, the model is aimed squarely at coding, agents, and knowledge work, and it posts an 83.3% score on the Terminal-Bench 2.1 benchmark for agentic terminal tasks. The detail that raised eyebrows is the training data: xAI says Grok 4.5 was trained partly on real Cursor developer session logs, an approach meant to ground the model in how programmers actually work rather than on synthetic problems. Pricing is the other lever, at $2 per million input tokens and $6 per million output, sharply undercutting Opus at $5 and $25. Grok has spent much of its life as the provocative outsider among frontier models. A cheaper, faster, coding-focused release signals xAI wants to compete on the same practical ground as the labs, not just on personality, and the aggressive pricing puts real pressure on incumbents.

_Section: [Daily AI Updates](https://www.wortins.com/daily-ai) · Source: TechCrunch · Published Wednesday, July 22, 2026_

## Wortins' read

Elon Musk's xAI has released Grok 4.5, pitching it as an Opus-class model that is, in Musk's words, roughly comparable to Anthropic's Opus 4.7 but much faster. Built on the company's 1.5 trillion parameter V9 foundation, the model is aimed squarely at coding, agents, and knowledge work, and it posts an 83.3% score on the Terminal-Bench 2.1 benchmark for agentic terminal tasks. The detail that raised eyebrows is the training data: xAI says Grok 4.5 was trained partly on real Cursor developer session logs, an approach meant to ground the model in how programmers actually work rather than on synthetic problems. Pricing is the other lever, at $2 per million input tokens and $6 per million output, sharply undercutting Opus at $5 and $25. Grok has spent much of its life as the provocative outsider among frontier models. A cheaper, faster, coding-focused release signals xAI wants to compete on the same practical ground as the labs, not just on personality, and the aggressive pricing puts real pressure on incumbents.

## Source

[Read the full story at TechCrunch](https://techcrunch.com/2026/07/08/spacexai-releases-grok-4-5-which-elon-describes-as-an-opus-class-model/)

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