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SpaceXAI launches Grok 4.5, trained with Cursor, offering enhanced coding and agentic capabilities

SpaceXAI has launched Grok 4.5, its most advanced model to date, designed for coding, agentic tasks, and knowledge work. The model was trained on extensive datasets and leverages advanced reinforcement learning techniques, reportedly outperforming leading models in engineering tasks and offering improved token efficiency and lower costs. Notably, Grok 4.5 was trained in conjunction with Cursor, incorporating user interactions with codebases and software tools, which is expected to enhance its capabilities in practical development scenarios. AI

IMPACT Sets a new benchmark for coding and agentic tasks, potentially accelerating enterprise adoption of AI-powered development tools.

RANK_REASON Frontier-lab model release with system card.

Read on r/cursor →

AI-generated summary · Google Gemini · from 16 sources. How we write summaries →

SpaceXAI launches Grok 4.5, trained with Cursor, offering enhanced coding and agentic capabilities

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Frontier Release
Frontier-lab model release with system card.
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model release, product
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COVERAGE [16]

  1. xAI news TIER_1 English(EN) ·

    Introducing Grok 4.5

    Grok 4.5 is SpaceXAI's smartest model built for coding, agentic tasks, and knowledge work.

  2. TLDR AI TIER_1 English(EN) · TLDR ·

    Grok 4.5 🤖, GPT-Live 🎙️, SWE-1.7 👨‍💻

  3. dev.to — LLM tag TIER_1 English(EN) · albe_sf ·

    Grok 4.5 is Here, And It's All About Developer Efficiency

    <p>xAI's Grok 4.5 just shipped, and the main takeaway isn't just its performance, but its sharp focus on developer economics. With significantly lower token counts on coding tasks and aggressive pricing, it's a direct challenge to the cost-per-task of established models.</p> <h2>…

  4. dev.to — LLM tag TIER_1 English(EN) · Prashant Lakhera ·

    📌 Grok 4.5 is closed-source, so I rebuilt Grok 2 from what xAI left open on Hugging Face📌

    <p>Yesterday XAI dropped Grok 4.5: <a href="https://x.ai/news/grok-4-5" rel="noopener noreferrer">https://x.ai/news/grok-4-5</a><br /> Exciting release, but it's closed source. No weights, no training code, no architecture docs to dig into.<br /> So I did the next best thing: wen…

  5. dev.to — LLM tag TIER_1 Türkçe(TR) · Tobias Hoffmann ·

    Grok 4.5 Trained on Cursor Sessions: What Does it Mean for Developers?

    <p><a href="https://x.ai/news/grok-4-5" rel="noopener noreferrer">Grok 4.5 tanıtım materyallerinde</a>, benchmark sonuçlarından daha uzun vadeli etkisi olabilecek bir ifade var: model “Cursor ile birlikte eğitildi.” <a href="https://cursor.com/blog/grok-4-5" rel="noopener norefer…

  6. dev.to — LLM tag TIER_1 Español(ES) · Roobia ·

    Grok 4.5 was trained with Cursor sessions: What it means for developers

    <p>Enterrada en los <a href="https://x.ai/news/grok-4-5" rel="noopener noreferrer">materiales de lanzamiento de Grok 4.5</a> hay una frase más importante que cualquier benchmark: el modelo “fue entrenado junto con Cursor”. Según la <a href="https://cursor.com/blog/grok-4-5" rel="…

  7. r/cursor TIER_2 (SL) · /u/Physical_Storage2875 ·

    No Grok 4.5 available?

    <!-- SC_OFF --><div class="md"><p>So I have the latest version of Cursor and since release I don't get Grok 4.5.</p> <p>Btw: I'm an EU user if it matters somehow.</p> </div><!-- SC_ON --> &#32; submitted by &#32; <a href="https://www.reddit.com/user/Physical_Storage2875"> /u/Phys…

  8. r/cursor TIER_2 (AF) · /u/Easy_Zucchini_3529 ·

    Grok 4.5 disappeared

    <!-- SC_OFF --><div class="md"><p>I was using Grok 4.5 in the first day that was launched, and out of the sudden in the next day it disappeared from Cursor.</p> <p>Is Cursor flagging developers or disabling it randomly?</p> </div><!-- SC_ON --> &#32; submitted by &#32; <a href="h…

  9. r/cursor TIER_2 English(EN) · /u/anonymous_2600 ·

    how/what do u feel about grok4.5?

    <!-- SC_OFF --><div class="md"><p>good?</p> </div><!-- SC_ON --> &#32; submitted by &#32; <a href="https://www.reddit.com/user/anonymous_2600"> /u/anonymous_2600 </a> <br /> <span><a href="https://www.reddit.com/r/cursor/comments/1urstme/howwhat_do_u_feel_about_grok45/">[link]</a…

  10. r/cursor TIER_2 English(EN) · /u/_janc_ ·

    Why I still cannot find Grok 4.5 in cursor available models?

    <!-- SC_OFF --><div class="md"><p>I have updated cursor app. Refresh the model list, but still I can only see grok 4.3 and grok build 0.1. But I can see the Grok 4.5 in their web page ui. Anyone knows why?</p> </div><!-- SC_ON --> &#32; submitted by &#32; <a href="https://www.red…

  11. r/cursor TIER_2 English(EN) · /u/NoFaithlessness951 ·

    wheres grok 4.5 in cursor?

    <!-- SC_OFF --><div class="md"><p>I've seen the post that has been released in Cursor, but I don't see it anywhere I tried to restart cursor. I tried pressing the refresh button on the models in settings, usually it appears instantly when a new model is released where is it?</p> …

  12. r/cursor TIER_2 English(EN) · /u/ChatGepetto ·

    Introducing Grok 4.5 | SpaceXAI

    <table> <tr><td> <a href="https://www.reddit.com/r/cursor/comments/1ur1dum/introducing_grok_45_spacexai/"> <img alt="Introducing Grok 4.5 | SpaceXAI" src="https://external-preview.redd.it/DaBLt-G5g9Gzdy6ER2dcqdG9UE8A1r56NXMs-LJg668.jpeg?width=640&amp;crop=smart&amp;auto=webp&amp;…

  13. r/cursor TIER_2 English(EN) · /u/Soggy-Skin-5103 ·

    Anyone tried Grok 4.5 yet?

    <!-- SC_OFF --><div class="md"><p>How good does it do compared to Opus?</p> <p>Let's say Opus thinks in 2 Dimensions and Fable in 3 - How many is 4.5?</p> </div><!-- SC_ON --> &#32; submitted by &#32; <a href="https://www.reddit.com/user/Soggy-Skin-5103"> /u/Soggy-Skin-5103 </a> …

  14. r/cursor TIER_2 English(EN) · /u/lrobinson2011 ·

    Grok 4.5 is now available in Cursor

    <table> <tr><td> <a href="https://www.reddit.com/r/cursor/comments/1ur0f4b/grok_45_is_now_available_in_cursor/"> <img alt="Grok 4.5 is now available in Cursor" src="https://preview.redd.it/iam1f8c6p1ch1.png?width=640&amp;crop=smart&amp;auto=webp&amp;s=d7942d89b802fac96a2fd89b981e…

  15. r/singularity TIER_2 English(EN) · /u/ObiWanCanownme ·

    Introducing Grok 4.5

    <table> <tr><td> <a href="https://www.reddit.com/r/singularity/comments/1ur0ye6/introducing_grok_45/"> <img alt="Introducing Grok 4.5" src="https://external-preview.redd.it/DaBLt-G5g9Gzdy6ER2dcqdG9UE8A1r56NXMs-LJg668.jpeg?width=640&amp;crop=smart&amp;auto=webp&amp;s=54d671f78c4f5…

  16. r/singularity TIER_2 (AF) · /u/reefine ·

    Grok 4.5 is live

    <table> <tr><td> <a href="https://www.reddit.com/r/singularity/comments/1ur06sj/grok_45_is_live/"> <img alt="Grok 4.5 is live" src="https://preview.redd.it/3s6zt3uvn1ch1.jpeg?width=640&amp;crop=smart&amp;auto=webp&amp;s=96ec68caf45d52e625fc4f60099e6bda0a0a4ce8" title="Grok 4.5 is…