π UPDATE β July 12, 2026
Elon Musk claims a new benchmark result for Grok 4.5: according to his post, the model ranks slightly above Fable β widely considered one of the strongest models available β on certain software benchmarks. If it holds up, that would be significant, as Fable has set a high bar in the LLM space. No specific benchmark names or score breakdowns were provided alongside the claim, and independent, named benchmark results published so far paint a more mixed picture.
@elonmusk Β· July 12, 2026"Grok 4.5 even ranks slightly above Fable, which is an incredibly good model, on some software benchmarks!"
π 1,868 Β |Β π 234 Β |Β π 568K
π UPDATE β July 12, 2026
Elon Musk has officially weighed in on Grok 4.5's capabilities, describing the model as "Opus class for browser use" β a direct comparison to Anthropic's top-tier Claude Opus lineup. The statement, posted on X with nearly 1 million views, signals that xAI is positioning Grok 4.5 as a serious competitor to the industry's most capable models for web-based tasks. It's the latest in a series of comparisons Musk has drawn between Grok 4.5 and Anthropic's frontier models since launch β this time narrowing the claim to a specific capability area.
Source: @elonmusk on X Β· 2,937 likes Β· 988K views
π UPDATE β July 11, 2026
Elon Musk has announced a free trial of Grok 4.5 accessible via the Grok Build CLI (Command Line Interface). This gives developers a hands-on way to test xAI's latest model without an upfront commitment β simply head to the Grok Build CLI to get started. The announcement was made directly on X and has already drawn significant attention, surpassing 625,000 views within hours of posting.
β @elonmusk via X Β· July 11, 2026
π UPDATE β July 10, 2026
Grok 4.5 just got a new home: Elon Musk announced that xAI's latest model is now accessible directly within the Perplexity platform, significantly broadening where users can interact with it. This integration means you no longer need to rely solely on Grok.com or the xAI API to try Grok 4.5 β Perplexity's search-native interface adds a new dimension to how the model can be used for research and Q&A. Musk shared the news on X, linking directly to the Perplexity experience. The move signals a growing push by xAI to distribute Grok 4.5 across third-party platforms beyond its own ecosystem.
β @elonmusk via X Β· 947K views
π UPDATE β July 10, 2026
Grok 4.5 has now claimed the top spot among all frontier models on Perplexity Computer evaluations β and xAI says it achieved this at "highly competitive costs." This positions Grok 4.5 not just as a raw performance leader in this benchmark category, but as a strong value proposition compared to rival models. The official @grok account confirmed the results alongside a chart showing its lead over competing frontier models.
π UPDATE β July 10, 2026
Grok 4.5 is now available on the free tier β any X or Grok account holder can try it via Grok Build starting today. xAI confirmed the rollout on their official account, inviting user feedback. Elon Musk also weighed in, claiming Grok 4.5 offers the best real-world ROI of any model currently available β a pointed value argument aimed at competing offerings.
π UPDATE β July 9, 2026
Grok 4.5 is now available to developers via the AI SDK, giving builders direct API access to xAI's latest model. On top of that, Elon Musk confirmed that a 1M+ token context window is coming soon to Grok β a massive leap that would allow the model to process entire codebases, lengthy documents, and complex multi-step tasks in a single prompt. Musk shared the announcement alongside a comparison of Grok against Claude Opus, signaling xAI's confidence in where the model stands competitively.
π UPDATE β July 9, 2026
Elon Musk has confirmed that Grok 4.5 is now running on OpenClaw, expanding the platforms where the model can be accessed beyond what was previously announced. Musk also shared a positive third-party review of Grok 4.5, signaling growing external validation of the model's capabilities. Both announcements were made via posts on X within hours of each other this morning.
@elonmusk Β· Jul 9, 2026 β Grok 4.5 on OpenClaw
π UPDATE β July 9, 2026
Elon Musk confirmed this morning that Grok 4.5 has landed at #1 on multiple benchmarks β performing "better than expected," according to his own words. Most notably, the model has claimed the top spot on the SWE marathon, a rigorous software engineering benchmark, signaling a major leap in coding and agentic capabilities. Musk followed up by personally urging users to try Grok 4.5 out, suggesting xAI is confident in its real-world performance beyond just leaderboard numbers.
π UPDATE β July 9, 2026
Elon Musk confirmed on X that Grok 4.5 has reached #1 rankings in certain performance benchmarks, including outperforming Fable 5 in some metrics β a notable milestone given Fable 5's strong competitive standing. This positions Grok 4.5 as a genuine top-tier contender across the broader AI landscape, not just within xAI's own lineup. Musk's post, which has already surpassed 465K views, signals growing confidence in Grok's trajectory against frontier competitors. No specific benchmark names were disclosed in the announcement.
π UPDATE β July 9, 2026
Grok 4.5 is expanding beyond the xAI ecosystem with two new third-party integrations. Users can now access Grok 4.5 inside Notion to manage meetings, documents, and company knowledge, and inside Convex to build full-stack applications β bringing the model's capabilities directly into popular developer and productivity workflows.
Both integrations were announced by the official @grok account on July 9, 2026, signaling that xAI is actively pushing Grok 4.5 into third-party platforms rather than keeping it exclusive to grok.com and the X app.
xAI dropped Grok 4.5 on July 8, 2026, calling it their strongest model to date. Built on a new foundation and trained on tens of thousands of NVIDIA GB300 GPUs, it's available right now across multiple platforms β including a live demo in Warp. Here's everything that matters.
1. It's Built on a Completely New Foundation
Grok 4.5 runs on xAI's 1.5T V9 foundation model β a significant architectural step up from previous versions. Training took place in xAI's Memphis data centers using tens of thousands of NVIDIA GB300 GPUs, with datasets spanning coding, science, engineering, and mathematics. Cursor training data was also incorporated during supplemental training, which partly explains the model's strong performance on developer-focused tasks.
2. Elon Musk Calls It an 'Opus-Class' Model
According to xAI, Grok 4.5 is designed to compete directly at the top tier of AI models. Elon Musk described it as an "Opus-class model" β positioning it against the most capable frontier models available β while emphasizing that it delivers competitive performance at better speed, token efficiency, and lower cost. That combination matters for developers and enterprises deciding where to route their workloads.
3. It's Available on More Platforms Than You'd Expect
Grok 4.5 isn't locked to a single entry point. According to xAI, it's accessible via the xAI API, is the default model in Grok Build, and is available through Cursor. It also ships as a plugin for Microsoft Word, PowerPoint, and Excel. For developers, model gateways including OpenRouter, Vercel, Cloudflare, Snowflake, and Databricks Mosaic all support it. X Premium and SuperGrok subscribers can access it directly through the Grok interface.
4. It's Genuinely Strong at Coding and Agentic Work
Grok 4.5 is specifically tuned for coding tasks β including Rust and C/C++ β and for agentic workflows where the model completes multi-step tasks autonomously. Beyond code, it handles finance and legal work, can build complex multi-sheet Excel models with live web research, design diagrams in PowerPoint, and write structured prose in Word. The Microsoft Office plugin integration makes this practically useful for a much wider audience than typical AI developer tools.
5. EU Users Will Have to Wait Until Mid-July
There's a notable geographic gap at launch. According to xAI, Grok 4.5 is not yet available in the EU β either through xAI products or the API console. Availability for EU users is expected in mid-July 2026. If you're based in Europe, the model is on its way but isn't accessible yet. Everyone else can try it today via Warp or through any of the supported platforms listed above.
6. You Can Try It Right Now in Warp
The fastest way to get hands-on with Grok 4.5 is through Warp, which xAI highlighted in their launch post. If you already have an X Premium or SuperGrok subscription, you can access it directly in the Grok interface as well. For developers, the xAI API is live and Grok 4.5 is set as the default in Grok Build β so if you've been building on earlier versions, the upgrade is already in place.
Grok 4.5 represents xAI's most serious push yet into the enterprise and developer market. The Microsoft Office integration in particular is an interesting move β it puts Grok directly into the workflows of millions of knowledge workers who may never open a dedicated AI interface. Whether the "strongest model ever" claim holds up under real-world use will become clearer quickly, but the breadth of access points at launch is genuinely notable.
Sources & reporting notes
The links below identify the material source records used for this report.
- @grok on X (2026-07-08T23:20:47.000Z) β Direct source
- @grok on X (2026-07-09T03:39:24.000Z) β Direct source
- @grok on X (2026-07-09T03:02:02.000Z) β Direct source
- @elonmusk on X (2026-07-09T06:42:10.000Z) β Direct source
- @elonmusk on X (2026-07-09T07:50:05.000Z) β Direct source
- @elonmusk on X (2026-07-09T07:20:21.000Z) β Direct source
- @elonmusk on X (2026-07-09T07:06:48.000Z) β Direct source
- @elonmusk on X (2026-07-09T08:34:34.000Z) β Direct source
- @elonmusk on X (2026-07-09T08:09:13.000Z) β Direct source
- @elonmusk on X (2026-07-09T16:21:42.000Z) β Direct source
- @grok on X (2026-07-09T16:14:18.000Z) β Direct source
- @elonmusk on X (2026-07-10T15:41:46.000Z) β Direct source
- @grok on X (2026-07-10T15:50:13.000Z) β Direct source
- @grok on X (2026-07-10T19:59:31.000Z) β Direct source
- @elonmusk on X (2026-07-10T21:05:19.000Z) β Direct source
- @elonmusk on X (2026-07-11T01:12:09.000Z) β Direct source
- @elonmusk on X (2026-07-12T21:01:09.000Z) β Direct source
- @elonmusk on X (2026-07-12T22:32:43.000Z) β Direct source
Source links are preserved as published or accessed. See our editorial standards and corrections policy.
The BASENOR Editorial Desk covers Tesla, SpaceX, and related technology, curating reporting from primary sources β official accounts, regulatory filings, and software release data. Every article passes source-record and fact-checking review before publication. About the newsroom.
This report was curated by the BASENOR Editorial Desk from the sources listed above. Read our editorial standards or email editorial@basenor.com to report an error.
