Applied AI @SpaceXAI, Founder @ChartThePath, Forecasting @IIForecasters, ex @shv @h2oai
Joined September 2025
- Tweets104
- Following337
- Followers285
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Jon Farland retweeted
Introducing Grok 4.6.
It delivers frontier intelligence and is a significant improvement over Grok 4.5 at the same price.
Jon Farland retweeted
I would have assumed it was fairly obvious, but in case it's not: a million-line codebase (also known as a "harness"), running at inference time, orchestrating thousands of calls to a neural network for any given task, is the exact definition of a "neurosymbolic architecture"
Jon Farland retweeted
Critical feedback for the Grok Build harness, Grok foundation model and Imagine is super appreciated
We ship updates to Grok Imagine weekly and always appreciate your feedback
xitter.gq/doganuraldesign/status…
Jon Farland retweeted
In the last couple weeks, X has been joined by:
Mark Zuckerberg
Jensen Huang
Denny’s
Bernard Arnault
Welcome to the global town square.
Jon Farland retweeted
we open-sourced the full Grok Build app for anyone to take a look at the code :)
you can see all parts of how the agent loop runs, how the terminal rendering works, compaction, goals, subagents and more
We've open-sourced Grok Build and have reset usage limits for all users.
Open sourcing Grok Build allows anyone to support making a reliable and robust harness. Check out our code, including the Git repo for the Grok Build CLI.
x.ai/open-source
Jon Farland retweeted
Grok is back. Congrats @spacexai team!
Big news: Grok-4.5 has landed #3 in the Code Arena: Frontend.
- On par with GLM-5.2 (Max) and Claude Opus 4.8 (Thinking)
- Significant improvement over Grok-4.3 (#62 -> #3)
- #2 for Content Creation Tools, Simulations, Gaming and Reference-Based Design
- #3 for Consumer Product
Congrats to @spacexai, now in the #3 spot in Code Arena: Frontend!
Jon Farland retweeted
Very impressed with @spacexai's Grok 4.5 model. Inside the Computer harness, it scored the highest on our internal benchmark WANDR, which measures agentic research capabilities, at half the price of Claude Opus 4.8 (high); and scores even better than our current GLM 5.2 post-trained model at approximately the same cost.
Jon Farland retweeted
Grok 4.5 just constructed an explicit counterexample to hypercontractivity for the Poisson semigroup (the square root of the Laplace–Beltrami operator) on the 4-sphere.
Back in 2021, with Rupert Frank arxiv.org/abs/2101.06209 we proved that hypercontractivity holds in dimensions ≤3 and fails in sufficiently large dimensions (for example, in dimension 13). Grok's example shows that it already fails in dimension 4, making our earlier result sharp.
I also tested this problem on several other frontier AI models. One of them also managed to find a counterexample, but I particularly like Grok 4.5's solution: it is explicit, simple, and elegant.
The attached files were generated entirely by Grok 4.5 build (with zero intervention on my side).
Jon Farland retweeted
SpaceXAI just released Grok 4.5, and it ranks #4 on GDPval-AA v2 with an Elo of 1543 - behind only the latest Claude releases from Anthropic on real-world agentic knowledge work tasks
Grok 4.5 achieved this score at a cost of $0.49 per GDPval task to sit clearly on the Pareto frontier for performance versus cost. This cost is lower than GLM-5.2 and Kimi K2.6, and nearly 90% cheaper than the models ahead of it on our leaderboard.
We’re finalizing the remaining Artificial Analysis Intelligence Index evaluations and will share final results soon.
Thanks to @spacexai and @elonmusk for their collaboration testing this model ahead of release, and congratulations on the launch!
Jon Farland retweeted
We are now @spacexai.
Jon Farland retweeted
Grok's realtime voice is now on AI Gateway. Build with AI SDK 7:
• 𝚡𝚊𝚒/𝚐𝚛𝚘𝚔-𝚟𝚘𝚒𝚌𝚎-𝚝𝚑𝚒𝚗𝚔-𝚏𝚊𝚜𝚝-𝟷.𝟶 (𝚞𝚜𝚎𝚁𝚎𝚊𝚕𝚝𝚒𝚖𝚎)
• 𝚡𝚊𝚒/𝚐𝚛𝚘𝚔-𝚝𝚝𝚜 (𝚐𝚎𝚗𝚎𝚛𝚊𝚝𝚎𝚂𝚙𝚎𝚎𝚌𝚑)
• 𝚡𝚊𝚒/𝚐𝚛𝚘𝚔-𝚜𝚝𝚝 (𝚝𝚛𝚊𝚗𝚜𝚌𝚛𝚒𝚋𝚎)
vercel.com/changelog/xai-gro…
Jon Farland retweeted
/goal is live on Grok Build.
We use a team of agents:
- implementors
- skeptics
- code reviewers
- planners
and a mix of grok build and composer in various roles.
Would love to hear your feedback on how ambitious you can be with /goal and where the gaps are
Jon Farland retweeted
Grok models are now available on Databricks Agent Bricks.
Bring SpaceXAI's latest models to your enterprise data to power capable AI agents.
x.ai/news/grok-databricks
Jon Farland retweeted
Excited to share that Grok 4.3 from @elonmusk's @xai is now available on Amazon Bedrock.
Customers pick the right model for the right job, and we keep making that easier: aws.amazon.com/about-aws/wha…
Jon Farland retweeted
SpaceX has exercised the option to acquire @cursor_ai in an all-stock transaction with the goal of building the world’s most useful AI models.
For the past few months, SpaceXAI has been jointly training a model with Cursor, which will be released in Cursor and Grok Build soon.
We look forward to working closely with the Cursor team to advance our frontier AI capabilities
SpaceXAI and @cursor_ai are now working closely together to create the world’s best coding and knowledge work AI.
The combination of Cursor’s leading product and distribution to expert software engineers with SpaceX’s million H100 equivalent Colossus training supercomputer will allow us to build the world’s most useful models.
Cursor has also given SpaceX the right to acquire Cursor later this year for $60 billion or pay $10 billion for our work together.
Jon Farland retweeted
Grok Build enables real time software build editing. Now I can beta test and make code changes in real time with the prompt "Create on the fly beta test user comment tracker. Use submits and selects "Fix Now or Fix Later". Activate agent to ingest comments every 10 minutes. Track comment completion in list. Interrupt user, if active, for approval to push changes to github and deploy.".
