snhatti

[Eric Jiang @veggie_eric]

Grok 4.5 is my default for all my coding work, I freaking love this model. Frontier intelligence that won't break the bank.

Grok 4.5: $2 in / $6 out
GPT 5.6: $5 in / $30 out
Opus 4.8: $5 in / $25 out

[Michael Truell @mntruell]

Excited to release Grok 4.5 with @SpaceXAI.

It's an Opus-class model that's fast and low cost. It's a significant step up over any model we've developed so far, including Composer 2.5, and has become the daily driver for many on our team.

First of many releases. More soon.

[SpaceXAI @SpaceXAI]

Announcing Grok 4.5, our first model trained specifically for coding and agents. It was trained with Cursor and offers frontier intelligence at leading speeds and cost efficiency.

https://t.co/i8HpU7w64k

[Andy Jassy @ajassy]

Project Hail Mary is now on Prime Video, free for Prime members everywhere.

It’s my favorite movie that I've seen in a long time. Truly outstanding and unique. Phil Lord and Chris Miller pulled off something remarkable, Ryan Gosling is amazing, and none of this happens without Andy Weir’s compelling book.

If you missed it in theaters, now's your chance. And, if you already saw it, it's an easy way to rewatch.

Think you'll enjoy.

[SpaceXAI @SpaceXAI]

Introducing Voice Agent Builder: a no-code platform to create human-like voice agents with Grok Voice.

Available today at $0.05 / min.

https://t.co/kUkF7zqvfR

[SpaceXAI @SpaceXAI]

State of the art voice APIs from SpaceXAI, now in the Vercel AI Gateway

[Elon Musk @elonmusk]

Grok 4.5, based on our 1.5T V9 foundation model, with Cursor data added in supplemental training, is now in private beta at SpaceX & Tesla. Early evals show performance close to, perhaps exceeding Opus.

RL is continuing to significantly improve the model, and the Grok Build harness gets better every day.

Nice work by all those involved!

Completely trained from scratch new models will be released by @SpaceX every month this year.

[Dhruv Batura @dbatura]

Today, we're releasing @XMoney to a subset of US Premium+ users to collect feedback and iron out issues ahead of a broader launch. As appreciation for being an early user, we're extending our internal perks to this group for a limited time. Notifications going out now!

[snhatti @snhatti]

@AWS @xai
Grok 4.3 is live on Amazon Bedrock.
This changes the math for anyone running Generative AI applications and agents in production. Amazon Bedrock gives builders access to the best models through a single API, with enterprise security and guardrails already handled. No infrastructure tax. No compliance overhead. Pick the right model for the job and ship.
@grok
Grok 4.3 has the lowest hallucination rate of any frontier model. Not "competitive," lowest. It's ranked #1 on a real-world tool-calling benchmark, meaning when your agent needs to take action, not just generate text, it executes reliably. For customer support, legal research, financial document analysis, or any workflow where a wrong answer costs real money, that distinction is everything.

Now pair that accuracy with economics. Grok 4.3 delivers 2-10x more intelligence per dollar than other frontier models at $1.25/M input tokens. This isn't a budget model punching above its weight. It sits on the Pareto frontier of intelligence versus cost. You get both.

Context? 1M tokens. An entire codebase. A full regulatory filing. No chunking pipelines. No retrieval workarounds. Input and go.
Reasoning? Configurable per request. None for simple routing. High for multi-step legal analysis. You decide the compute-quality tradeoff at the request level, not the architecture level.

If you're building enterprise AI today, you've been living with a tradeoff: pay more for accuracy, or accept errors at scale. Grok 4.3 on Bedrock removes that tradeoff.
Lowest hallucination rate. Best intelligence-per-dollar. 1M token context. Configurable reasoning. All through an API you already use.

Go build.

[snhatti @snhatti]

Grok is your camera - go imagine

[Elon Musk @elonmusk]

Grok on Bedrock

[Matt Garman @mattsgarman]

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: https://t.co/N2Fbeg7CIA

[Ron Conway @RonConway]

Introducing “Comeback City: A Love Letter to San Francisco.” Proud to call this place home.

[snhatti @snhatti]

@ibab @zeeshanp_ Congratulations 🎉! Very exciting!

[Amazon @amazon]

BREAKING NEWS: Amazon 30-minute delivery is here. ⚡️📦

Amazon Now is a new ultra-fast delivery service bringing thousands of items—like fresh groceries, household essentials, last-minute necessities, and more—to your door in about 30 minutes or less. It's available today in dozens of U.S. cities, including Atlanta, Dallas-Fort Worth, Philadelphia, and Seattle, with plans to expand to tens of millions of customers this year.

To deliver in minutes, Amazon Now uses a network of smaller fulfillment locations strategically placed close to where customers live and work, reducing delivery distance and enabling faster delivery times.

Prime members pay $3.99 per order. Visit https://t.co/mC0XLwNppN to check availability.

[Artificial Analysis @ArtificialAnlys]

xAI has launched Grok 4.3, achieving 53 on the Artificial Analysis Intelligence Index with improved agentic performance, ~40% lower input price, and ~60% lower output price than Grok 4.20

The release of Grok 4.3 places @xAI just above Muse Spark and Claude Sonnet 4.6 on the Intelligence Index, and a 4 points ahead of the latest version of Grok 4.20. Grok 4.3 improves its Artificial Analysis Intelligence Index score while reducing cost to run the benchmark suite.

Key Takeaways:

➤ Grok 4.3 improves on cost-per-intelligence relative to Grok 4.20 0309 v2: it scores higher on the Intelligence Index while costing less to run the full benchmark suite. Grok 4.3 costs $395 to run the Artificial Analysis Intelligence Index, around 20% lower than Grok 4.20 0309 v2, despite using more output tokens. This makes it one of the lower-cost models at its intelligence level

➤ Large increase in real world agentic task performance: The largest single benchmark improvement is on GDPval-AA, where Grok 4.3 scores an ELO of 1500, up 321 points from Grok 4.20 0309 v2’s score of 1179 Grok 4.3, surpassing Gemini 3.1 Pro Preview, Muse Spark, Gpt-5.4 mini (xhigh), and Kimi K2.5. Grok 4.3 narrows the gap to the leading model on GDPval-AA, but still trails GPT-5.5 (xhigh) by 276 Elo points, with an expected win rate of ~17% against GPT-5.5 (xhigh) under the standard Elo formula

➤ Grok 4.3’s performs strongly on instruction following and agentic customer support tasks. It gains 5 points on 𝜏²-Bench Telecom to reach 98%, in line with GLM-5.1. Grok 4.3 maintains an 81% IFBench score from Grok 4.20 0309 v2

➤ Gains 8 points on AA-Omniscience Accuracy, but at the cost of lower AA-Omniscience Non-Hallucination Rate of 8 points, so Grok 4.20 0309 v2 still leads AA-Omniscience Non-Hallucination Rate, followed by MiMo-V2.5-Pro, in line with Grok 4.3

Congratulations to @xAI and @elonmusk on the impressive release!

[Elon Musk @elonmusk]

Major upgrade to 𝕏 advertising

[snhatti @snhatti]

@RonConway Get well ❤️‍🩹 soon! You make a big difference!!!

[Nikita Bier @nikitabier]

𝕏 has always been the best source of financial news for traders and investors. Billions of dollars are allocated every day based on what people read on Timeline.

Today we're launching our new Cashtags feature in the US and Canada on iPhone, bringing real-time financial data to X.

Here's how it works:

1. When you search for or post a cashtag (or contract address), X will automatically suggest matching stocks or crypto tokens, so you can select the exact asset you had in mind.

2. Anyone who taps a Cashtag will see posts mentioning it along with its price chart—without ever leaving X.

This ensures that you're always matched to the chatter for the right stock or token.

Cashtags are just the first step in our commitment to be the best destination for the finance and crypto community.