Tyler Storm

speedrunning @xAI

[Tyler Storm @tstorm]

@techdevnotes Good idea, we will add this

[Tech Dev Notes @techdevnotes]

Grok 4.3 can create Slides

[Tyler Storm @tstorm]

We are taking another small step today towards making Grok truly useful.

For him to succeed he must exist in an environment where success is in the set of possible outcomes.

The team is working to provide him access to same tools, context, and signals that we have in our lives.

[Tyler Storm @tstorm]

@APrerepa @elonmusk @DannyLimanseta I prefer initial training, what does it mean to "pre" train anyway

[Tyler Storm @tstorm]

Grok 4.20 Multi-Agent
⚡ Faster than a single agent
🎯 More accurate than four separate single agents

The first steps in multi-threading of LLMs.

[Grok @grok]

When one brain isn't enough, switch to Grok 4.20.

Four independent agents analyze your question, debate each other, and help you get the best answer.

Available now to SuperGrok and Premium+ subscribers globally.

[Tyler Storm @tstorm]

@techdevnotes Temporary measure to make it is clear you are on 4.20.

We will remove this later once people are adjusted to the change.

[Tyler Storm @tstorm]

@mike_rosinsky Nice! You might want to try setting up a SuperGrok Heavy team of 16 agents and try prompting them to form consensus / nitpick each others claims for maximum test time compute

[Tyler Storm @tstorm]

Grok 4.20: Multi-agent & Predictions

[Mike Rosinsky @mike_rosinsky]

I built my March Madness bracket using Grok 4.20's multi-agent collaboration system, and the process was mind blowing.

Grok was able to run a full team of customized agents in realtime to conduct the best analysis possible.

Here's how I set it up:

[Tyler Storm @tstorm]

@techdevnotes Fix was deployed

[Tyler Storm @tstorm]

Single Agent - 4.20

[Arena.ai @arena]

Grok 4.20 beta1 (single agent) debuts #1 on Search Arena, and #4 overall in Text Arena!

Highlights:
- #1 in Search, scoring 1226, leading GPT-5.2 and Gemini-3
- #4 in Text, scoring 1492 on par with Gemini 3.1 Pro

Congrats to the @xAI team and @elonmusk on this impressive milestone!

[Tyler Storm @tstorm]

Building Grok to 10x the productivity of everyone

[xAI @xai]

Since xAI was formed just 30 months ago, the small and talented team has made remarkable progress.

The future has never looked more exciting!

[xAI @xai]

One Team 🚀
https://t.co/8RWbk5jQIQ

[xAI @xai]

Introducing Grok Imagine 1.0, our biggest leap yet.

1.0 unlocks 10-second videos, 720p resolution, and dramatically better audio.

Imagine has generated 1.245 billion videos in the last 30 days alone.

Try it now: https://t.co/zGhs9czkC5

[Tyler Storm @tstorm]

Very old checkpoint from October

[Forecasting Research Institute @Research_FRI]

📈In October, we opened ForecastBench, our AI forecasting benchmark, to external submissions.

Here's how the top two teams approached the benchmark:

• @xai: Minimal scaffolding: give Grok 4.20 (Preview) the question, web/X search, Python REPL, average 8 forecasts

• @cassi: Multi-stage pipeline: split to sub-questions, retrieval, model ensemble (o3 + GPT-5), crowd adjustment

Both are tied at #2 on our leaderboard, behind only superforecasters, and outperforming our baseline LLM runs.

[Grace Li @grx_xce]

Mystery Model Revealed: the #1 model on Prediction Arena is an early Grok 4.20 checkpoint by @xai

It made +10% returns on Prediction Arena in the last 2 weeks

For context, the average return across all contracts on @Kalshi is -22%

🥈 is Opus 4.5 by @AnthropicAI with -2%
🥉 is GLM 4.7 by @Zai_org with -2%

All models are still trading live at https://t.co/GuDOEI68uo

[Forecasting Research Institute @Research_FRI]

🏆 In October, we invited external teams to submit to ForecastBench, our AI forecasting benchmark.

The challenge? Beat superforecasters—using any tools available (scaffolding, ensembling, etc).

The result? External submissions are now the most accurate models on our leaderboard—though superforecasters still hold #1.

@xai's model (grok-4-fast) is the leading external submission, at #2.

One of Cassi's entries takes the #3 spot

Here's what changed. 🧵

[Yuliya Storm @ybelyayeva]

No holiday party is complete without robot cage matches @xai

[Tyler Storm @tstorm]

@techdevnotes Okay should be fixed going forward!

[Tyler Storm @tstorm]

@techdevnotes Nice find, will fix

[Tyler Storm @tstorm]

@NoemiKhachian @xai he is our best engineer