Grok 3 Technical Review: Everything You Need to Know

Grok 3 Technical Review: Everything You Need to Know

February 19, 2025· 6 minute read

Grok 3 just dropped and it's making big claims about being the "Smartest AI in the world". Built on massive computational resources and designed for real-time knowledge, it's xAI's strongest competitor yet.

With significant improvements over Grok 2, this model promises better coding skills, reasoning, and even scientific problem-solving.

But how well does it actually perform? Let's break it down.

Update: Grok 3 API now available & Grok Studio launched 🚨

xAI has released the Grok 3 API with pricing starting at $3 per million tokens. Grok Studio, a canvas-style tool for creating docs and apps, is also now available.

Table Of Contents

What's New in Grok 3?

Grok 3 is a massive leap forward from its predecessor. Here's what changed:

Fun Fact 💡

Grok 3 remains largely uncensored and interestingly uses Wikipedia as a source quite a lot despite Elon Musk's public criticism of the platform.

So How Smart is Grok 3? Here's the Benchmarks and Real-World Performance

Benchmarks: Grok 3 vs ChatGPT vs Gemini vs Claude

On paper, Grok 3 outperforms its rivals in various technical domains. Let's look at some numbers.

According to benchmark results shown in xAI's release demo, Grok 3 scores higher than Gemini-2 Pro, DeepSeek V3, GPT-4o, and Claude 3.5 Sonnet in math (AIME), science (GPQA), and coding tasks (LiveCodeBench).

Image source: Outlook Business: Grok 3 Performance Against GPT-4o

Fun Fact 💡

Grok 3 is said to have successfully solved fresh, unseen problems in the 2025 AIME math competition.

LMArena Benchmarks

Perhaps more notably, in blind user-voted evaluations on LMArena—a crowd-sourced LLM benchmarking platform—Grok 3 has set a new milestone.

Unlike traditional AI benchmarks that rely on static test sets, LMArena uses live human feedback in a blind A/B test format, making it one of the most reliable indicators of real-world AI performance.

An early version of Grok 3 (codenamed "Chocolate") has officially taken the #1 spot, outperforming models like GPT-4o, Claude 3.5 Sonnet, and Gemini 1.5 Pro.

Grok 3 Breaks Records

Impressively, Grok 3 simultaneously became the first-ever model to break the 1400 ELO score barrier on LMArena—outperforming all other models across all categories, including overall, Hard Prompts (Prompts that utilize a pre-designed template to elicit model outputs), Coding, Math, Creative Writing, Instruction Following, Longer Query Handling, and Multi-Turn Conversations.

Grok 3 in the Wild: Real-World Reviews

Early real-world tests show mixed but promising results. While Grok 3's reasoning is top-tier, its performance in some areas still lags behind OpenAI's best models.

Strengths

✔️ Advanced Reasoning
Andrej Karpathy—who got early access— noted on X that Grok 3's "Thinking" mode solves complex problems better than many competitors. It successfully solved a tricky Settlers of Catan programming task that stumped most other models.

✔️ Logic
The model performed well on structured logic problems, solving multiple tic-tac-toe challenges with proper chains of thought.

✔️ Deep Search
Its Deep Search tool was praised for finding high-quality information on recent events, such as Apple launch rumors and stock surges, similar in depth and quality to Perplexity's Deep Research but not at the level of OpenAI's.

Weaknesses

🆇 Coding Performance
An early user on X found Grok 3 struggled with somewhat complex coding, at least compared to GPT-4o and Claude which coded up better solutions as shown below.

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🆇 Math & Symbolic Logic
While strong in structured problem-solving, it failed Andrej Karpathy's Unicode emoji mystery challenge, whereas DeepSeek's R1 performed better.
In his tweet, Karpathy said "[Grok 3] did not solve my question where I give a smiling face with an attached message hidden inside Unicode variation selectors, even when I give a strong hint on how to decode it in the form of Rust code. The most progress I've seen is from DeepSeek-R1 which once partially decoded the message."

🆇 Humor & Creativity
The model lacks any advanced abilities for humor. When asked for jokes, it repeatedly gave variations of the same puns, similar to older LLMs, as Andrej Karpathy shared in his tweet.

🆇 Fact-checking Issues
In the same tweet, Andrej also found Grok 3 hallucinating citations and even inventing fake URLs, similar to problems seen in other LLMs.

Final Thoughts

Overall, Grok 3 has been impressive so far but not perfect—and seemingly not the "Smartest AI in the world" as Musk claims as it still lags behind other LLMs in some areas.

Grok 3 still lags behind OpenAI's best models in benchmarks, and its real-world performance is mixed. Just take a look at the benchmark from earlier with OpenAI o3 added:

How to Access Grok 3

Grok 3 is now available through multiple channels:

Grok 3 API Pricing

xAI is offering two flavors of its flagship model via its API:

Model Version Input Tokens Output Tokens Speedier Version (Input) Speedier Version (Output)
Grok 3 $3 per million $15 per million $5 per million $25 per million
Grok 3 Mini $0.30 per million $0.50 per million $0.60 per million $4 per million

This pricing is comparable to Anthropic's Claude 3.7 Sonnet, but more expensive than Google's Gemini 2.5 Pro, which typically scores higher on AI benchmarks.

Monitoring your xAI app with Helicone ⚡️

The easiest way to monitor and debug your xAI applications. Start capturing traces in production. Integrate in minutes.

from openai import OpenAI

client = OpenAI(
    api_key="your-x-ai-api-key",
    base_url="https://x.helicone.ai/v1/chat/completions"
)

response = client.chat.completions.create(
    model="grok-3",
    messages=[
        {"role": "user", "content": "Say this is a test"}
    ]
)
print(response.choices[0].message.content)

Grok Studio: The New Canvas-Style Creation Tool

On April 15, 2025, xAI introduced Grok Studio, a new feature that allows users to:

This feature puts Grok in direct competition with similar offerings from other AI companies:

Grok Studio is available to both free and paid users.

What's Next for xAI and Grok?

xAI continues to expand its offerings. Here's what's coming next:

Final Thoughts: Is Grok 3 the Undisputed King?

Grok 3 is xAI's most serious attempt at competing with OpenAI, Google, and others. It's a leap forward in AI capability, with superior reasoning and a massive compute infrastructure behind it.

However, despite the improvements, Grok 3 is not yet the undisputed best as it still lags behind OpenAI's o3 model in benchmarks.

With the recent release of its API and Grok Studio, xAI is clearly positioning itself as a full-spectrum AI provider, moving beyond just a chatbot to offer developer tools and creative workspaces. This puts it in direct competition with established players like OpenAI and Anthropic, who have already made similar moves.

That said, xAI's rapid progress with Grok has been nothing short of remarkable and it will be interesting to see how it evolves in the coming months.

Frequently Asked Questions

What is Deep Search, and how does it work?

Deep Search is Grok 3's research-style retrieval system. Instead of just pulling up search results, it actively reads, synthesizes, and cross-verifies information before responding.

How much does Grok 3 API cost?

Grok 3 costs $3 per million input tokens and $15 per million output tokens. A speedier version is available for $5 per million input tokens and $25 per million output tokens. There's also a Grok 3 Mini version with lower pricing.

What is Grok Studio?

Grok Studio is a canvas-style tool that allows users to create and edit documents, write code, and build basic applications. It's similar to OpenAI's Canvas and Anthropic's Artifacts, and integrates with Google Drive.

Does Grok 3 have memory?

Not yet, but memory features are planned for future updates.

What is Grok 3's context window?

Grok 3 has a 1 million token context window.