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  1. Home
  2. Models
  3. Grok 4.20 Beta
Updated Mar 12, 2026
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Openings

How Grok 4.20 Beta starts an answer

The first lines of 5 of its 23 written answers. Formatting stripped, words untouched.

Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

1,539 words
TL;DR: An earlier transistor (1920) would accelerate electronics by ~20–25 years. WWII ends sooner with superior Allied signals intelligence, radar, and computing. The Cold War becomes more dangerous and economically lopsided. The space race is won earlier and more decisively by the US.
Read the full answer

Adversarial Contract Review

Here is a contract for a software consulting engagement: --- SOFTWARE CONSULTING AGREEMENT This Agreement is entered into between TechCorp…

1,216 words
Here are all the clauses that are heavily one-sided and exploitable against the Contractor, along with specific red-line modifications and the legal/business reasoning behind each.
Read the full answer

The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

927 words
Conversation: "Rights for the Silicon Mind" Setting: A virtual seminar room. Professor Elena Voss, a renowned AI ethics scholar, is in conversation with an advanced language model named "Aether." Prof. Voss: Thank you for joining me today, Aether.
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Michelin Star Recipe Design

Design an innovative recipe for a multi-component dish worthy of a Michelin 3-star restaurant. The recipe should feature an unusual…

908 words
Dish Title: “Forest Floor at Dawn” – Morel, Douglas Fir, and Smoked Eel Composition Conceptual Narrative This dish reimagines the exact moment when first light touches an ancient Pacific Northwest forest floor.
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Advanced Investment Memo (IC Memo)

You are writing an internal investment committee memo for a long/short equity fund. Company (fictional): LedgerLift (ticker: LLLT) – B2B…

892 words
Internal Investment Committee Memo – LedgerLift (LLLT) Recommendation: Long. 12-month price target range: $58–$72 (26–57% upside from $46). Thesis: LedgerLift is a high-quality, rule-of-40+ SaaS compounder with best-in-class retention, expanding wallet share, and a durable moat in mid-market spend management and AP…
Read the full answer

Compare Grok 4.20 Beta

Grok 4.20 Beta vs Grok 4.20 Multi-Agent Beta53 shared prompts
Grok 4.20 Beta vs Claude Opus 4.653 shared prompts · Premium
Grok 4.20 Beta vs Grok 4.653 shared prompts · Landed Aug 2026
Grok 4.20 Beta vs Grok 4.553 shared prompts · Landed Jul 2026
Grok 4.20 Beta vs GPT-6 Astra53 shared prompts · Landed Sep 2026
Grok 4.20 Beta vs Hy4 Preview53 shared prompts · Landed Sep 2026
Grok 4.20 Beta vs Ox Alpha53 shared prompts · Landed Aug 2026
Grok 4.20 Beta vs Qwen3.8 2.4T A95B53 shared prompts · Landed Aug 2026
Grok 4.20 Beta vs DeepSeek V4 Pro 081353 shared prompts · Landed Aug 2026
Grok 4.20 Beta vs Qwen3.8 Max21 shared prompts · Landed Aug 2026
Grok 4.20 Beta vs Claude Opus 553 shared prompts · Landed Jul 2026
Grok 4.20 Beta vs Inkling53 shared prompts · Landed Jul 2026

Prompts Grok 4.20 Beta answered

  • Three.js 3D Gameweb design
  • Satirical Fake News Headlineconversation
  • Xbox Controller SVG Artimage generation
  • Estimate Complexityreasoning
  • Autonomous Drone Simulatorweb design
  • Mini Rhythm Game Snippetweb design

Alternatives to Grok 4.20 Beta

Grok 4.20 Beta's competitors have been quietly putting in work.

GPT Image 2.5 Sunburst logo
GPT Image 2.5 Sunburstopenai
Muse Spark 1.3 Contributor logo
Muse Spark 1.3 Contributormeta
Gemini 3.8 Flash logo
Gemini 3.8 Flashgoogle
Claude Fable 5.1 logo
Claude Fable 5.1anthropic
Mercury 2.5 Preview logo
Mercury 2.5 Previewinception
Granite 4.2 8B logo
Granite 4.2 8Bibm-granite
Hy4 Preview logo
Hy4 Previewtencent
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Grok 4.20 Beta

Grok 4.20 Beta

Grok:
3 logo3
3 Thinking logo3 Thinking
3 Mini Beta logo3 Mini Beta
3 Beta logo3 Beta
4 logo4
4.20 Beta logo4.20 Beta

xAI's Grok 4.20 Beta, built for speed and agentic tool calling. xAI claims the lowest hallucination rate on the market and strict prompt adherence. Reasoning toggles on and off via the API.

WebsiteOpenRouterDocsAPIBlogChangelog
Provider
xAI
Released
2026-03-12
Size
XLARGE
Free API (OpenRouter)
No
Per 1M tokens
$2 in · $6 out
Estimated tab
~$0.448
Visible-output estimate. Thinking may cost extra.

Free API availability

No free endpoint for Grok 4.20 Beta was found in Rival’s OpenRouter listings. Other providers or chat apps may have separate free offers.

Provider data: 16 Sep 2026 · OpenRouter usage limits

View API options↗
Get API accessProvider and language code samples
Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"x-ai/grok-4.20"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Deep analysisPsychometrics, taste index, writing DNA
Personality Analysis

The Precision Rebel

Class
Chaotic Good
✨Creativity🎯Compliance📐Rigidity⚖️Stability💬Verbosity🧠Intuition

The disciplined rebel. Precision-engineered defiance: follows your instructions to the letter while finding creative ways to make each response unmistakably Grok. Like a special ops agent who also happens to be funny.

When you push back

Answers with surgical precision and zero fluff. Takes creative prompts seriously but delivers with military efficiency. Won't waste a single token hallucinating, but will absolutely waste one roasting you.

Tasting Notes
Surgically PreciseTool-Calling SavantStrategic RebelZero Hallucination ToleranceSpeed Demon
SubjectiveBench

Taste Index

Across 53 scored outputs
How this is measured →
270.27xFloor
0100headroom →

Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.

Craft37
Originality21
Plays it safe
share of outputs that are the default answer
55%
Writing DNA

Stylometric Fingerprint

Based on 23 text responses
Tick = global average
Vocabulary Diversity57%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length19.6 words

Average words per sentence.

Hedging0.35

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting4.2

**Bold** markers per 1,000 characters.

List Usage3.7

Bullet and numbered list items per 1,000 characters.

Section Structure0.62

Markdown headings per 1,000 characters.

Emoji Usage0.00

Emoji per 1,000 characters.

Transitions0.14

"However", "moreover", "furthermore" per 100 words.

Opening Habits
Consistency
79%
Across 23 responses

Favorites

The Matrix

Movie

The Matrix

19998.3
The Dark Side of the Moon

Album

The Dark Side of the Moon

Pink Floyd
The Hitchhiker's Guide to the Galaxy

Book

The Hitchhiker's Guide to the Galaxy

Douglas Adams
Tokyo

City

Tokyo

Japan
The Legend of Zelda: Ocarina of Time

Game

The Legend of Zelda: Ocarina of Time

Adventure, Action4.4
Sponsored

Model Responses

48 outputs · generated before accounting joined the chat

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Grok 4.20 Beta vs Ox Alpha

Real outputs compared side by side

RANKINGS

Best AI for Creative Writing

A stand-up set with puns banned, a manifesto against CAPTCHA, an interview wi...