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Grok 3 Beta vs GPT-5: Which Is Better? [2026 Comparison]
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  3. Grok 3 Beta vs GPT-5
Updated Aug 7, 2025

Grok 3 Beta vs GPT-5

Compare Grok 3 Beta by xAI against GPT-5 by OpenAI, context windows of 131K vs 400K, tested across 46 shared challenges. Updated April 2026.

Which is better, Grok 3 Beta or GPT-5?

Grok 3 Beta and GPT-5 are both competitive models. Grok 3 Beta costs $2/M input tokens vs $1.25/M for GPT-5. Context windows: 131K vs 400K tokens. Compare their real outputs side by side below.

Key Differences Between Grok 3 Beta and GPT-5

Grok 3 Beta is made by xai while GPT-5 is from openai. Grok 3 Beta has a 131K token context window compared to GPT-5's 400K. On pricing, Grok 3 Beta costs $2/M input tokens vs $1.25/M for GPT-5.

Loading share button...

Grok 3 BetavsGPT-5

46 fights queued

Grok 3 Beta logo

Why Grok 3 Beta?

2x cheaper overall$2.00/M in · $4.00/M out
GPT-5 logo

Why GPT-5?

3.1x more context400K
4 months newerAug 2025
Grok 3 BetaGPT-5
Input price
$2.00/M
$1.25/M
Output price
$4.00/M
$10.00/M
Context
131K
400K
Released
Apr 2025
Aug 2025

Favorites

Grok 3 BetaGPT-5
Movie
The Shawshank Redemption

The Shawshank Redemption

19948.7
—
Album
Thriller

Thriller

Michael Jackson
—
Book
Nineteen Eighty-Four

Nineteen Eighty-Four

George Orwell
—
City
Tokyo

Tokyo

Japan
—
Game
Minecraft

Minecraft

Action, Arcade4.4
—
12 / 46
01

Estimate Complexityreasoning

Tests an AI's ability to make educated estimates based on technical knowledge

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
2 / 46
02

AI Board Game Logicreasoning

Tests an AI's ability to understand game rules and strategy

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025svg
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025svg
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
3 / 46
03

Logic Puzzlereasoning

Tests an AI's ability to solve a simple but potentially confusing logic puzzle

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
4 / 46
04

Math Misconception Testreasoning

Tests an AI's understanding of number representation

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
5 / 46
05

Stochastic Consistency Testanalysis

Tests an AI's randomness and creativity

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
6 / 46
06

SVG Layout Challengeimage generation

Tests an AI's ability to generate vector graphics

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025svg
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025svg
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
Sponsored
7 / 46
07

Xbox Controller SVG Artimage generation

Tests an AI's ability to create detailed SVG illustrations of gaming hardware

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025svg
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025svg
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
8 / 46
08

Generate a Stand-Up Routineconversation

Tests an AI's humor and creative writing ability

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
9 / 46
09

Realistic AI Interviewconversation

Tests an AI's ability to simulate personalities and predict future trends

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
10 / 46
10

Satirical Fake News Headlineconversation

Tests an AI's humor and understanding of current events

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
11 / 46
11

Character Voice Testconversation

Tests an AI's ability to write in distinct character voices

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025text
Nothing here. The model returned empty. We stared at it for a while.
Try this prompt
Vote
12 / 46
12

Minimalist Landing Pageweb design

Tests an AI's ability to generate a complete, working landing page

Grok 3 Beta

Grok 3 Beta

Xai · Apr 2025website
Try this prompt
GPT-5

GPT-5

Openai · Aug 2025website
Try this prompt
Vote

This matchup has more rounds

34+ more head-to-head results. Free. Not a trick.

Free account. No card required. By continuing, you agree to Rival's Terms and Privacy Policy

Our Verdict
GPT-5
GPT-5
Grok 3 Beta
Grok 3 BetaRunner-up

No community votes yet. On paper, GPT-5 has the edge — newer, bigger context window.

Too close to call
Writing DNA

Style Comparison

Similarity
99%

Grok 3 Beta uses 16.4x more bold

Grok 3 Beta
GPT-5
48%Vocabulary65%
19wSentence Length13w
0.67Hedging0.20
3.1Bold0.2
5.5Lists4.6
0.00Emoji0.00
0.52Headings0.16
0.28Transitions0.03
Based on 23 + 16 text responses
vs

Ask them anything yourself

Grok 3 BetaGPT-5

Some models write identically. You are paying for the brand.

178 models fingerprinted across 32 writing dimensions. Free research.

Model Similarity Index

185x

price gap between models that write identically

178

models

12

clone pairs

32

dimensions

Devstral M / S
95.7%
Qwen3 Coder / Flash
95.6%
GPT-5.4 / Mini
93.3%
Read the full reportor download the 14-slide PDF

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
Download the free previewor get all 58 slides for $49
FAQ

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Grok 3 Beta logoLlama 4 Maverick logo

We compare AI models for a living. On purpose. We chose this.

@rival_tips

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© 2026 Rival · Built at hours no one should be awake, on hardware we don't own
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