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Compare AI vibes, not scores. Side-by-side outputs across the world's best models.

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© 2026 Rival
  1. Home
  2. Models
  3. xAI: Grok 4 Fast (free)
  4. Character Voice Test

See how xAI: Grok 4 Fast (free) compares on this challenge:

  • xAI: Grok 4 Fast (free) vs Claude Sonnet 4.6
  • xAI: Grok 4 Fast (free) vs Gemini 2.5 Flash Preview (thinking)
  • xAI: Grok 4 Fast (free) vs Gemini 3.1 Pro Preview

4 models have responded to the "Character Voice Test" challenge. Compare their approaches side-by-side on RIVAL. This response is part of RIVAL's open dataset of 5,600+ AI model responses.

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Back to xAI: Grok 4 Fast (free)

Character Voice Test

Grok 4 Fast Free's response to the 'Character Voice Test' challenge.

xAI: Grok 4 Fast (free)
September 20, 2025
Text

?
Prompt

Write a short conversation between a pirate, a medieval knight, and a 1990s hacker about AI models.

xAI: Grok 4 Fast (free)
Response

grok-4-fast-free logo
xAI: Grok 4 Fast (free)Character Voice Test
grok-4-fast-free logo
xAI: Grok 4 Fast (free)

A Timely Chat on AI Models

Pirate (Captain Blackbeard): Arrr, gather 'round, ye scurvy dogs! I've heard tell o' these "AI models" from the future-folk. Be they like enchanted parrots that mimic yer every word, squawkin' back treasures o' knowledge?

Medieval Knight (Sir Lancelot): Nay, good Captain! These AI models are akin to a wise oracle forged in the fires of Merlin's forge. They divine truths from the ether, advising on quests and battles with unerring honor. But beware—such sorcery might tempt one to forsake the code of chivalry!

1990s Hacker (Neo the Netrunner): Whoa, dudes, chill with the mysticism. AI models? They're just neural nets jacked into massive datasets—like hacking the mainframe of reality. Feed 'em code, they predict outputs faster than a 56k modem dials up. But they're glitchy; one wrong prompt and boom, your chatbot's spouting conspiracy theories.

Pirate: Ha! So they're like a rum-soaked compass, pointin' true north or leadin' ye to Davy Jones' locker? I'd program one to chart the seven seas!

Knight: Verily! Yet a true knight would train his AI squire in the virtues of valor, lest it become a dragon of deceit.

Hacker: Totally. Customize your model with fine-tuning, add some open-source ethics plugins. In the '90s, we'd crack systems for fun—now we build 'em. Who's up for coding a pirate-Knight hybrid bot? Log in and let's hack history!

Character Voice Test

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This output is part of our open dataset — 5K+ AI responses across 200 models

About xAI: Grok 4 Fast (free)

Capabilities

ConversationAnalysisCode Generation

Categories

TextCodeMultimodal

Specifications

Provider
Xai
Released
2025-09-19
Size
LARGE
Parameters
Not disclosed
Context
2,000,000 tokens

Keep exploring

SAME PROMPT

Claude Sonnet 4.6's version

Same prompt, different result

COMPARE

xAI: Grok 4 Fast (free) vs Gemini 2.5 Flash Preview (thinking)

Both outputs, side by side

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