Claude Fable 5 vs xAI: Grok 4.3
Compare Claude Fable 5 by Anthropic against xAI: Grok 4.3 by xAI, in 4 community votes, claude fable 5 wins 100% of head-to-head duels, context windows of 1.0M vs 1.0M, tested across 54 shared challenges.
Our Verdict
Claude Fable 5Winner
xAI: Grok 4.3Runner-up
Pick Claude Fable 5. In 4 blind votes, Claude Fable 5 wins 100% of the time. That's not luck.
xAI: Grok 4.3 is 20x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude Fable 5
Input
$10.00
Output
$50.00
xAI: Grok 4.3
Input
$1.25
8.0× cheaper
Output
$2.50
20× cheaper
xAI: Grok 4.3 is cheaper on both — 8.0× input, 20× output
Writing DNA
Style Comparison
Similarity
53%
Claude Fable 5 uses 58.2x more emoji
Claude Fable 5
xAI: Grok 4.3
60%Vocabulary62%
22wSentence Length16w
0.49Hedging0.46
4.0Bold2.3
3.5Lists2.5
0.58Emoji0.00
1.09Headings0.34
0.05Transitions0.14
Based on 27 + 27 text responses
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