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Grok 4.1 Fast Reasoning vs Sonnet 4
Compare these two AI models side by side on Zo Computer
Key Differences
- •Grok 4.1 Fast Reasoning has a larger context window (2M vs 1M tokens)
- •Sonnet 4 has more recent training data (Jan 2025 vs Nov 2024)
- •Grok 4.1 Fast Reasoning is more affordable for input ($0.20 vs $3.00/1M tokens)
- •Grok 4.1 Fast Reasoning is more affordable for output ($0.50 vs $15.00/1M tokens)
- •Grok 4.1 Fast Reasoning is newer (released Nov 2025)
2M tokens
Context
1M tokens
Nov 2024
Knowledge
Jan 2025
Nov 2025
Released
May 2025
$0.20/1M
Input
$3.00/1M
$0.50/1M
Output
$15.00/1M
Both Grok 4.1 Fast Reasoning and Sonnet 4 are available on Zo Computer. Try them both to see which one works best for your use case.