All Models
Grok 4.1 Fast Reasoning vs Kimi K2.5
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 262k tokens)
- •Grok 4.1 Fast Reasoning has more recent training data (Nov 2024 vs Jan 2024)
- •Grok 4.1 Fast Reasoning is more affordable for input ($0.20 vs $0.50/1M tokens)
- •Grok 4.1 Fast Reasoning is more affordable for output ($0.50 vs $2.80/1M tokens)
- •Kimi K2.5 is newer (released Jan 2026)
2M tokens
Context
262k tokens
Nov 2024
Knowledge
Jan 2024
Nov 2025
Released
Jan 2026
$0.20/1M
Input
$0.50/1M
$0.50/1M
Output
$2.80/1M
Both Grok 4.1 Fast Reasoning and Kimi K2.5 are available on Zo Computer. Try them both to see which one works best for your use case.