Key Differences
- •Sonnet 4.5 has more recent training data (Jan 2025 vs May 2024)
- •GPT-4.1 mini is more affordable for input ($0.40 vs $3.00/1M tokens)
- •GPT-4.1 mini is more affordable for output ($1.60 vs $15.00/1M tokens)
- •Sonnet 4.5 is newer (released Sep 2025)
1M tokens
Context
1M tokens
May 2024
Knowledge
Jan 2025
Apr 2025
Released
Sep 2025
$0.40/1M
Input
$3.00/1M
$1.60/1M
Output
$15.00/1M
Both GPT-4.1 mini and Sonnet 4.5 are available on Zo Computer. Try them both to see which one works best for your use case.