Key Differences
- •Sonnet 4.5 is newer (released Sep 2025)
1M tokens
Context
1M tokens
Jan 2025
Knowledge
Jan 2025
May 2025
Released
Sep 2025
$3.00/1M
Input
$3.00/1M
$15.00/1M
Output
$15.00/1M
Both Sonnet 4 and Sonnet 4.5 are available on Zo Computer. Try them both to see which one works best for your use case.