Key Differences
- •Sonnet 4 has a larger context window (1M vs 200k tokens)
- •Haiku 4.5 has more recent training data (Feb 2025 vs Jan 2025)
- •Haiku 4.5 is more affordable for input ($1.00 vs $3.00/1M tokens)
- •Haiku 4.5 is more affordable for output ($5.00 vs $15.00/1M tokens)
- •Haiku 4.5 is newer (released Oct 2025)
200k tokens
Context
1M tokens
Feb 2025
Knowledge
Jan 2025
Oct 2025
Released
May 2025
$1.00/1M
Input
$3.00/1M
$5.00/1M
Output
$15.00/1M
Both Haiku 4.5 and Sonnet 4 are available on Zo Computer. Try them both to see which one works best for your use case.