Key Differences
- •Sonnet 4.5 has a larger context window (1M vs 400k tokens)
- •GPT-5.4 mini has more recent training data (Aug 2025 vs Jan 2025)
- •GPT-5.4 mini is more affordable for input ($0.75 vs $3.00/1M tokens)
- •GPT-5.4 mini is more affordable for output ($4.50 vs $15.00/1M tokens)
- •GPT-5.4 mini is newer (released Mar 2026)
400k tokens
Context
1M tokens
Aug 2025
Knowledge
Jan 2025
Mar 2026
Released
Sep 2025
$0.75/1M
Input
$3.00/1M
$4.50/1M
Output
$15.00/1M
Both GPT-5.4 mini and Sonnet 4.5 are available on Zo Computer. Try them both to see which one works best for your use case.