Key Differences
- •GPT-5.5 has a larger context window (1.1M vs 400k tokens)
- •GPT-5.5 has more recent training data (Dec 2025 vs Aug 2025)
- •GPT-5.4 mini is more affordable for input ($0.75 vs $5.00/1M tokens)
- •GPT-5.4 mini is more affordable for output ($4.50 vs $30.00/1M tokens)
- •GPT-5.5 is newer (released Apr 2026)
400k tokens
Context
1.1M tokens
Aug 2025
Knowledge
Dec 2025
Mar 2026
Released
Apr 2026
$0.75/1M
Input
$5.00/1M
$4.50/1M
Output
$30.00/1M
Both GPT-5.4 mini and GPT-5.5 are available on Zo Computer. Try them both to see which one works best for your use case.