Key Differences
- •Sonnet 4.6 has a larger context window (1M vs 400k tokens)
- •Sonnet 4.6 has more recent training data (Aug 2025 vs Sep 2024)
- •GPT-5.1 Codex mini is more affordable for input ($0.25 vs $3.00/1M tokens)
- •GPT-5.1 Codex mini is more affordable for output ($2.00 vs $15.00/1M tokens)
- •Sonnet 4.6 is newer (released Feb 2026)
400k tokens
Context
1M tokens
Sep 2024
Knowledge
Aug 2025
Nov 2025
Released
Feb 2026
$0.25/1M
Input
$3.00/1M
$2.00/1M
Output
$15.00/1M
Both GPT-5.1 Codex mini and Sonnet 4.6 are available on Zo Computer. Try them both to see which one works best for your use case.