Key Differences
- •GPT-5.1 Codex mini has a larger context window (400k vs 200k tokens)
- •Opus 4.6 has more recent training data (May 2025 vs Sep 2024)
- •GPT-5.1 Codex mini is more affordable for input ($0.25 vs $5.00/1M tokens)
- •GPT-5.1 Codex mini is more affordable for output ($2.00 vs $25.00/1M tokens)
- •Opus 4.6 is newer (released Feb 2026)
400k tokens
Context
200k tokens
Sep 2024
Knowledge
May 2025
Nov 2025
Released
Feb 2026
$0.25/1M
Input
$5.00/1M
$2.00/1M
Output
$25.00/1M
Both GPT-5.1 Codex mini and Opus 4.6 are available on Zo Computer. Try them both to see which one works best for your use case.