Key Differences
- •GPT-5.1 Codex mini has a larger context window (400k vs 262k tokens)
- •GPT-5.1 Codex mini has more recent training data (Sep 2024 vs Jan 2024)
- •GPT-5.1 Codex mini is more affordable for input ($0.25 vs $0.50/1M tokens)
- •GPT-5.1 Codex mini is more affordable for output ($2.00 vs $2.80/1M tokens)
- •Kimi K2.5 is newer (released Jan 2026)
400k tokens
Context
262k tokens
Sep 2024
Knowledge
Jan 2024
Nov 2025
Released
Jan 2026
$0.25/1M
Input
$0.50/1M
$2.00/1M
Output
$2.80/1M
Both GPT-5.1 Codex mini and Kimi K2.5 are available on Zo Computer. Try them both to see which one works best for your use case.