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GPT-5.3 Codex vs GPT-5.1 Codex mini
Compare these two AI models side by side on Zo Computer
Key Differences
- •GPT-5.3 Codex has more recent training data (Aug 2025 vs Sep 2024)
- •GPT-5.1 Codex mini is more affordable for input ($0.25 vs $1.75/1M tokens)
- •GPT-5.1 Codex mini is more affordable for output ($2.00 vs $14.00/1M tokens)
- •GPT-5.3 Codex is newer (released Feb 2026)
400k tokens
Context
400k tokens
Aug 2025
Knowledge
Sep 2024
Feb 2026
Released
Nov 2025
$1.75/1M
Input
$0.25/1M
$14.00/1M
Output
$2.00/1M
Both GPT-5.3 Codex and GPT-5.1 Codex mini are available on Zo Computer. Try them both to see which one works best for your use case.