Is KAT-Coder-Pro-V2 or GPT-5.1-Codex cheaper?

KAT-Coder-Pro-V2 is cheaper on output tokens ($1.20 vs $10.00 per 1M).

Which has the larger context window, KAT-Coder-Pro-V2 or GPT-5.1-Codex?

GPT-5.1-Codex has the larger context window (400K tokens).

KAT-Coder-Pro-V2 vs GPT-5.1-Codex

KAT-Coder-Pro-V2 is cheaper on output tokens, while GPT-5.1-Codex offers a larger context window. Choose KAT-Coder-Pro-V2 or GPT-5.1-Codex based on the trade-off between cost, context, and the benchmarks that matter for your use case.

Spec	KAT-Coder-Pro-V2	GPT-5.1-Codex
Provider	ZenMux	ZenMux
Input / 1M tokens	$0.30	$1.25
Output / 1M tokens	$1.20	$10.00
Context window	256K	400K
Parameters	—	—
Open weights	No	No
Released	Mar 2026	Nov 2025

KAT-Coder-Pro-V2 details →GPT-5.1-Codex details →

FAQ

Pricing is indicative — confirm with the provider before production use. Highlighted values indicate the better figure for that row.