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ZenMux

GPT-5.2-Codex model ID, context window & pricing

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Quick facts

Model ID openai/gpt-5.2-codex
Source ZenMux
Context Window 400000
Pricing $1.75 input / $14.00 output per 1M tokens
Capabilities tool calling, reasoning

Model overview

GPT-5.2-Codex is an AI model from ZenMux with 400000 token context window and text, image, pdf input support.

Published pricing is $1.75 input and $14.00 output per 1M tokens.

  • Workloads that use text, image, pdf inputs with text outputs.
  • Agent and tool workflows that need function calling.
  • Reasoning-heavy prompts where stepwise problem solving matters.
Model ID openai/gpt-5.2-codex
Provider ZenMux
Family -
Status -
Knowledge Cutoff 2025-01-01
Release Date 2026-01-15
Input Modalities text, image, pdf
Output Modalities text
Context Window 400000
Input Limit -
Output Limit 64000
Tool Calling Yes
Reasoning Yes
Structured Output -
Temperature Control No
Open Weights No
Input Cost / 1M tokens $1.75
Output Cost / 1M tokens $14.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens $0.17
Cache Write Cost / 1M tokens -