Helicone
OpenAI: GPT-5 Codex
gpt-codex
Model ID gpt-5-codex
Provider Helicone
Family gpt-codex
Status -
Knowledge Cutoff 2025-01
Release Date 2025-01-01
Input Modalities text
Output Modalities text
Context Window 400000
Input Limit -
Output Limit 128000
Tool Calling Yes
Reasoning No
Structured Output -
Temperature Control No
Open Weights No
Input Cost / 1M tokens $1.25
Output Cost / 1M tokens $10.00
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens $0.13
Cache Write Cost / 1M tokens -