Helicone (Reseller)
OpenAI: GPT-5.1 Codex Mini Pricing
API pricing for OpenAI: GPT-5.1 Codex Mini via Helicone. Input tokens cost $0.25/1M, output tokens cost $2/1M with 400K context window.
Last updated:
Tools
Input Cost
$0.25
per 1M tokens
Output Cost
$2
per 1M tokens
Context Window
400K
tokens
Cost Calculator
Estimated Cost:
$0.00
Model Details
Reseller
Helicone
Model ID
gpt-5.1-codex-mini
Context Window
400K tokens
Max Output
128000 tokens
Cache Read Cost
$0.024999999999999998/1M
Sources