GPT-5.2 API cost calculator
GPT-5.2 (OpenAI) is priced at $1.75 per million input tokens, $0.175 for cached input, and $14 per million output tokens — half that through the Batch API. Verified 2026-09-17 against OpenAI's pricing page.
What GPT-5.2 costs for common workloads
| Workload | Per request | Per day | Per month |
|---|---|---|---|
| Support chatbotShort turns with a reused system prompt — 3k in, 400 out, 60% cached. | $0.0080 | $40.07 | $1,202 |
| RAG over documentsRetrieved context dominates — 12k in, 500 out, 30% cached. | $0.022 | $33.49 | $1,005 |
| Coding agentGrowing context every turn — 20k in, 1.5k out, 80% cached. | $0.031 | $92.40 | $2,772 |
| Batch classificationTiny prompts at volume through the Batch API — 800 in, 20 out. | $0.0008 | $168 | $5,040 |
Its blast radius when an agent loops
The coding-agent workload above at 30 requests a minute — $55.44 an hour — priced at each point a team usually finds out:
Hourly alert
$55.44
Next morning
$1,331
After a weekend
$3,326
Monthly invoice
$39,917