openai
OpenAI: GPT-5 Mini API Pricing
OpenAI: GPT-5 Mini costs $0.250 per 1M input tokens and $2.00 per 1M output tokens (cache reads: $0.025). Context window: 400K. Prices verified 2026-08-23 · source
Input / 1M tokens
$0.250
Output / 1M tokens
$2.00
Context window
400K
Max output
128K
What would OpenAI: GPT-5 Mini cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $10.00 |
| Coding agent | 5,000 | 8,000 / 2,000 | $30.00 |
| RAG pipeline | 30,000 | 4,000 / 500 | $60.00 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $14.00 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About OpenAI: GPT-5 Mini
GPT-5 Mini is a compact version of GPT-5, designed to handle lighter-weight reasoning tasks. It provides the same instruction-following and safety-tuning benefits as GPT-5, but with reduced latency and cost....