OpenAI · AI model API pricing
How much does GPT-5.4 Mini cost?
Previous-generation small model, still listed — cheap and capable for simple high-volume tasks.
Rate card
| Input tokens | $0.75 / 1M |
| Cached input | $0.07 / 1M |
| Output tokens | $4.5 / 1M |
| Context window | — |
What that means per month
| Workload | Tokens / month | Cost / month |
|---|---|---|
| Prototype | 1M in · 0.3M out | $2.10/mo |
| Small app | 10M in · 3M out | $21/mo |
| Production app | 50M in · 15M out | $105/mo |
| High volume | 200M in · 60M out | $420/mo |
| Heavy platform | 1B in · 300M out | $2,100/mo |
Standard on-demand rates from OpenAI's official pricing page, last checked 2026-07-16. Monthly figures exclude caching and batch discounts. Confirm live pricing before committing.
Cheaper alternatives
At a reference workload of 10M input / 3M output tokens a month, these cost less than GPT-5.4 Mini ($21/mo):
-
Grok 4.3 $20/mo -
GLM-4.7 $12.6/mo -
Mistral Large 3 $9.50/mo