OpenAI · AI model API pricing
How much does GPT-5.4 Nano cost?
OpenAI's price floor — for classification, extraction and other bulk work where speed beats depth.
Rate card
| Input tokens | $0.20 / 1M |
| Cached input | $0.02 / 1M |
| Output tokens | $1.25 / 1M |
| Context window | — |
What that means per month
| Workload | Tokens / month | Cost / month |
|---|---|---|
| Prototype | 1M in · 0.3M out | $0.57/mo |
| Small app | 10M in · 3M out | $5.75/mo |
| Production app | 50M in · 15M out | $28.8/mo |
| High volume | 200M in · 60M out | $115/mo |
| Heavy platform | 1B in · 300M out | $575/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 Nano ($5.75/mo):
-
Mistral Small 4 $3.30/mo -
DeepSeek V4 Flash $2.24/mo -
Gemini 2.5 Flash-Lite $2.20/mo