GPT-5.4 nano API pricing — cost per million tokens
OpenAI's GPT-5.4 nano costs $0.2 per million input tokens and $1.25 per million output tokens on the standard API tier (verified 2026-07-05). Compare it in the full pricing table or price your own prompts in the token cost calculator.
GPT-5.4 nano price per million tokens
| direction | $ / Mtok | $ / 1K tokens |
|---|---|---|
| input (prompt) | $0.2 | $0.0002 |
| output (completion) | $1.25 | $0.00125 |
What real requests cost on GPT-5.4 nano
| workload | input | output | total |
|---|---|---|---|
| Chat message (1K in / 500 out) | $0.0002 | $0.000625 | $0.000825 |
| Long document (100K in / 2K out) | $0.02 | $0.0025 | $0.0225 |
| Agent session (500K in / 50K out) | $0.10 | $0.0625 | $0.16 |
How GPT-5.4 nano pricing compares
On the same chat-message workload, GPT-5.4 nano costs 2.9× more than DeepSeek V4 Flash (the cheapest tracked model) — capability, latency and context limits are the other side of that trade. Output tokens dominate long generations: at $1.25/Mtok, a 50K-token agent transcript costs $0.0625 in output alone. Official rate card: OpenAI pricing.
Related: GPT-5.5 pricing · GPT-5.6 Luna pricing · DeepSeek V4 Flash pricing · release timeline
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