OpenAIGPT-5.4 Nano pricing
$0.20 per 1M input tokens and $1.25 per 1M output tokens. In real work that is 0.15¢ per chat answer and 0.33¢ to summarize a 20-page PDF.
What GPT-5.4 Nano costs per task
Token counts estimated from a measured model of the same lab (GPT-6 Luna), rescaled by tokenizer. Reasoning tokens are billed as output.
| Task | Cost | Tokens used | Price rank | Basis |
|---|---|---|---|---|
| Answer a chat question | 0.15¢$1.48 / 1,000 | 45 in · 540 out · 639 reasoning | 135 of 336 | estimated |
| Reply to a customer email | 0.02¢$0.17 / 1,000 | 258 in · 94 out | 42 of 336 | estimated |
| Write a 1,500-word blog post | 0.30¢$2.96 / 1,000 | 59 in · 2,217 out · 143 reasoning | 92 of 336 | estimated |
| Write 10 product descriptions | 0.13¢$1.33 / 1,000 | 283 in · 987 out · 34 reasoning | 41 of 336 | estimated |
| Translate 1,000 words | 0.20¢$2.01 / 1,000 | 1,330 in · 1,328 out · 67 reasoning | 102 of 336 | estimated |
| Proofread one page (500 words) | 0.11¢$1.09 / 1,000 | 718 in · 664 out · 91 reasoning | 99 of 336 | estimated |
| Summarize a 20-page PDF | 0.33¢$3.26 / 1,000 | 12,987 in · 449 out · 84 reasoning | 96 of 336 | estimated |
| Extract data from an invoice | 0.08¢$0.78 / 1,000 | 373 in · 422 out · 140 reasoning | 86 of 336 | estimated |
| Analyze a 200-row spreadsheet | 0.44¢$4.45 / 1,000 | 4,779 in · 456 out · 2,338 reasoning | 61 of 336 | estimated |
| Answer from 5 retrieved documents (RAG) | 0.12¢$1.16 / 1,000 | 3,690 in · 234 out · 104 reasoning | 71 of 336 | estimated |
| Classify 100 support tickets | 0.15¢$1.55 / 1,000 | 1,261 in · 445 out · 590 reasoning | 51 of 336 | estimated |
| Review 500 lines of code | 0.75¢$7.48 / 1,000 | 4,557 in · 337 out · 4,921 reasoning | 120 of 336 | estimated |
| Write a SQL query | 0.10¢$1.00 / 1,000 | 126 in · 266 out · 516 reasoning | 107 of 336 | estimated |
| Run a 50-step coding agent | 8.7¢$86.92 / 1,000 | 2,237,500 in · 15,000 out · 7,000 reasoning | 42 of 336 | modeled |
Price at every provider
List prices per 1M tokens (input / output) at each host serving GPT-5.4 Nano through OpenRouter today. Hosts can differ in quantization, context and speed.
| Provider | Input / output | Cached input | Context | Uptime |
|---|---|---|---|---|
OpenAIunknown | $0.10 / $0.62 | $0.01 | 400K | 100% |
 Azureunknown | $0.20 / $1.25 | $0.02 | 400K | 100% |
OpenAIunknown | $0.20 / $1.25 | $0.02 | 400K | 100% |
Azureunknown | $0.22 / $1.38 | $0.022 | 400K |
Price history
First seen in our price history on Mar 23, 2026 at $0.20 input / $1.25 output. The list price has not changed since.
FAQ
How much does GPT-5.4 Nano cost?
GPT-5.4 Nano costs $0.20 per 1 million input tokens and $1.25 per 1 million output tokens, with cached input at $0.02 (list price on Oct 18, 2026). In practice one chat answer costs about 0.15¢ and summarizing a 20-page PDF about 0.33¢.
Where is GPT-5.4 Nano cheapest?
Among 4 providers we track, the lowest list price today is at OpenAI: $0.10 input and $0.62 output per 1M tokens.
Does GPT-5.4 Nano charge for reasoning tokens?
Yes. Reasoning (thinking) tokens are billed as output tokens. That is why the cost per task can be much higher than the visible answer suggests - our task costs include them.
Is the GPT-5.4 Nano cost per task measured or estimated?
Estimated: GPT-5.4 Nano was not run directly. Tokens come from GPT-6 Luna and are rescaled by the tokenizer of OpenAI. Real usage can differ.