OpenAI
GPT-5.4 Nano
GPT-5.4 Nano is a OpenAI model with 400K context, $0.20 in / $1.25 out per million tokens, last verified September 3, 2026. Open weights: no. Public-board scores are linked to the publisher; vendor-only figures stay in the watch-out, not on the board.
GPT-5.4 Nano is OpenAI's cheapest small tier for classification and extraction at $0.20/$1.25.
Catalog record checked September 3, 2026Individual provider fields may change
| Specification | GPT-5.4 Nano |
|---|---|
| Provider | OpenAI |
| Tier | Budget |
| Context window | 400K |
| Max output | 128K |
| Input / 1M tokens | $0.20 |
| Output / 1M tokens | $1.25 |
| Weights | Closed |
| Parameters | Not disclosed |
| Reasoning levels | none, low, medium, high |
| Modalities | text, image |
| API model id | gpt-5.4-nano |
| Released | March 17, 2026 |
Pricing tiers: Standard $0.20/$1.25 per MTok; cached input $0.02/MTok; batch $0.10/$0.625.
Verified evidence
Published benchmark results
Each result keeps its source and measurement date visible. A missing benchmark is not treated as a zero.
| Benchmark | Score | Measured | Source |
|---|---|---|---|
| Artificial Analysis Intelligence Index [high] | 40 | 2026-08-14 | Artificial Analysis · View source |
Best for
- Classification
- Summarisation
- High-volume chat
Watch out
Source receipts
Catalog figures for this model were checked against the following sources.
- OpenAI — GPT-5.4 Mini & Nano (accessed 2026-08-29)
- OpenAI API pricing (gpt-5.4-nano $0.20/$1.25) (accessed 2026-08-29)
Common questions
GPT-5.4 Nano
Answered from the verified figures on this page rather than general guidance.
How much does GPT-5.4 Nano cost per million tokens?
GPT-5.4 Nano is listed at $0.20 per million input tokens and $1.25 per million output tokens at standard rates. Output tokens usually dominate real bills, so weigh the output rate more heavily than the input rate. Standard $0.20/$1.25 per MTok; cached input $0.02/MTok; batch $0.10/$0.625.
What is GPT-5.4 Nano's context window?
GPT-5.4 Nano accepts about 400K tokens of context. That only matters if you routinely send very long documents, large codebases, or multi-turn histories that approach that limit.
What is GPT-5.4 Nano best for?
GPT-5.4 Nano is a budget tier from OpenAI. It suits classification, summarisation, high-volume chat. Smallest tier; not for hard reasoning or coding.