GPT-4.1 Nano
OpenAI · Small
Cheapest OpenAI model — designed for classification, routing, and high-throughput extraction.
- Strengths
- OpenAI's cheapest model, tuned for raw throughput.
- Best for
- Classification, routing and high-throughput extraction.
- Limitations
- Minimal reasoning ability; strictly for simple, well-scoped tasks.
Input / 1M
$0.1
Output / 1M
$0.4
Cached input / 1M
$0.025
Context window
1M
Where it sits
2nd-cheapest small model
by blended $/Mtok among 5 listed small models
75% below the small median
blended $/Mtok across 5 small models
Output costs 4× input
$0.1 in / $0.4 out per 1M
Cached input saves 75%
$0.025 vs $0.1 per 1M fresh
Held flat since launch (Apr 2025)
no blended price change recorded
Computed live from current prices and this model's history — not hand-written, so it stays accurate as prices move.
Price history
Only one price on record so far — the history chart appears once a price changes.
Snapshots
| Effective | Input | Output | Cached in | Note | Source |
|---|---|---|---|---|---|
| 14 Apr 2025 | $0.1 | $0.4 | $0.025 | openai.com/api/pricing |