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GPT 5 Nano (latest) API price
gpt-5-nano
The cheapest GPT 5 Nano (latest) API is $0.0403/M input at Cheaper Inference (discount marketplace) - all 4 providers compared below, per 1M tokens.
Rolling name - always points to the newest snapshot of this model. The pinned snapshots are priced separately: GPT 5 Nano (08-07 snapshot).
SmallOpenAI400K context4 sellers
Input
$0.0403
per 1M tokens · Cheaper Inference (discount marketplace)
up to $0.05
Output
$0.3223
per 1M tokens · Cheaper Inference (discount marketplace)
up to $0.40
Where to buy it
Cheapest GPT 5 Nano (latest) API providers compared - 4 sellers, from $0.0403/M.
Cost calculator
| Provider | Input $/M | Output $/M | Cached in | Your cost |
|---|---|---|---|---|
| Cheaper Inference (discount marketplace)19% off | 0.040cheapest | 0.322 | 0.0040 | |
| Official - OpenAI | 0.050 | 0.400 | 0.0050 | |
| Batch | 0.025 | 0.200 | 0.0025 | |
| Flex | 0.025 | 0.200 | 0.0025 | |
| OpenRouter (aggregator)stale | 0.050 | 0.400 | 0.0050 | |
| Batchstale | 0.025 | 0.200 | 0.0025 | |
| OrcaRouter (aggregator) | 0.050 | 0.400 | - |
1.2× between the cheapest and the dearest of 4 sellers.
Against its tier
- This model$0.3626
- Cheapest · DeepSeek V4 Flash (0731 snapshot)$0.126
- Tier median · DeepSeek V4.1 Flash$0.60
- Dearest · GPT 5.4 Mini (03-17 snapshot)$5.25
#7 of 19 small · cheaper than 67%
Details
- Context window
- 400K400,000 tokens
- Developer
- OpenAI
- Intelligence
- 13.0est.high
- Sellers
- 41.2× spread
- Cached input
- $0.004where the source publishes one
- Cheapest at
- Cheaper Inference (discount marketplace)
- Combined
- $0.3626in + out per 1M
- Last checked
- 2026-09-17