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GPT 5 Nano (latest) API price
openai/gpt-5-nano
The cheapest GPT 5 Nano (latest) API is $0.0347/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
$0.0347
per 1M tokens · Cheaper Inference (discount marketplace)
up to $0.05
Output
$0.2776
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 $0.0347/M.
Cost calculator
| Provider | Input $/M | Output $/M | Cached in | Your cost |
|---|---|---|---|---|
| Cheaper Inference (discount marketplace)31% off | 0.035cheapest | 0.278 | 0.0035 | |
| Official - OpenAI | 0.050 | 0.400 | 0.0050 | |
| Batch | 0.025 | 0.200 | 0.0025 | |
| Flex | 0.025 | 0.200 | 0.0025 | |
| OpenRouter (aggregator) | 0.050 | 0.400 | 0.0050 | |
| Batch | 0.025 | 0.200 | 0.0025 | |
| OrcaRouter (aggregator) | 0.050 | 0.400 | - |
1.4× between the cheapest and the dearest of 4 sellers.
Against its tier
- This model$0.3123
- Cheapest · Nemotron 3.5 Lightning$0.145
- Tier median · Qwen 3.8 Omni Flash$0.62
- Dearest · GPT 5.4 Mini (03-17 snapshot)$5.25
#5 of 20 small · cheaper than 79%
Details
- Context window
- 400K400,000 tokens
- Developer
- OpenAI
- Intelligence
- 13.0 est. High
- Sellers
- 41.4× spread
- Cached input
- $0.0035where the source publishes one
- Cheapest at
- Cheaper Inference (discount marketplace)
- Combined
- $0.3123in + out per 1M
- Last checked
- 2026-10-12