openai
OpenAI: GPT-4.1 Nano API Pricing
OpenAI: GPT-4.1 Nano costs $0.100 per 1M input tokens and $0.400 per 1M output tokens (cache reads: $0.025). Context window: 1.0M. Prices verified 2026-08-23 Β· source
Input / 1M tokens
$0.100
Output / 1M tokens
$0.400
Context window
1.0M
Max output
33K
What would OpenAI: GPT-4.1 Nano cost you per month?
| Workload | Requests/mo | Avg tokens (in/out) | Est. monthly cost |
|---|---|---|---|
| Light chatbot | 10,000 | 800 / 400 | $2.40 |
| Coding agent | 5,000 | 8,000 / 2,000 | $8.00 |
| RAG pipeline | 30,000 | 4,000 / 500 | $18.00 |
| Doc summarizer | 2,000 | 20,000 / 1,000 | $4.80 |
Estimates use list prices without prompt caching. Caching can cut input cost by up to 90% on repeated context.
About OpenAI: GPT-4.1 Nano
For tasks that demand low latency, GPTβ4.1 nano is the fastest and cheapest model in the GPT-4.1 series. It delivers exceptional performance at a small size with its 1 million...
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Official resources
- OpenAI: GPT-4.1 Nano on OpenRouter β live endpoint, pricing source of record.
- Get an OpenRouter API key β β one key, every model including Nano. Free credits on signup.
- Shred your current bill β paste a CSV and see if switching saves money.