GPT-5 Nano pricing & price history
GPT-5 Nano by OpenAI costs $0.05 per 1M input tokens and $0.40 per 1M output tokens, with a 400K token context window.
Price history
No price changes since tracking began on 2026-09-24. We check every 10 minutes.
Cost calculator
Cheaper alternatives to GPT-5 Nano
| Model | Input | Output | Context | Intel. | |
|---|---|---|---|---|---|
 GLM 5.3 Flash Z.ai (Zhipu) | $0.0399 | $0.0784 | 1M | 27.8 | compare |
 DeepSeek V4.1 Flash DeepSeek | $0.022 | $0.40 | 1M | — | compare |
Using a relay or third-party API?
Check for free whether it really serves GPT-5 Nano: output fingerprint, tokenizer and billing evidence, results in 1–3 minutes.
About GPT-5 Nano
GPT-5-Nano is the smallest and fastest variant in the GPT-5 system, optimized for developer tools, rapid interactions, and ultra-low latency environments. While limited in reasoning depth compared to its larger...
FAQ
How much does GPT-5 Nano cost?
GPT-5 Nano by OpenAI costs $0.05 per 1M input tokens and $0.40 per 1M output tokens, with a 400K token context window. A typical request with 2,000 input and 500 output tokens costs about $0.0003.
What is the context window of GPT-5 Nano?
GPT-5 Nano supports up to 400,000 tokens of context and up to 128,000 output tokens per request.
Has GPT-5 Nano’s price changed?
No price changes recorded since ModelBank started tracking it on 2026-09-24.
Is GPT-5 Nano being deprecated?
Yes — GPT-5 Nano is scheduled to be retired on 2026-12-11. Consider migrating to one of the alternatives on this page.
What are cheaper alternatives to GPT-5 Nano?
Cheaper options include GLM 5.3 Flash ($0.0399/$0.0784), DeepSeek V4.1 Flash ($0.022/$0.40).