Input Price
$0.05
per 1M tokens
Output Price
$0.4
per 1M tokens
Context Window
128K
tokens (8.192K max output)
Specifications
Release Date2025-08-07
Category⚡ Efficient
Context Window128,000 tokens
Max Output8,192 tokens
Capabilities
text
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✍️
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Monthly Cost Estimates
| Usage Level | Daily Tokens | Daily | Monthly | Yearly |
|---|---|---|---|---|
| Light~50 requests/day | 100K in / 20K out | $0.01 | $0.39 | $5 |
| Medium~200 requests/day | 500K in / 100K out | $0.07 | $1.95 | $24 |
| Heavy~1K requests/day | 2,000K in / 500K out | $0.30 | $9.00 | $110 |
| Enterprise~5K requests/day | 10,000K in / 2,000K out | $1.30 | $39.00 | $475 |
Cost Calculator
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Frequently Asked Questions
How much does GPT-5 nano API cost per million tokens?▼
GPT-5 nano costs $0.05 per million input tokens and $0.4 per million output tokens as of 2026. These are the standard API rates from OpenAI.
What is the GPT-5 nano context window?▼
GPT-5 nano supports a 128K context window (128,000 tokens), which means you can process up to 128K tokens in a single API call.
How much does GPT-5 nano cost per month?▼
At medium usage (~200 requests/day with 500K input and 100K output tokens/day), GPT-5 nano costs approximately $1.95/month. Light usage runs about $0.39/month, and heavy usage (~1K requests/day) around $9.00/month.
Is there a cheaper alternative to GPT-5 nano?▼
Yes — Gemini Embedding 2 by Google is a cheaper option at $0.2/M input tokens vs $0.05/M for GPT-5 nano. Other budget alternatives include models in the efficient tier.
Is GPT-5 nano good for ai chatbot?▼
GPT-5 nano is a efficient model with support for text. For ai chatbot, it offers 128K context and costs $0.05/M input tokens — a budget-friendly choice for this use case.
GPT-5 nano Comparisons
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