GPT-5 Nano
OpenAIUpdated June 2026. GPT-5 Nano by OpenAI: $0.05/M cache-miss input, $0.4/M output tokens. Cached input: $0.005/M. 400K context, 128K max output. Vision & Function Calling. Free calculator + compare 40+ models.
Input Price
$0.05
cache miss / 1M tokens
Cached Input
$0.005
per 1M tokens
Output Price
$0.4
per 1M tokens
Context Window
400K
tokens
Specifications
| Provider | OpenAI |
| Model ID | gpt-5-nano |
| Input Price | $0.05 / 1M cache-miss tokens |
| Cached Input Price | $0.005 / 1M tokens |
| Output Price | $0.4 / 1M tokens |
| Context Window | 400K tokens |
| Max Output | 128K tokens |
| Capabilities | textvisionfunction_callingstructured_output |
| Release Date | 2026-03 |
| Pricing Source | Official OpenAI pricing |
| Price Verified | 2026-06-14 · Pricing guides were refreshed against OpenAI official pricing/model docs. |
Monthly Cost Estimates
Estimated monthly costs based on different daily usage levels (assuming 50% input / 50% output split). Input estimates use cache-miss pricing, so cache-heavy workloads can be lower.
| Daily Tokens | Monthly Cost | Annual Cost |
|---|---|---|
| 10K | $0.07 | $0.81 |
| 50K | $0.34 | $4.05 |
| 100K | $0.67 | $8.10 |
| 500K | $3.38 | $40.50 |
| 1.0M | $6.75 | $81.00 |
About GPT-5 Nano
GPT-5 Nano is a large language model by OpenAI. It features a 400K token context window with up to 128K tokens of output per request. The model supports 4 capabilities: text, vision, function_calling, structured_output.
At $0.05 per million cache-miss input tokens and $0.4 per million output tokens, GPT-5 Nano is positioned as a cost-effective option in the OpenAI lineup. Repeated prefix input can be charged at $0.005 per million cached tokens. Use our Token Counter to estimate how many tokens your prompts use, and our Pricing Calculator to compare costs across all models.
GPT-5 Nano Key Details
- Pricing: $0.05/M cache-miss input tokens, $0.005/M cached input tokens, $0.4/M output tokens
- Context window: 400K tokens — suitable for large documents and codebases
- Max output: 128K tokens per response
- Capabilities: text, vision, function_calling, structured_output
- Released: 2026-03
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FAQ
How much does GPT-5 Nano cost?
GPT-5 Nano costs $0.05 per million cache-miss input tokens and $0.4 per million output tokens. Cached input costs $0.005 per million tokens. For a typical workload of 100K input tokens/day and 50K output tokens/day, expect approximately $0.75/month before cache-hit savings.
What is GPT-5 Nano's context window?
GPT-5 Nano supports a context window of 400K tokens. This means your combined input prompt and output response can be up to 400K tokens. The maximum output per response is 128K tokens.
Is GPT-5 Nano good for my use case?
GPT-5 Nano supports text, vision, function_calling, structured_output. As a budget-friendly model, it works well for high-volume tasks like classification, summarization, and simple generation. Use our Pricing Calculator to compare with alternatives.