GPT-5 nano
DeprecatedAn OpenAI model with a 400K-token context window, image input and tool calling. On the OpenAI API since August 7, 2025, now deprecated.
Access details: OpenAI API
An alias. The provider can point it at a newer version.
gpt-5-nanoUpdated Sep 23, 2026
Capabilities & limits
- Context window
- 400K
- Maximum output
- 128K
- Image input
- Supported
- Tool calling
- Supported
- Structured output
- Supported
Pricing
USD / 1M tokens- Input
- $0.05
- Output
- $0.40
Standard rates per million tokens. Discounts and long-context rates, where offered, are on OpenAI's pricing page.
Full rate card 3 rates
All prices in USD.
Standard input
$0.05 per 1M tokensStandard output
$0.40 per 1M tokensCached input
$0.005 per 1M tokensOther tiers per 1M tokens (short context): Batch: $0.025 input / $0.2 output / $0.0025 cached; Flex: $0.025 input / $0.2 output / $0.0025 cached.
Price history
Sep 23, 2026
Input $0.05 per million tokens
Sep 23, 2026
Output $0.40 per million tokens
Technical details
- Parameters
- Not published
- Active parameters
- Not published
- Architecture
- Not published
- Training / knowledge cutoff
- May 31, 2024
- Input modalities
- Text, image
- Output modalities
- Text
From OpenAI
Official announcement ↗Release & lifecycle
- First available
- Aug 7, 2025
- deprecated
- Jun 11, 2026