Native gpt 5 nano Multimodal Support
Directly process audio and images within the gpt 5 nano api. This gpt feature eliminates the need for separate models.
gpt-5-nano
The GPT 5 Nano API is OpenAI's fastest multimodal model, offering 128k context and native audio processing. Perfect for high-volume orchestration and real-time support, it delivers superior reasoning at just $0.05 per million input tokens.
$ 0.035
$ 0.05
text
$ 0.28
$ 0.4
text
API
Text To Text (Response)
curl --request POST "https://gptproto.com/v1/responses" \
--header "Authorization: Bearer $GPTPROTO_API_KEY" \
--header "Content-Type: application/json" \
--data '{
"model": "gpt-5-nano",
"input": [
{
"role": "user",
"content": [
{
"type": "input_text",
"text": "Write a short poem about artificial intelligence and its impact on humanity."
}
]
}
]
}'Text to Text (Chat)
curl --request POST "https://gptproto.com/v1/chat/completions" \
--header "Authorization: Bearer $GPTPROTO_API_KEY" \
--header "Content-Type: application/json" \
--data '{
"model": "gpt-5-nano",
"messages": [
{
"role": "user",
"content": "Who are you?"
}
],
"stream": false
}'GPT 5 Nano API Key Performance Features
Technical highlights of the gpt 5 nano api that drive efficiency and gpt performance.
Parallel gpt 5 nano api Tool Calls
Trigger up to 10 function calls simultaneously with the gpt 5 nano api. Perfect for complex gpt automation and agents.
Affordable gpt 5 nano api Pricing
Save on gpt costs with $0.05 per 1M input tokens. The gpt 5 nano api offers the best price-to-performance in the gpt family.
Sub-100ms Latency gpt 5 nano api
Experience the fastest gpt response times available. Optimized for real-time gpt interactions and high-speed data streams.
How to Get a gpt-5-nano API Key
Getting a gpt-5-nano API key takes four steps and a few minutes. Create a free GPTProto account, add credits, generate your key, and make your first call — at $0.035 / $0.28 it's a cheaper gpt-5-nano API key than going direct, and one key works across every model on the platform. Full gpt-5-nano Documentation is in the docs.
Sign up
Create your free GPT Proto account to begin. You can set up an organization for your team at any time.
Top up
Your balance can be used across all models on the platform, including gpt-5-nano, giving you the flexibility to experiment and scale as needed.
Generate your API key
In your dashboard, create an API key — you'll need it to authenticate when making requests to gpt-5-nano.
Make your first API call
Use your API key with our sample code to send a request to gpt-5-nano via GPT Proto and see instant AI-powered results.
GPT 5 Nano API Frequently Asked Questions
Find answers about the gpt 5 nano api, including pricing, performance, multimodal features, and how to integrate it into your production apps.
What is the typical latency of the gpt 5 nano api?
The gpt 5 nano api is built for speed, achieving a sub-100ms time-to-first-token. Internal benchmarks show it is 40% faster than the previous gpt 4o-mini tier, making it ideal for gpt-powered real-time applications.
Does gpt 5 nano support native audio processing?
Yes, unlike earlier small gpt models, gpt 5 nano processes audio inputs directly. This gpt 5 nano api capability preserves emotional prosody and ambient context without requiring an extra gpt transcription step.
How much does the gpt 5 nano api cost per token?
Pricing for the gpt 5 nano api is extremely competitive at $0.05 per 1M input tokens and $0.20 per 1M output tokens. This gpt tier also offers 50% discounts for cached gpt inputs and batch processing via our gpt API.
Is the gpt 5 nano api good for structured data?
The gpt 5 nano api is optimized for structured output, outperforming competitors like Llama in complex JSON extraction. It reliably triggers up to 10 parallel tool calls in a single gpt turn without losing accuracy.
What is the context window for gpt 5 nano?
This gpt 5 nano api provides a 128,000 token context window. While it handles large gpt prompts efficiently, it is most accurate when the gpt target information is clearly defined within the conversation flow.
How do I migrate my app to the gpt 5 nano api?
Migrating to the gpt 5 nano api is simple. Just update the model parameter to gpt-5-nano in your gpt code. The gpt 5 nano api is 100% backward compatible with existing gpt SDKs and schemas.
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