# OpenAI: GPT-5 Nano

openai/gpt-5-nano

[Chat](/content/platform/chat?model=openai/gpt-5-nano/index.html)

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 counterparts, it retains key instruction-following and safety features. It is the successor to GPT-4.1-nano and offers a lightweight option for cost-sensitive or real-time applications.

by [OpenAI](/content/openai/index.html)

Input type  | Output type  | Publish time  
------------|--------------|--------------- 
            |              | 2025-08-07

## Recent activity on GPT-5 Nano

### Tokens processed per day

### Throughput

(tokens/s)

| Providers | Min (tokens/s) | Max (tokens/s) | Avg (tokens/s) |
| --- | --- | --- | --- |
| Azure | 10.45 | 153.25 | 55.79 |
| OpenAI | 109.34 | 109.34 | 109.34 |

### First Token Latency

(ms)

| Providers | Min (ms) | Max (ms) | Avg (ms) |
| --- | --- | --- | --- |
| Azure | 786 | 13906 | 4840.81 |
| OpenAI | 626 | 7160 | 3893.00 |

### Uptime stats for GPT-5 Nano

Uptime stats for GPT-5 Nano across all providers

Uptime

Azure  
OpenAI

( Percent )

Providers for GPT-5 Nano

ZenMux Provider to the best providers that are able to handle your prompt size and parameters, with fallbacks to maximize uptime.

[**OpenAI**](/content/provider/openai/index.html)

Latency

-

Throughput

-

Uptime

-

Recent uptime  
Apr 30, 2026 6:00 PM-

Price

Input  
$ 0.05/ M tokens  
Output  
$ 0.4/ M tokens  
Cache read  
$ 0.005/ M tokens  
Cache write 5m  
-  
Cache write 1h  
-  
Cache write  
-  
Web search  
$ 0.01/ counts  
Image  
-  
Image input  
-  
Image output  
-  
Image cache  
-  
reasoning  
-  
Video  
-  
Audio  
-  
Audio cache read  
-  
Audio input  
-  
Audio & Video  
-  
Image search  
-  
Web search image  
-  
Model limitation

Context  
400.00K  
Max output  
128.00K  
Supported Parameters

max_completion_tokens  
-  
temperature  
-  
top_p  
-  
frequency_penalty  
-  
presence_penalty  
-  
seed  
-  
logit_bias  
-  
logprobs  
-  
top_logprobs  
-  
response_format  
-  
stop  
-  
tools

tool_choice  
parallel_tool_calls  
-

Model Protocol Compatibility

OpenAI Chat Completions  
OpenAI Responses  
OpenAI Embeddings  
-  
Anthropic Messages  
-  
Google Gemini  
-  
Google Imagen  
-  
Google Video  
-  
Status Page  
status page

## Sample code and API for GPT-5 Nano

ZenMux normalizes requests and responses across providers for you.

[Create API Key](/content/platform/pay-as-you-go/index.html)

OpenAI: Python-SDK

OpenAI: cURL

```python
from openai import OpenAI

client = OpenAI(
  base_url="https://zenmux.ai/api/v1",
  api_key="<ZENMUX_API_KEY>",
)

# Chat Completion
completion = client.chat.completions.create(
  model="openai/gpt-5-nano",
  messages=[\
    {\\
      "role": "user",\\
      "content": "What is the meaning of life?"\\
    }\\
  ]
)
print(completion.choices[0].message.content)

# Responses API
responses = client.responses.create(
  model="openai/gpt-5-nano",
  input="What is the meaning of life?"
)
print(responses)
```