OpenAI
GPT-5.3 Chat Latest
OpenAI's 2026 latest chat model, exceptional in reasoning, code, creative writing, with caching support
Context Length256K tokens
Model TypeLarge Language Model (LLM)
MultimodalSupports text, image, audio input
Pricing & Specs
π° Pricing
Input$1.75 / M tokens
Output$14 / M tokens
Cache Hit$0.175 / M tokens
βοΈ Specs
Context Length256K tokens
Model TypeLarge Language Model (LLM)
MultimodalSupports text, image, audio input
Caching SupportSupports Prompt Caching Acceleration
Knowledge CutoffDecember 2025
API Examples
Python
from openai import OpenAI
client = OpenAI(
base_url="https://api.xairouter.com/v1",
api_key="your-api-key"
)
response = client.chat.completions.create(
model="gpt-5.3-chat",
messages=[
{"role": "user", "content": "Hello!"}
]
)
print(response.choices[0].message.content)cURL
curl https://api.xairouter.com/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer YOUR_API_KEY" \
-d '{
"model": "gpt-5.3-chat",
"messages": [
{"role": "user", "content": "Hello!"}
]
}'