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GPT-5.3 Chat

GPT-5.3 Chat delivers smoother conversations with better accuracy and fewer unnecessary refusals.

gpt-5.3-chat-latest
STABLEGet StartedView uptime
128,000 context
Starting at $1.57/M (10% off) input tokens
Starting at $12.60/M (10% off) output tokens
Streaming
Vision
Tools
Reasoning

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All Providers for GPT-5.3 Chat

LLM Gateway routes requests to the best providers that are able to handle your prompt size and parameters.

OpenAI
Context: 128k10% off
Input
$1.75$1.575
/M tokens
Cached
$0.175$0.1575
/M tokens
Output
$14$12.6
/M tokens
+ $0.010 per search
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Azure
Context: 128k
Input
$1.75
/M tokens
Cached
$0.175
/M tokens
Output
$14
/M tokens
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