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GPT-5.1

Iterative improvement on GPT-5 with enhanced reasoning and tool support.

gpt-5.1
STABLEGet StartedView uptime
400,000 context
Starting at $1.00/M (20% off) input tokens
Starting at $8.00/M (20% off) output tokens
Streaming
Vision
Tools
Reasoning
JSON Output

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All Providers for GPT-5.1

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

OpenAI
Context: 400k10% off
Input
$1.25$1.125
10% off
/M tokens
Cached
$0.125$0.1125
10% off
/M tokens
Output
$10$9
10% off
/M tokens
+ $0.010$0.009 per search
Get Started
Azure
Context: 400k20% off
Input
$1.25$1
20% off
/M tokens
Cached
$0.125$0.1
20% off
/M tokens
Output
$10$8
20% off
/M tokens
Get Started