OpenAIClosed Weights

GPT-5.1-Instant

openai/gpt-5.1-instant

Best Input Price

$1.10 / 1M

Compact GPT model for low-latency assistance and high-volume workloads

Context Window

128,000 tokens

Reasoning

Supported

Tool Calling

Supported

Released

2025-11-12

Inference Providers (1)

Provider	Model ID	Context	Input / 1M	Output / 1M	Action
Poe	openai/gpt-5.1-instant	128,000	$1.10	$9.00	Docs ↗