Gpt-codexClosed Weights

gpt-5.1-chat-latest

Best Input Price

$1.25 / 1M

Chat-tuned GPT model for conversational assistance, writing, and tool workflows

Context Window

128,000 tokens

Reasoning

Supported

Tool Calling

Supported

Released

2025-11-14

Inference Providers (2)

Provider	Model ID	Context	Input / 1M	Output / 1M	Action
302.AI	gpt-5.1-chat-latest	128,000	$1.25	$10.00	Docs ↗
Helicone	gpt-5.1-chat-latest	128,000	$1.25	$10.00	Docs ↗