OpenAIClosed Weights

GPT-5-Chat

openai/gpt-5-chat

Best Input Price

$1.10 / 1M

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

Context Window

128,000 tokens

Reasoning

Tool Calling

Supported

Released

2025-08-07

Inference Providers (1)

Provider	Model ID	Context	Input / 1M	Output / 1M	Action
Poe	openai/gpt-5-chat	128,000	$1.10	$9.00	Docs ↗