FFree
GptClosed Weights

GPT-5.3 Chat Latest

gpt-5.3-chat-latest

Best Input Price

$1.75 / 1M

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

Context Window

400,000 tokens

Reasoning

Supported

Tool Calling

Supported

Released

2026-03-01

Inference Providers (2)

ProviderModel IDContextInput / 1MOutput / 1MAction
Abacusgpt-5.3-chat-latest400,000$1.75$14.00Docs ↗
OpenAIgpt-5.3-chat-latest128,000$1.75$14.00Docs ↗