OpenAI: GPT-5.3 Chat

flagship

OpenAI · released 2026-02-01 · text+image+file->text

currently routing · 4.2k rpm

128K tokens

Context

$1.75 / 1M

Input

$14.00 / 1M

Output

— t/s

Speed

proprietary

License

/ ABOUT

GPT-5.3 Chat is a conversational model from the GPT-5.3 generation with improved dialogue quality.

Providers for OpenAI: GPT-5.3 Chat

1 routes · sorted by uptime

ClosedRouter routes requests to the providers best able to handle your prompt size and parameters, with automatic fallbacks to maximize uptime.

Provider

Context

Quant

Uptime · 30d

128K

bf16

0.00%