GPT-5.3 Instant (gpt-5.3-chat-latest)
Closed Retired Multimodal
gpt-5-3-chat-latest
API alias for the GPT-5.3 Instant model used in ChatGPT.
Released
Mar 3, 2026
Context window
128K tokens
Max output
16.4K tokens
Parameters
Not disclosed
Input price
Not disclosed
Output price
Not disclosed
Prices are first-party list prices in USD at the standard tier. Last verified Oct 30, 2026.
Pricing
Launch priceMar 3, 2026
$1.75 in / $14.00 out
Current price
No longer sold