GPT 5.1

Release Date: Nov 13, 2025     Creator: OpenAI

GPT-5.1 is a flexible OpenAI model that lets you tune how much reasoning it uses. Great for balancing speed and depth depending on the task.

Model Specifications
Knowledge Cutoff
Sep 30, 2024
Context (VividLLM)
128,000 Tokens
With a context window of 128,000 tokens, this model can 'remember' and analyze up to 192 pages of data at once. This makes it a top choice for debugging entire codebases and summarizing full-length books.
Context (Native)
400,000 Tokens
Input ModalitiesTextImagePDF
Output TypeText
Max Output8192
Input Weight
1.00 x (Pro)
Output Weight
1.00 x (Pro)
Industry Benchmarks
Intelligence Index (Artificial Analysis) N/A
Coding Index (Artificial Analysis)N/A
Math Index (Artificial Analysis)N/A
Response Speed
Output Tokens per second N/A
Median Time to First Token SecondsN/A
Launch VividLLM Now => :

Benchmarks accessed via : Artificial Analysis

Disclaimer: We are providing Image Upload options to only limit models as of now, so some models which have image upload options might now have that feature on our site.