‹ PublicAI Index
The LLM benchmark aggregator.
GPT-5.5 Instant
OpenAI
Strongest in Human preference (#38 of 354), weakest in Agents (#146 of 298). Above par in 2 of 4 scopes. Among the models it meets almost everywhere, it finishes behind Gemini 4 Carbon and Gemini 4 Argon and ahead of GPT-5.2 and O3.
§ 1 · Profile
What it is good at
Bars run from 50 — the average of the models each source lists — so right of the line is above par. The middle column is the gap to whoever leads that scope.
Human preference63.7−5.1#38/3541/1
Human preference63.7−5.1#38/3541/1
Agents49.2−17.1#146/2982/6
Knowledge work48.7−22#106/2082/2
§ 2 · Head to head
What it beats, and what beats it
The same models turn up scope after scope. Counted once: where both were placed, who finished higher. Bars run right for GPT-5.5 Instant, left for the other.
§ 3 · Sources
Where the numbers come from
3 publications, 3 figures. Every one links to the page it was read from.
LMArena Text 1473
GDPval-AA 516
AA-Briefcase 1087
Badge
[](https://publicai.io/model-index/m/gpt-5-5-instant)