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GPT-5.5 Instant (May 2026)

Closed

GPT-5.5 Instant (May 2026) is an AI model from OpenAI.

Publisher
OpenAI
Family
GPT
Input
Output
Released
5 May 2026

Cite

Notes

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Attribution

Benchmark scores
AA
Attribution policy →
Input
$5
/1M tok
Output
$30
/1M tok
Blended
$11.25
#449/ 461/1M · 3:1
Speed
0
#115/ 461tok/s

Price & speed via Artificial Analysis · ranked across tracked models

Reported on 6 evals across 4 domains - best 84.6% on GPQA Diamond · #64 of 497

Reported eval scores

6