GPT-5.5
by OpenAI · ID gpt-5.5 · Released 2026-04 · Proprietary
-
ELO Score
-
MMLU
-
HumanEval
1M (API) / 400K (Codex)
Context Window
$5.00
Input Price
About GPT-5.5
OpenAI's latest flagship model for real-world coding and professional workflows, with stronger agentic performance and a 1M API context window.
Not sure where to find it? Search query: "GPT-5.5 official"