GPT-5.5
OpenAI's GPT-5.5 is a chat model capable of various tasks, including code generation, function calling, and reasoning, with a notable context window of 1,050,000 tokens. It excels at generating text and code, and can also process images and streaming data.
Input
Output
Context
1050K
Max Output
128K
Parameters
-
Technical Specifications
Model TypeChat
Context Window1,050,000 tokens
Max Output Tokens128,000 tokens
ParametersNot available
Release DateApr 22, 2026
Training CutoffDec 1, 2025
Licenseproprietary
Open SourceNo
Input Modalities
ImageText
Output Modalities
Text
Capabilities
Benchmarks
Artificial Analysis
45.8%
HLE
79.0%
AA-LCR
93.5%
GPQA
93.9%
Tau2-Bench
75.9%
IFBench
56.1%
SciCode
39.0%
Tau2 Banking
74.9
Coding
56.3
Intelligence
60.6%
Terminal-Bench Hard
84.3%
Terminal-Bench 2.1
Resources & Links
proprietary, Proprietary - API access only
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Data sourced from official provider APIs and documentation
Last updated: Aug 28, 2026
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