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GPT-2 XL


GPT-2 XL is OpenAI's language model. The largest variant of OpenAI's GPT-2, a 1.5B-parameter autoregressive language model for open-ended text generation.
Specifications
Canonical IDopenai-gpt-2-xl
TypeLanguage
StatusActive
CreatorOpenAIOpenAI
Input ModalitiesText
Output ModalitiesText

Capabilities

Input1/5
Text
Image·
Audio·
Video·
PDF·
Output1/5
Text
Image·
Audio·
Video·
Embedding·
Capabilities0/13
Reasoning·
Adaptive Reasoning·
Function Calling·
Parallel Function Calling·
Structured Outputs·
Native JSON Schema·
Web Search·
URL Context·
Computer Use·
Code Execution·
File Search·
Prompt Caching·
Assistant Prefill·

Versions

VersionReleasedContextInput / 1MOutput / 1MStatus
GPT-5.51.1M$5.00$30.00Available
GPT-5.4 Mini1.1M$0.750$4.50Available
GPT-5.4 Nano1.1M$0.200$1.25Available
GPT-5.41.1M$2.50$15.00Available
GPT-5.3 Codex400K$1.75$14.00Available
GPT-5.2 Codex400K$1.75$14.00Available
GPT-5.2410K$1.75$14.00Available
GPT-5.1410K$1.25$10.00Available
GPT-5.1 Codex400K$1.25$10.00Available
GPT-5.1 Codex Mini400K$0.250$2.00Available
GPT-2 XLCurrent

Model IDs