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GPT-5.4 (max)
OpenAI's frontier model configured with maximum reasoning effort for the hardest professional and agentic tasks.
Model Specifications
Context window
1,050,000 tokens
Max output
128,000 tokens
Knowledge cutoff
August 2025
Multipart messages
Yes
Vision capabilities
Yes
Default Parameters
Temperature
1.0
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GPT-5.4 Frontier Vision
OpenAI's frontier model for complex professional work. Features 1.05M context window, 128k output tokens, and reasoning token support. Reasoning.effort supports: none (default), low, medium, high and xhigh.
Context: 1,050,000
Output: 128,000
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OpenAI's frontier model configured with high reasoning effort for complex professional tasks.
Context: 1,050,000
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OpenAI's flagship model for coding and agentic tasks across industries. Features 400k context window and multimodal output capabilities.
Context: 400,000
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