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OpenAI

OpenAI: GPT-5.4

openai/gpt-5.4

GPT-5.4 is OpenAI’s latest frontier model, unifying the Codex and GPT lines into a single system.

Context window: 1,050,000 tokens
Input: text, image, file
Output: text
Pricing: $2.5/M input tokens, $15/M output tokens

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