GPT-5.4

GPT-5.4
DeveloperOpenAI
Initial releaseMarch 5, 2026 (2026-03-05)
PredecessorGPT-5.2
LicenseProprietary
Websiteopenai.com/index/introducing-gpt-5-4/

GPT-5.4 (Generative Pre-trained Transformer 5.4) is a large language model (LLM) released by OpenAI on March 5, 2026.

OpenAI released the model in two primary variants: GPT-5.4 Thinking and GPT-5.4 Pro. Neither is available to free-tier users.

In technical benchmarks, OpenAI reported a 33% reduction in factual errors compared to GPT-5.2. Performance improvements were focused on professional workflows.

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