GPT-5.4 may support over 1 million tokens, allowing it to read books, long documents, or large codebases at once.
It could include an extreme reasoning mode for solving complex problems.
The model may launch around March or April 2026.
OpenAI is reportedly working on releasing a new version of its ChatGPT model. Reports indicate that the new GPT 5.4 model is a complete upgrade from its predecessors. For instance, the new model is reportedly able to process a much larger context window. It can process over a million tokens. This means that the model can read books or long legal documents in a single session. It can also read large code projects in a single session. It is also believed that the model will have an extreme reasoning mode. This means that the model can solve problems using long calculations. Other improvements may include better memory and more consistent performance during long tasks. These changes could make a big difference in scientific research and multi-step reasoning. Read on to find out what to expect and when the GPT 5.4 may launch.
SurveyGPT 5.4: What to expect
Early reports suggest that GPT 5.4 will support an expanded context window exceeding one million tokens. When compared to GPT 5.2, the upcoming model is expected to offer more than double the roughly 400,000 tokens available in the latest GPT 5.2 models. This means it could read and work with entire books, long legal papers, or large code projects in a single go. would help a lot in research, coding, and data-heavy tasks.
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The GPT-5.4 is also said to come with an extreme reasoning mode which will let the AI tool spend more time and computing power thinking through really complex problems. Analysts suggest that the new model could improve scientific research, multi-step reasoning, and tasks that need careful, long chains of thought.
Along with the above-mentioned, the reports have also indicated that the new model can also come with enhancements in memory retention and better sustained performance over extended workflows.
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GPT 5.4: Launch timeline
The company has not officially announced a launch date for the new GPT 5.4 model yet. Leaks and reports in the developing community indicate that it could launch as early as March or April 2026.
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Bhaskar Sharma
Bhaskar is a senior copy editor at Digit India, where he simplifies complex tech topics across iOS, Android, macOS, Windows, and emerging consumer tech. His work has appeared in iGeeksBlog, GuidingTech, and other publications, and he previously served as an assistant editor at TechBloat and TechReloaded. A B.Tech graduate and full-time tech writer, he is known for clear, practical guides and explainers. View Full Profile
