GPT-5.4 expands the context window to 1 million tokens; the larger limit supports longer coding and research sessions.
Earlier this week, OpenAI released GPT-5.3 Instant, promising to make ChatGPT less cringe and more natural when using its ...
OpenAI GitHub Copilot has added support for OpenAI’s GPT-5.4 coding model, bringing improved reasoning and support for multi-step tasks. The model is available across several development environments.
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