GPT-5.4 Unleashed: New Features to Boost AI Performance

product#llm📝 Blog|Analyzed: Mar 18, 2026 03:45
Published: Mar 18, 2026 03:01
1 min read
Zenn GPT

Analysis

OpenAI's GPT-5.4 brings exciting upgrades, including a massive context window and a groundbreaking 'reasoning.effort' parameter, allowing for fine-grained control over inference depth. This update, built on the existing Chat Completions API, promises to revolutionize how developers utilize Generative AI, improving both performance and efficiency.
Reference / Citation
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"GPT-5.4's core improvements include a 1,050,000 token context window, a 5-stage reasoning.effort parameter and a Computer Use API for native desktop operations."
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Zenn GPTMar 18, 2026 03:01
* Cited for critical analysis under Article 32.