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GPT 5.4 has been released... + 1M context window! Here's how to enable in Codex: → 1. ~/.codex/config.toml → 2. model = "gpt-5.4" → 3. model_context_window=1000000 → 4. model_auto_compact_token_limit=9000000 Run codex → 5. /statusline → 6. toggle context-window-size I didn't even realise Codex had a statusline tool!

Chong-U

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76,794 views • 4 months ago •via X (Twitter)

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GPT-5.4 is here. Native computer-use capabilities. Up to 1M tokens of context in Codex and the API. Best-in-class agentic coding for complex tasks. Scalable tool search across larger ecosystems. More efficient reasoning for long, tool-heavy workflows.

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Wait… I’m actually obsessed with Codex + GPT-5.4 🤯 Built a Club Penguin clone in 6 prompts. Then used to make it multiplayer. Didn’t expect this but… OpenAI might've officially converted me to Codex for vibe-coding.

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