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OpenAI just dropped GPT 5.4 — and I put it through the hardest test I know inside Codex. 1M context window, 128K output, $2.50 input pricing. But does it actually deliver production-ready code? In this video I run my classic school community prompt and let it go uninterrupted for 20 minutes to see what GPT 5.4 can really do — and whether OpenAI has finally recaptured their spot at the top. ⚡ Sponsor: Lock in founder pricing on HarborSEO.ai before it goes up → https://harborseo.ai $29 for 25 articles | $99 for 100 articles — connect your GitHub and get a static SEO blog today. Sign up to HarborSEO: https://harborseo.ai Work with us: https://incomestreamsurfer.com Try Bright Data: https://brightdata.com/?promo=incomestreamsurfers 0:00 GPT 5.4 just dropped — first impressions 0:46 Sponsor: HarborSEO.ai founder pricing 1:41 Setting up the test in Codex 2:26 Running the classic school community prompt 3:15 First look at the results 4:17 Testing the technical build 5:00 SVGs, tactics & what OpenAI is doing 5:46 Final verdict — is GPT 5.4 worth it? #GPT5.4 #OpenAI #Codex #VibeCoding #AICoding #ChatGPT #AITools #WebDev #CodingWithAI #OpenAICodex