OpenAI restructures Plus plan, moves GPT-5.4 Thinking to credit-based access
What changed
Plus plan: 'Codex agent and Sora video generation' replaced by 'Expanded Codex usage'. GPT-5.3 Instant upgraded to full access on Go. Sora 1 and Sora 2 rows removed from comparison table. GPT-5 Thinking Mini added as new model row.
Context window section restructured: simple '16K/32K/128K' table replaced with detailed GPT Instant context window per chat (27K/54K/128K) and GPT Reasoning context window per chat (256K/400K) rows, plus page-equivalent callouts.
GPT-5.4 Thinking access for Business plan changed from included (Yes) to credit-based (Flexible**), meaning Business users must now purchase credits for GPT-5.4 Thinking access.
Before and after
Mar 23, 2026 vs Apr 1, 2026Plus plan: 'Codex agent and Sora video generation' replaced by 'Expanded Codex usage'. GPT-5.3 Instant upgraded to full access on Go. Sora 1 and Sora 2 rows removed from comparison table. GPT-5 Thinking Mini added as new model row.
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- Week 11, 2026·improvedOpenAI democratizes GPT-5.4 Thinking to Free tier, upgrades Pro models
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