GPT-5.5 Changes How Work Gets Done

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GPT-5.5 Changes How Work Gets Done

🔓 Top CheatSheet of Today

 OpenAI's boldest release yet just landed

OpenAI has released GPT-5.5, codenamed "Spud," just six weeks after GPT-5.4 — positioning it not as a routine model update but as a fundamental shift toward agentic computing. Available now for paid ChatGPT and Codex users, with API access to follow shortly.

The details:

• The model scores 88.7% on SWE-bench and cuts hallucinations by 60% versus GPT-5.4 — with Greg Brockman calling it a "faster, sharper thinker" that handles multi-step tasks autonomously without constant user input.

• GPT-5.5 is positioned primarily as an agent runtime: give it a messy, multi-part task and it plans, uses tools, checks its own work, and keeps going — without being managed step by step.

• Three variants ship: standard, Thinking, and Pro — with API pricing at $5 per million input tokens and $30 per million output, roughly double GPT-5.4's rate but with meaningfully better token efficiency on complex tasks.

• Early enterprise testers reported saving up to 10 hours of work per week, with Bank of New York citing a notable improvement in hallucination resistance for regulated financial use cases.

• OpenAI also confirmed 900 million weekly active ChatGPT users, 50 million subscribers, and 4 million active Codex users — figures clearly aimed at countering the narrative that Anthropic has pulled ahead in enterprise.

Why it matters: Six weeks between flagship model releases is product launch cadence, not research cadence. OpenAI is no longer just iterating — it is racing to lock down the agentic computing category before Anthropic, Google, and Meta can stake a permanent claim. GPT-5.5 is the clearest signal yet that the frontier is no longer about what a model knows. It is about what a model can finish on its own.

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