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Simon Willison Emerging AI Innovations Apr 23

A pelican for GPT-5.5 via the semi-official Codex backdoor API

★★★★ significance 4/5

OpenAI has released GPT-5.5 for ChatGPT subscribers and the Codex platform, though API access remains temporarily unavailable. The release highlights the ongoing tension between subscription-based model access and direct API usage for agentic workflows.

Why it matters Delayed API access highlights the growing friction between rapid consumer deployment and the rigorous safety protocols required for enterprise-grade agentic workflows.
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Entities mentioned

Anthropic OpenAI

Tags

#openai #gpt-5.5 #llm release #api #chatgpt

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