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GPT-5.5 is out but not yet in the OpenAI API - but in the ongoing battle with An

BACKGROUND
1 SIGNALFIRST DETECTED 23 April 2026
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How the story developed
Other feeds and industry voices
5 May
OpenAI releases GPT-5.5 Instant, a new default model for ChatGPT

The company said the model reduces hallucination in sensitive areas such as law, medicine, and finance, while maintaining the low latency of its predecessor.

REPORT · WHO · TechCrunch AIOPEN STORY
24 Apr
OpenAI releases GPT-5.5 and GPT-5.5 Pro in the API

<a href="https://news.ycombinator.com/item?id=47894000">Comments</a>

REPORT · WHAT · Hacker News Best (RSS)OPEN STORY
3 Oct
OpenAI publishes a model guide for the GPT-6 family covering model choice, reasoning effort, and tool use

<table> <tr><td> <a href="https://www.reddit.com/r/OpenAI/comments/1wwq6yn/openai_publishes_a_model_guide_for_the_gpt6/"> <img alt="OpenAI publishes a model guide for the GPT-6

OPINION · WHAT · OpenAIOPEN STORY
16 Oct
OpenAI adds parallel agents to GPT-6 Pro in ChatGPT

<table> <tr><td> <a href="https://www.reddit.com/r/OpenAI/comments/1x7qhdw/openai_adds_parallel_agents_to_gpt6_pro_in_chatgpt/"> <img alt="OpenAI adds parallel agents to GPT-6 Pro

OPINION · WHAT · OpenAIOPEN STORY
23 Apr
OpenAI releases GPT-5.5, bringing company one step closer to an AI ‘super app’

OpenAI says its latest model offers increased capabilities across a broad variety of categories.

REPORT · WHO · TechCrunch AIOPEN STORY
7 Aug
OpenAI puts the brakes on a new model because it&#8217;s supposedly too powerful

OpenAI says it is pausing "internal activities" around an in-development AI model, Astra, because it doesn't yet meet new security standards the company is putting in place. The

REPORT · WHO · The Verge TechOPEN STORY
14 Apr
OpenAI says its safeguards “sufficiently reduce cyber risk" for now, while GPT-5.4-Cyber is its first cybersecurity-focused model. www.wired.com/story/in-the...

OpenAI says its safeguards “sufficiently reduce cyber risk" for now, while GPT-5.4-Cyber is its first cybersecurity-focused model. www.wired.com/story/in-the...

OPINION · WHO · WiredOPEN STORY
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