# GPT-5.5

Type: Product

Source: AI Intelligence Brief — https://getaibrief.com/entity/gpt-55-product
Canonical HTML page: https://getaibrief.com/entity/gpt-55-product

## Timeline

- **2026-07-01**: Claude Fable 5 restored globally; Mythos 5 partially restored — After 19 days, Anthropic deploys a new safety classifier and the industry jailbreak framework, winning approval. Claude Fable 5 returns worldwide, while Mythos 5 is made available only to select organizations.
- **2026-06-12**: Amazon reports jailbreak; Commerce issues directive — Amazon engineers report a jailbreak technique on Claude Fable 5 to the U.S. Commerce Department, which orders Anthropic to block foreign national access. Anthropic globally shuts down Fable 5 and Mythos 5.

## Recent coverage (3 stories)

### Gemini 3.6 Flash Cuts Token Costs by 17% but Pro Model Still Missing
2026-07-21 19:10:22 · Sentiment: Neutral · Impact: 7/10 · Sources: 2

Google DeepMind ships three new Gemini Flash models focusing on efficiency, cost reduction, and cybersecurity specialization, while the long-awaited 3.5 Pro remains delayed amid fierce frontier model competition from OpenAI and Anthropic.
Full story: https://getaibrief.com/story/google-gemini-3-6-flash-pro-delay

### All Major AI Models Can Do It: Anthropic’s 19-Day Ban Reveals Jailbreak Parity Across GPT-5.5, Kimi, and Claude
2026-07-04 02:17:38 · Sentiment: Positive · Impact: 8/10 · Sources: 3

Anthropic's testing showed that the jailbreak technique flagged by Amazon works across OpenAI’s GPT-5.5, China’s Kimi K2.7, and its own older models, raising questions about whether such capability is unique or universal — and how a new classifier aims to block it.
Full story: https://getaibrief.com/story/ai-models-jailbreak-parity-anthropic-classifier

### 80% of OpenAI’s GPT-5.5 Answers Leaned Left in Political Bias Test
2026-06-28 08:40:35 · Sentiment: Negative · Impact: 6/10 · Sources: 10

A Washington Post investigation exposes significant left-wing political bias in leading AI models, with OpenAI's GPT-5.5 showing an 80% left-leaning response rate. Google's Gemini demonstrates over 90% balanced answers, highlighting feasible neutrality in AI systems. This raises urgent questions for AI developers regarding training data, value alignment, and user trust.
Full story: https://getaibrief.com/story/gpt-55-80-percent-left-bias-political-test

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