# GPT-5.5

Type: Product

Source: GetYourBrief — https://getyourbrief.com/entity/gpt-55-product
Canonical HTML page: https://getyourbrief.com/entity/gpt-55-product

## Timeline

- **2026-07-08**: SpaceXAI releases Grok 4.5 — First publicly available model since the SpaceX‑xAI merger; targets coders and knowledge workers with aggressive pricing.
- **2026-07-08**: OpenAI launches GPT‑5.6 Sol — Hours after Grok 4.5’s announcement, OpenAI debuts its new top‑tier model at $5/$30 per million tokens, heightening same‑day competition.
- **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.
- **2026-07-01**: 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.
- **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 (10 stories, network-wide)

### AI Cuts Exploit Window to 1 Day; 10K+ Zero-Days Found in 1 Month
2026-08-03 08:17:03 · Sector: cyber · Sentiment: Negative · Impact: 7/10 · Sources: 2

A J.P. Morgan report reveals that AI has reduced the vulnerability exploitation window to a single day, with advanced models uncovering over 10,000 new zero-day flaws in one month. Paired with a 60% patching failure rate and a 4.8M talent shortage, the findings demand an urgent shift to AI-driven defense and continuous patching.
Full story: https://getcyberbrief.com/story/ai-exploit-window-1-day-10000-zero-days-jpmorgan

### Gemini 3.6 Flash Cuts Token Costs by 17% but Pro Model Still Missing
2026-07-21 19:10:22 · Sector: ai · 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

### Moonshot’s 2.8T Parameter Kimi K3 Shakes AI Race: Startup Implications
2026-07-17 21:13:54 · Sector: startups · Sentiment: Positive · Impact: 7/10 · Sources: 2

Beijing startup Moonshot AI’s massive open-source Kimi K3 model is outperforming US flagships on coding, triggering a market shock reminiscent of DeepSeek. For AI startups, this signals intensifying competition, the commoditization of foundation models, and a shift toward application-layer value.
Full story: https://getstartupbrief.com/story/moonshot-kimi-k3-startup-impact-2026

### 2.8T-Parameter Open Model Ranks #1 on Arena.ai, Threatens SaaS AI Lock-in
2026-07-17 08:08:43 · Sector: saas · Sentiment: Positive · Impact: 9/10 · Sources: 5

Moonshot AI’s Kimi K3, an open-weight model with 2.8 trillion parameters, matched the best US proprietary systems and topped Arena.ai’s web-interface benchmark. For SaaS vendors embedding AI, this means a viable alternative to expensive closed APIs—potentially slashing integration costs while enabling deep customization on private infrastructure.
Full story: https://getsaasbrief.com/story/moonshot-kimi-k3-saas-open-weight-disruption

### Moonshot’s 2.8T-Param Model Challenges US AI Startup Dominance
2026-07-17 03:31:26 · Sector: startups · Sentiment: Positive · Impact: 9/10 · Sources: 2

Moonshot AI’s Kimi K3, a 2.8-trillion-parameter open-weight model, competes head-to-head with US frontier models at lower cost, intensifying the global AI startup race and prompting a re-evaluation of venture capital strategies.
Full story: https://getstartupbrief.com/story/moonshot-ai-kimi-k3-startup-competition

### Moonshot’s 2.8T Kimi K3 Outperforms GPT-5.5, Narrows US AI Lead
2026-07-17 03:31:13 · Sector: ai · Sentiment: Positive · Impact: 9/10 · Sources: 2

Moonshot AI’s Kimi K3, a 2.8 trillion-parameter open-weight model with 1M-token context, beats OpenAI’s GPT-5.5 in GPU optimization and ranks second behind Fable 5, signaling China’s accelerating technical prowess.
Full story: https://getaibrief.com/story/moonshot-ai-kimi-k3-technical-benchmark

### Grok 4.5 Scores 64.7% on SWE Bench Pro, Undercuts Rivals at $2/1M Tokens
2026-07-09 00:03:55 · Sector: ai · Sentiment: Positive · Impact: 7/10 · Sources: 2

SpaceXAI released Grok 4.5, a coding-focused model priced at just $2/1M input tokens, significantly cheaper than rivals. Musk himself concedes it is “roughly comparable to Opus 4.7”—one generation behind Anthropic’s latest flagship—but emphasizes speed and utility for internal engineers.
Full story: https://getaibrief.com/story/grok-4-5-64-percent-swe-bench-pro

### 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 · Sector: ai · 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

### Investor Amazon’s Report Shuts Down Anthropic for 19 Days — Lessons for AI Startups
2026-07-04 02:16:55 · Sector: startups · Sentiment: Positive · Impact: 8/10 · Sources: 3

Anthropic’s largest investor Amazon bypassed the company to report a jailbreak to regulators, triggering a 19-day global shutdown of its flagship AI models — highlighting governance risks for high-value AI startups.
Full story: https://getstartupbrief.com/story/anthropic-19-day-shutdown-investor-dynamics

### 80% of OpenAI’s GPT-5.5 Answers Leaned Left in Political Bias Test
2026-06-28 08:40:35 · Sector: ai · 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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This page is a machine-readable summary. Sentiment measures the directional read of each development for this entity, not the tone of the reporting; impact weights consequence, not syndication reach. See https://getyourbrief.com/guides/methodology for the full editorial methodology.