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CliffCompaction: A Context-Compaction Method to Cut Costs of Coding Agents22/09/26|FleXray: A Generalist Model for Whole-Body X-ray Segmentation22/09/26|Anthropic unveils Claude Opus 5.522/09/26 · Anthropic|Court filings reveal internal admissions on AI content scraping19/09/26|US Military Avoids Close Call After AI-Generated Intelligence Hallucination18/09/26|Study finds gender bias in GPT models is not reduced but reshaped across generations17/09/26 · OpenAI|Google DeepMind adds secure server-side memory to Private AI Compute23/09/26 · Google DeepMind|Google DeepMind adds text-to-speech to Gemini 3.823/09/26 · Google DeepMind|NVIDIA releases Nemotron 3 Diarization for real-time speaker identification23/09/26 · NVIDIA|OpenAI extends its Daybreak cyber program to Ukraine for civilian defense23/09/26 · OpenAI|OpenAI enlists influencers to burnish its public image23/09/26 · OpenAI|Claude Code Reportedly Reads AGENTS.md Only When Telemetry Is Enabled23/09/26 · Anthropic|CliffCompaction: A Context-Compaction Method to Cut Costs of Coding Agents22/09/26|FleXray: A Generalist Model for Whole-Body X-ray Segmentation22/09/26|Anthropic unveils Claude Opus 5.522/09/26 · Anthropic|Court filings reveal internal admissions on AI content scraping19/09/26|US Military Avoids Close Call After AI-Generated Intelligence Hallucination18/09/26|Study finds gender bias in GPT models is not reduced but reshaped across generations17/09/26 · OpenAI|Google DeepMind adds secure server-side memory to Private AI Compute23/09/26 · Google DeepMind|Google DeepMind adds text-to-speech to Gemini 3.823/09/26 · Google DeepMind|NVIDIA releases Nemotron 3 Diarization for real-time speaker identification23/09/26 · NVIDIA|OpenAI extends its Daybreak cyber program to Ukraine for civilian defense23/09/26 · OpenAI|OpenAI enlists influencers to burnish its public image23/09/26 · OpenAI|Claude Code Reportedly Reads AGENTS.md Only When Telemetry Is Enabled23/09/26 · Anthropic|

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Anthropic unveils Claude Opus 5.5

Anthropic has published a page announcing Claude Opus 5.5, the latest iteration of its flagship model, without yet detailing the specific improvements.

September 22, 20262 min readPublished byHacker News

Anthropic has published an official page for Claude Opus 5.5, signaling a new version of its most capable model within the Claude family. The ".5" naming suggests an intermediate update rather than a full generational shift, consistent with common industry practice of refining flagship models between major releases.

Read the original source

https://www.anthropic.com/claude-opus-5-5

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