Opus 4.5 failed half my coding tests, despite bold claims File handling glitches made basic plugin testing nearly impossible Two tests passed, but reliability issues still dominate the story I've got ...

Anthropic today announced the launch of Claude Opus 4.5, which it says is the "best model in the world for coding, agents, and computer use." It's improved over prior models for everyday tasks like ...

Anthropic is out with a new model called Claude Opus 4.6, an upgrade to its top-of-the-line Opus 4.5 model that launched in November. The new release could add new capabilities to Anthropic’s Claude ...

GitHub has added Anthropic's Claude Opus 4.5 to the set of models available in GitHub Copilot Chat, and the model is now selectable directly inside Microsoft developers' primary tools: Visual Studio ...

Claude Opus 4.8 is Anthropic’s new flagship AI model, released May 28, 2026, and the company says it is about four times less likely than Opus 4.7 to leave flaws in its own code unflagged. Pricing ...

Microsoft has introduced Anthropic's Claude Opus 4.5 model in public preview in Microsoft Foundry, while also making it available through GitHub Copilot paid plans and Microsoft Copilot Studio. The ...

After launching Claude Sonnet 4.5 (late September) and Claude Haiku 4.5 (mid-October), Anthropic on Monday unveiled a new frontier AI model, Claude Opus 4.5, which features state-of-the-art (SOTA) ...

Anthropic released Claude Opus 4 and Claude Sonnet 4 today, dramatically raising the bar for what AI can accomplish without human intervention. The company's flagship Opus 4 model maintained focus on ...

OpenAI dropped GPT-5.5 on April 23, 2026. Within hours I paused an ongoing Opus 4.7 benchmark, swapped the API keys, and ran the exact same methodology on the new model. After 24 hours of continuous ...