Anthropic has officially launched Claude Opus 4.8 - a direct challenger to OpenAI’s GPT-5.5 and Google’s Gemini 3.1 Pro ...

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 ...

Anthropic releases Claude Opus 4.8 with Dynamic Workflow, enabling hundreds of parallel subagents for coding tasks. A 750K-line migration hit 99.8% pass rate.

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 ...

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 ...

Anthropic describes its new Opus 4.5 model as “intelligent, efficient, and the best model in the world for coding, agents, and computer use.” It follows Opus 4.1, which Anthropic released in August.

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 ...