Claude Opus 5.5 Explained — What Actually Changed?

Original author：DGeekChick

Original source：https://www.youtube.com/embed/5tbNNfzXa8s

Claude Opus 5.5 is here — but what actually changed? In this video, we break down Anthropic’s Claude Opus 5.5 beyond the headline benchmarks. We’ll look at its 1M-token context window, adaptive thinking, agentic coding capabilities, efficiency improvements, API pricing, computer use, and what developers should know before migrating from Opus 5. We’ll also look at why benchmark scores don’t necessarily represent your real-world workload — and why bigger models don’t automatically mean better models for every task. Topics covered: • Claude Opus 5.5 explained • 1M-token context window • Adaptive thinking and reasoning effort • Agentic coding • Long-running AI agents • Tool use and computer use • Benchmark vs real-world performance • Token efficiency and API cost • Opus 5 vs Opus 5.5 migration • AI model selection and trade-offs The key takeaway: follow the workload, not the release hype. #Claude #ClaudeOpus55 #Anthropic #artificialintelligence #ai #AIAgents #AgenticAI #AICoding #SoftwareEngineering #LLM #DGeekChick