Claude Opus 4.6: 1M Token Context, Adaptive Thinking, and Effort Controls for Developers
Anthropic's Claude Opus 4.6 (released February 5, 2026) introduces a 1M token context window in beta, automatic context compaction up to 10M total tokens, and four-level effort controls so developers can trade off speed versus intelligence per request. It's available immediately via API on claude.ai, AWS Bedrock, and Google Cloud Vertex AI at $5/$25 per million tokens standard. This release is specifically optimized for large-codebase work, multi-step agentic pipelines, and enterprise document-heavy workflows like legal and financial analysis.