Claude's 1M Context Window Goes GA: Pricing, Benchmarks, and Practical Use Cases

Anthropic just made their entire 1M token context window generally available on Claude Opus 4.6 and Sonnet 4.6 - and they did it without charging a premium. No special pricing tier. No beta header. No asterisks. That's not a typo. A 900,000-token request costs the same per-token rate as a 9,000-token one. If you've been working around context window limits - chunking documents, summarizing intermediate results, losing critical details to compaction - this changes your workflow. Not in a vague "AI is getting better" way. In a "you can now feed your entire codebase into a single prompt" way.