1M context is now generally available for Opus 4.6 and Sonnet 4.6

Anthropic has made 1M context (the ability to process 1 million tokens, which are small units of text that AI models break language into) generally available for its Opus 4.6 and Sonnet 4.6 models at standard pricing, with no additional charge for using the full window. This differs from competitors like OpenAI and Gemini, which charge premium rates when token usage exceeds certain thresholds (200,000 tokens for Gemini 3.1 Pro and 272,000 for GPT-5.4).