Claude: Speed up responses with fast mode

Anthropic released a faster version of Claude Opus 4.6 that operates 2.5 times faster, accessible through a /fast command in Claude Code, but costs 6 times more than the standard version ($30/million input tokens and $150/million output tokens versus the normal $5/million and $25/million). The company is offering a 50% discount until February 16th, reducing the cost multiplier to 3x during that period, and users can also extend the context window (the amount of text the AI can process at once) to 1 million tokens for additional charges.