SpaceXAI prices Grok 4.5 at 4x discount to Anthropic's Opus 4.7

SpaceXAI released Grok 4.5 on July 8, priced at $2 per million input tokens and $6 per million output tokens. Anthropic's Opus 4.7 costs $5 and $25 respectively. The output-token gap—roughly fourfold—tilts sharply toward agentic workloads that generate long reasoning chains. SpaceXAI claims twice the token efficiency of competing models. Public availability begins July 9, one day before OpenAI's GPT 5.6 launch.