SpaceXAI releases Grok 4.5, which Elon describes as an ‘Opus-class model’

SpaceXAI releases Grok 4.5, which Elon describes as an ‘Opus-class model’

SpaceXAI dropped Grok 4.5 weeks after going public, pitching it for coding, office work, research, and writing. The company claims twice the token efficiency of other leading models, which would cut usage costs if it holds up. Elon Musk calls it an ‘Opus-class model,’ signaling it aims at Anthropic’s top tier. The post doesn’t disclose pricing, parameter count, or third-party benchmarks, so I’d wait for independent evals before buying the efficiency claim.

Why it matters: First model post-IPO with Musk directly calling it 'Opus-class' — strong H and R, but the post lacks params, pricing, and benchmarks, so the 2x efficiency claim is unverified. Hits featured threshold on narrative weight alone.