SpaceXAI releases Grok 4.5, which Elon describes as an ‘Opus-class model’
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- SpaceXAI released Grok 4.5, its first model since going public several weeks ago, marketing it as a general-purpose "workhorse" for coding, office work, research, and writing.
- SpaceXAI claimed Grok 4.5 has "twice greater token efficiency" than other leading models, directly addressing token cost — a growing concern for AI buyers.
- SpaceXAI released benchmarks Wednesday showing Grok competitive with top models though "just short of best-in-class," without independent third-party verification cited in the post.
- Elon Musk described Grok 4.5 as an "Opus-class model" but faster, more token-efficient, and lower cost, with internal assessments placing it "roughly comparable to Opus 4.7."
- Grok 4.5 is priced at $2 per million input tokens and $6 per million output tokens — undercutting Anthropic's Opus 4.7 at $5/$25 and sitting inside OpenAI's tiered $1–$5 / $6–$30 range.
- OpenAI is releasing GPT 5.6 on Thursday, a launch previously limited by the Trump administration over security concerns, which OpenAI calls its "strongest model yet."
Why it matters: If Grok 4.5's token-efficiency claims hold, enterprise buyers face a steep pricing gap against Anthropic's flagship — $2 vs $5 on input and $6 vs $25 on output per million tokens — forcing Opus to defend a premium on capability rather than cost. Anthropic's per-token economics look exposed unless Opus delivers proportionally better output, and the back-to-back Grok-then-GPT-5.6 cadence compresses the competitive window to 48 hours.
