QUICK VERDICT — JULY 31, 2026
● Price: Laguna — $0.10/M (20× cheaper than Grok 4.5 at $2/M)
● Terminal-Bench 2.1: Grok 4.5 — 83.3% vs Laguna 70.2%
● Open weights: Laguna only — OpenMDW license, DGX Spark compatible
● Cursor integration: Grok 4.5 only — available on all Cursor plans
● Hallucination: Grok 4.5 — 54% (Artificial Analysis, doubled from 4.3). Laguna — not independently tested yet.
● Privacy incident: Grok Build SSH key upload (patched July 25). Laguna — none.
Laguna S 2.1 for: Maximum cost efficiency — 20× cheaper than Grok 4.5. Self-hostable on a single DGX Spark. No regulatory concerns, no privacy incident history. The default choice for teams starting a new cost-sensitive open-weight coding deployment in July 2026.
Grok 4.5 for: Higher Terminal-Bench performance (83.3% vs 70.2%), Cursor integration (zero setup change if already on Cursor), live X data access, and SuperGrok subscribers who want one plan covering voice + coding. Validate the 54% hallucination rate on your tasks before production deployment.
Last updated July 31, 2026. Related: Laguna S 2.1 full review → · Grok 4.5 full review →
⚖ Our Verdict
Laguna S 2.1 wins on price (20× cheaper — $0.10 vs $2/M), open weights (self-hostable, DGX Spark), and no privacy incident history. Grok 4.5 wins on Terminal-Bench (83.3% vs 70.2%), Cursor integration, and live X data. Grok 4.5 hallucination rate doubled to 54% per Artificial Analysis. Laguna hallucination rate not independently tested yet.