product · May 16, 2026
Cosine Releases Lumen Outpost Coding Model with 53.9% Niche-Bench Pass Rate
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Cosine released the Lumen Outpost coding model on May 13, 2026. Lumen Outpost achieved a 53.9% pass rate on Niche-Bench across 13 languages, outperforming base model Kimi K2.6 by 11.6 percentage points in Pass@3 and leading in 9 languages including Fortran at 63.2%. The model posted a 25.4% aggregate score on Slop-Bench for code quality and 96.3% action alignment on Vibe-Bench while delivering the lowest cost per successful task at $7.90. Lumen Outpost techniques form the foundation for the upcoming Lumen Sovereign model built with UK Government GPU support.
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