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Tomas Hernando Kofman announced Not Diamond Code as an “intelligent model router”…

2026-08-04 · 17:01 UTC ·@Diptish09 ·0 min read

Brief

Not Diamond Code, announced by Tomas Hernando Kofman, is presented as a model router for long-horizon coding agents that interoperates with gateways like Claude Code and automatically selects the optimal model and reasoning effort per step, claiming 20–65% cost reductions without quality loss. The post frames this amid broader trends—Claude getting smarter, DeepSeek getting cheaper, and rapid model releases—supporting a multi-model rather than single-winner strategy.

Why it matters

Tomas Hernando Kofman announced Not Diamond Code as an “intelligent model router” for long-horizon coding agents that works with any gateway or harness (explicitly including Claude Code).

Key details

  • Not Diamond claims to select the best model and reasoning effort per step, reducing costs by 20–65% without impacting quality.
  • User @Diptish09 notes current industry trends: Claude improving, DeepSeek becoming cheaper, and new models appearing every other week, arguing for building around the best model per task rather than betting on one winner.
Source evidence

Claude gets smarter.

DeepSeek gets cheaper.

New models show up every other week.

I like that Not Diamond isn’t betting on one winner.

Building around the best model for each task feels like the smarter strategy.

Tomas Hernando Kofman (@tomas_hk)

Today we’re announcing Not Diamond Code, the world’s most powerful intelligent model router for long-horizon coding agents.

Not Diamond works with any gateway or harness, including Claude Code, to select the best model and reasoning effort for each step, reducing costs by 20-65% without impacting quality.

Video

— https://nitter.net/tomas_hk/status/2084669945150062619#m