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Shiri (@shiri_shh) likens the 2010 shift to programmatic RTB—when every ad…

2026-08-04 · 18:15 UTC ·@shiri_shh ·0 min read

Brief

Not Diamond Code is an intelligent model router for long-horizon coding agents announced 2026-08-04. The cache-aware system, said to work inside Claude Code or with any gateway/harness, automatically routes each agent step to the ‘best’ model and reasoning effort, claiming 20%+ (and up to 20–65%) cost reductions without quality loss.

Why it matters

Shiri (@shiri_shh) likens the 2010 shift to programmatic RTB—when every ad impression was routed to the best bid automatically—to today's 'inference' moment, claiming real-time routing of model calls is becoming standard (post dated 2026-08-04).

Key details

  • Not Diamond / Not Diamond Code (announced 2026-08-04 by Tomas Hernando Kofman @tomas_hk) is presented as an intelligent, cache-aware model router for long-horizon coding agents that routes each agent step to the right model and reasoning effort; it claims compatibility with any gateway/harness (including Claude Code) and cost reductions of 20%+ (per @shiri_shh) or 20–65% without impacting quality (per Tomas).
Source evidence

In 2010, ads stopped being bought by hand.

every impression started routing to the best bid in milliseconds automatically.

Inference is having that exact moment rn

@notdiamond_ai routes each step of a coding agent to the right model, cache-aware, 20%+ cheaper, inside Claude Code.

The routing layer always wins in the end.

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