The AI Foundations presenter starts with published benchmark claims, then gives Claude Sonnet 5 and Opus 4.8 the same request to build and test a small orbital game. The comparison tracks planning, tool use, runtime checks, token consumption and the usability of the final result.
Opus creates a server and validates the game through its own test harness, while Sonnet uses browser automation and iterates on gameplay behavior. Both complete the task, but they spend tokens differently and surface different implementation and testing concerns during the run.
The presenter sees Sonnet 5 as a lower-cost option for recurring automation where Opus-level quality was previously required. The conclusion remains provisional because the demonstration covers one task and the benchmark figures come from model-release material rather than an independent evaluation. Closing community promotion is omitted.
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