Claude Opus 5 system card shows gains on RiemannBench, Chartography and GDP.pdf
echen · x · 2026-07-25
- Claude’s latest system card highlights three evals: RiemannBench, Chartography, and GDP.pdf.
- The chart shows Opus 5 outperforming earlier Claude models across these reasoning/analysis tasks, especially when tools are enabled.
- The post frames it as a tongue-in-cheek progression from proving the Riemann hypothesis to uncovering truth in data to getting through page 2 of a PDF.
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