Best AI for System Design
Here is a collaborative editor architecture. Find what breaks. Also a startup teardown and a training-cost estimate made without search.
3 challenges20 models#1 Claude Haiku 4.5
How System Design rankings are computed
20 models tested across 3 system design challenges. Composite score: 30% Rival Index, 20% task coverage, 20% challenge-scoped duel performance, 15% recency, 15% tier. Deduplicated by product line. Claude Haiku 4.5 leads at 78.1/100. Drawn from Rival's open dataset of 21,000+ human preference votes.
Rival's Pick
#48 Rival IndexAnthropic flagshipToo close to call
Head-to-Head
Full Rankings
20 models#
Model
Coverage
Index
Price
Score
Challenges3
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