Claude Haiku 5.5 scores 1587 on Arena, up 257 points from Haiku 4.5
Original titleClaude Haiku 5.5 (1587 pts) is a +257pt improvement over Haiku 4.5 (1330 pts)!
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Anthropic's Claude Haiku 5.5 reached 1587 points on the Arena WebDev leaderboard, a 257-point gain over Claude Haiku 4.5's 1330. The post says it also improved significantly across all categories.
Source: Arena · x.comPublished · added here