Claude Haiku 5.5 jumps 257 points to 1587 on WebDev Arena leaderboard
arena · x · 2026-10-09
LMArena's WebDev Arena update: Claude Haiku 5.5 scores 1587, a +257-point jump over Haiku 4.5's 1330, improving across all categories. The overall leaderboard is topped by claude-opus-5.5-max (2294), followed by gpt-6-astra-max (1786) and claude-sonnet-5.5-xhigh (1774). Xiaomi's mimo-v2.6-flash offers strong value at 1637 pts for $0.14/M.
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