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Models/claude-haiku-5-5

Claude Haiku 5.5

6th on Convex No Guidelines at 74.55%, two runs, $0.16 a run. No Guidelines + Web is 79.02%.

Anthropic · Proprietary · Fetched 2026-10-10

LMArena WebDev
1587
#30 / 142 · ±20
Convex Evals
74.55%
#6 / 13

Benchmark scores

Boards older than 90 days are not counted as recommendations
BenchmarkSettingScoreRankCostAs of
LMArena WebDevhigh1587±20#30—2026-10-08
Convex Evals2 runs74.55#6$0.162026-10-08
SWE-bench Verified—This board has stopped updating——2026-02-26
Aider Polyglot—This board has stopped updating——2025-11-20

Use it or not

Why
  • On the Convex baseline its cost is among the lowest at the front.
When not
  • 74.55% is behind Opus 5.5 at 90.18%. With Guidelines is unverified, so do not invent an uplift.

Appears in these scenarios

Collected from scenario boards
Build a Web frontend#30WebDev 1587

Peers