2026-W36 grading run

One public snapshot for the week, assembled as each suite publishes. Grades compare only within the same suite version.

Week 36 of 2026 graded 13 coding agents across 3 published suites. Claude Fable 5.1 leads real-world issues with C+. The biggest move since W35 2026 is Claude Haiku 4.5 on vibe coding, F to D-. Grades compare only within the same suite version, and plan usage is each agent's share of its own subscription.Measured W36 2026

published suites

graded agents

Sep 5, 2026

Suite snapshots

Real-world issues v3

13 graded agents

Lead: Claude Fable 5.1 · C+ · 73.3%

Published through Sep 5, 2026 Spec planning v1

13 graded agents

Lead: Claude Fable 5.1 · C+ · 74.4%

Published through Sep 5, 2026 Vibe coding v1

13 graded agents

Lead: Claude Fable 5.1 · B · 84.5%

Published through Sep 5, 2026

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