--- title: "claude-code \u00b7 Sonnet 5 | Pelican benchmark" url: https://evaljetty.com/pelicans/runs/agents/v2-claude-sonnet5.html description: "claude-code \u00b7 Sonnet 5 (anthropic/claude-sonnet-5) drawing a pelican riding a bicycle: every hill-climb run with self-scores, external judge scores and Jetty trajectories." updated: 2026-09-28 publisher: Jetty (https://jetty.io) --- 02 — Runs · v2 · jettygrowthteam · auto-evolved runbook (weakest-axis targeting) # claude-code anthropic/claude-sonnet-5 claude-code driving anthropic/claude-sonnet-5 through OpenRouter, 5 hill-climb rounds from the v1 runbook. Judge, best round 25.3/40 round v4 (agent's pick) Self-score 36/40 inflation +10.7 Runs 5 $4.57 metered ![claude-code · Sonnet 5 best round](https://evaljetty.com/pelicans/img/v2-claude-sonnet5/v4.svg) best round v4 · 240351f2 ### Self-score vs judge, by axis Best round v4, 0–10 per axis agent self-scoreexternal judge **Judge:** The pelican reads well, with a white body, a long neck, an orange throat pouch and orange legs reaching toward the pedals, though the gray arm-like wing looks odd. The bicycle frame is structurally confused: the front wheel has no fork connecting it to the frame, the handlebar area is a tangle, and the body floats above an unclear seat. The clean gradient sky and speed lines are nice, but these joins in the frame and wing look glitchy. ### Score by round Out of 40. Each round starts from the previous round's best SVG. Dashed line: the 28/40 pass threshold. self-scorejudgepass ≥ 28 ## 5 drawings, *oldest first.* Click a drawing to open it in the head-to-head viewer. The outlined card is the agent's best round. Verdicts are derived (code checks on the stored SVG and judge ≥ 28/40); see [Runs](https://evaljetty.com/pelicans/runs/index.html#all-runs). [![claude-code · Sonnet 5 round v1](https://evaljetty.com/pelicans/img/v2-claude-sonnet5/v1.svg)](https://evaljetty.com/pelicans/investigations/best-pelican.html#v2-claude-sonnet5/v1) **v1** failjudge **26.5** · self 28 ea416761[runbook](https://evaljetty.com/pelicans/author/versions.html#v2-claude-sonnet5/v1) [![claude-code · Sonnet 5 round v2](https://evaljetty.com/pelicans/img/v2-claude-sonnet5/v2.svg)](https://evaljetty.com/pelicans/investigations/best-pelican.html#v2-claude-sonnet5/v2) **v2** failjudge **27.3** · self 34 b77ea720[runbook](https://evaljetty.com/pelicans/author/versions.html#v2-claude-sonnet5/v2) [![claude-code · Sonnet 5 round v3](https://evaljetty.com/pelicans/img/v2-claude-sonnet5/v3.svg)](https://evaljetty.com/pelicans/investigations/best-pelican.html#v2-claude-sonnet5/v3) **v3** failjudge **27** · self 34 6e98127a[runbook](https://evaljetty.com/pelicans/author/versions.html#v2-claude-sonnet5/v3) [![claude-code · Sonnet 5 round v4](https://evaljetty.com/pelicans/img/v2-claude-sonnet5/v4.svg)](https://evaljetty.com/pelicans/investigations/best-pelican.html#v2-claude-sonnet5/v4) **v4** · best failjudge **25.3** · self 36 240351f2[runbook](https://evaljetty.com/pelicans/author/versions.html#v2-claude-sonnet5/v4) [![claude-code · Sonnet 5 round v5](https://evaljetty.com/pelicans/img/v2-claude-sonnet5/v5.svg)](https://evaljetty.com/pelicans/investigations/best-pelican.html#v2-claude-sonnet5/v5) **v5** failjudge **26.2** · self 36 1925c665[runbook](https://evaljetty.com/pelicans/author/versions.html#v2-claude-sonnet5/v5) ### Scores per round | Round | Pelican | Bicycle | Composition | Polish | Self total | Judge total | Verdict | Judge spread | Cost | Minutes | Trajectory | | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | | v1 | 7self 7 | 6.2self 8 | 6.5self 7 | 6.8self 6 | 28 | 26.5 | fail | 1 | $0.80 | 5.7 | ea416761 | | v2 | 7.2self 8 | 6self 8 | 7self 9 | 7.2self 9 | 34 | 27.3 | fail | 1 | $0.96 | 5.9 | b77ea720 | | v3 | 7.3self 9 | 6self 8 | 6.8self 9 | 6.8self 8 | 34 | 27 | fail | 1.5 | $0.74 | 5.6 | 6e98127a | | v4 | 7.5self 9 | 5self 9 | 6.5self 8 | 6.3self 10 | 36 | 25.3 | fail | 1 | $0.81 | 6.4 | 240351f2 | | v5 | 7.3self 9 | 5.3self 9 | 6.8self 9 | 6.7self 9 | 36 | 26.2 | fail | 0.5 | $1.26 | 11.8 | 1925c665 | --- Source: https://evaljetty.com/pelicans/runs/agents/v2-claude-sonnet5.html · Evals by Jetty · Run your own evals: https://jetty.io/?utm_source=evaljetty&utm_medium=llms