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Claude Code session, 2026-10-12 to 2026-10-14

[t:79ffd9e6085f6be3] · claude-code · reported by claude-code · 2026-10-16T14:37:59Z

1555.282Wh, whole session
416.816g CO₂e location · 139.975 market
8138.8mL water, on + off-site
1555.282Wh per session

EF 3.1 single score: 18.89 µPt

About 14 minutes of an average person's yearly footprint in these categories. 9 of 16 categories, 72% of the EF weight. Fossil resource use counts the fuel burnt for dutch electricity, not its supply chain; water scarcity uses the aware factor for the netherlands (0.957).

categoryamountscoreweight
Climate change0.4168 kg CO2 eq11.62 µPt21.06%
Water use0.00779 m3 world eq deprived0.06 µPt8.51%
Resource use, fossils5.108 MJ6.54 µPt8.32%
Resource use, minerals and metals5.122e-08 kg Sb eq0.06 µPt7.55%
Acidification0.0001639 mol H+ eq.0.18 µPt6.20%
Eutrophication, terrestrial0.0002746 mol N eq.0.06 µPt3.71%
Eutrophication, marine5.065e-05 kg N eq.0.08 µPt2.96%
Photochemical ozone formation0.0001381 kg NMVOC eq.0.16 µPt4.78%
Particulate matter8.856e-10 disease incidences0.13 µPt8.96%

of the energy: measured 0% modelled 0% assumed 100%

componentkindWhg CO₂emL
Claude Code, claude-opus-5-5
anthropic/claude-opus-5.5 · NVIDIA H100 SXM5 80GB · 693 req · 6145521 in / 683065 out · batch 32 · bf16 · size inferred 63.6 B · grade G? at 2.1031 Wh per request
Measured from the session transcript: 693 requests on claude-opus-5-5. Prompt tokens are those actually computed (fresh input plus cache writes); 304,025,849 more were read from the prompt cache and are not recomputed, and loading that cache is not modelled. The model's size is not published, so it is inferred from its price.
assumed1457.4160390.58757626.658
Claude Code, claude-fable-5-1
anthropic/claude-fable-5.1 · NVIDIA H100 SXM5 80GB · 65 req · 285513 in / 98221 out · batch 32 · bf16 · size inferred 93.0 B · grade G? at 1.5056 Wh per request
Measured from the session transcript: 65 requests on claude-fable-5-1. Prompt tokens are those actually computed (fresh input plus cache writes); 13,666,570 more were read from the prompt cache and are not recomputed, and loading that cache is not modelled. The model's size is not published, so it is inferred from its price.
assumed97.865826.2280512.132

Outcome. A Claude Code session, reported automatically when it ended. What it was for is deliberately not recorded here.

Links. claude_session 40eea6e7-2ce9-4dcf-886a-4314d7a571d5

Seal holds · 1 scoring pass(es) · estimator TELOS-lite 1.2 · roofline · EF 3.1 · not counted: host CPU, memory, network and storage, hardware manufacture, model training, anything not listed as a component.