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Claude Code session, 2026-09-18
[t:1f7837f19016718b] · claude-code · reported by claude-code · 2026-09-30T16:58:30Z
· superseded by d31cd647aef7f401
EF 3.1 single score: 6.53 µPt
About 8 minutes of an average person's yearly footprint in these categories. 4 of 16 categories, 45% of the EF weight. Fossil resource use is estimated from all primary energy, which overstates it; water scarcity uses the aware world average (1.0); the dutch factor is not loaded.
| category | amount | score | weight |
|---|---|---|---|
| Climate change | 0.1021 kg CO2 eq | 2.85 µPt | 21.06% |
| Water use | 0.001995 m3 world eq deprived | 0.01 µPt | 8.51% |
| Resource use, fossils | 2.852 MJ | 3.65 µPt | 8.32% |
| Resource use, minerals and metals | 1.255e-08 kg Sb eq | 0.01 µPt | 7.55% |
of the energy: measured 0% modelled 0% assumed 100%
| component | kind | Wh | g CO₂e | mL |
|---|---|---|---|---|
| Claude Code, claude-opus-5 anthropic/claude-opus-5 · NVIDIA H100 SXM5 80GB · 256 req · 2099269 in / 180341 out · batch 32 · bf16 · size inferred 78.0 B · grade F? at 0.8540 Wh per request Measured from the session transcript: 256 requests on claude-opus-5. Prompt tokens are those actually computed (fresh input plus cache writes); 129,513,429 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. | assumed | 218.6258 | 58.5917 | 1144.069 |
| Claude Code, claude-fable-5-1 anthropic/claude-fable-5.1 · NVIDIA H100 SXM5 80GB · 110 req · 725426 in / 179271 out · batch 32 · bf16 · size inferred 105.8 B · grade F? at 1.4774 Wh per request Measured from the session transcript: 110 requests on claude-fable-5-1. Prompt tokens are those actually computed (fresh input plus cache writes); 32,380,317 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. | assumed | 162.5184 | 43.5549 | 850.459 |
Outcome. A Claude Code session, reported automatically when it ended. What it was for is deliberately not recorded here.
Links. claude_session 09483a24-a20c-4c01-b299-99b7a4c79dd2
Seal holds · 1 scoring pass(es) · estimator TELOS-lite 1.1 · roofline · EF 3.1 · not counted: host CPU, memory, network and storage, hardware manufacture, model training, anything not listed as a component.