| 1 | { |
| 2 | "updated_at": "2026-08-31T23:26:45.453Z", |
| 3 | "methodology": "https://github.com/elevenmessenger/messenger/blob/main/docs/comparison-carbon.md", |
| 4 | "built": { |
| 5 | "unit": "kg CO2e", |
| 6 | "factors_mg_co2e_per_output_token": { |
| 7 | "low": 0.1, |
| 8 | "central": 0.55, |
| 9 | "high": 3 |
| 10 | }, |
| 11 | "not_counted": "cache reads (no public per-token figure exists), cloud-side agent runs, and contributor machines that haven't accrued their entries yet", |
| 12 | "entries": [ |
| 13 | { |
| 14 | "period_start": "2026-06-27T00:00:00.000Z", |
| 15 | "period_end": "2026-07-03T00:00:00.000Z", |
| 16 | "source": "radia-doodling", |
| 17 | "basis": "extrapolated", |
| 18 | "sessions": null, |
| 19 | "output_tokens": 9098065, |
| 20 | "fresh_input_tokens": null, |
| 21 | "cache_read_tokens": null, |
| 22 | "kg_low": 0.9, |
| 23 | "kg_central": 5, |
| 24 | "kg_high": 27.3, |
| 25 | "note": "transcripts pruned before the first measurement; commit-weighted share (165 of the 616 commits to 2026-07-11) of the first measured window's per-commit rate" |
| 26 | }, |
| 27 | { |
| 28 | "period_start": "2026-07-03T08:19:42.191Z", |
| 29 | "period_end": "2026-07-11T19:26:21.699Z", |
| 30 | "source": "radia-doodling", |
| 31 | "basis": "measured", |
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| 34 | "fresh_input_tokens": 144657973, |
| 35 | "cache_read_tokens": 7949132294, |
| 36 | "kg_low": 2.5, |
| 37 | "kg_central": 13.7, |
| 38 | "kg_high": 74.7, |
| 39 | "note": "local Claude Code transcripts, one dev machine" |
| 40 | }, |
| 41 | { |
| 42 | "period_start": "2026-07-03T08:19:42.191Z", |
| 43 | "period_end": "2026-07-12T11:08:41.593Z", |
| 44 | "source": "barbara-painting", |
| 45 | "basis": "measured", |
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| 48 | "fresh_input_tokens": 171281918, |
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| 50 | "kg_low": 2.7, |
| 51 | "kg_central": 15, |
| 52 | "kg_high": 82, |
| 53 | "note": "local Claude Code transcripts, one dev machine" |
| 54 | }, |
| 55 | { |
| 56 | "period_start": "2026-07-08T15:56:43.149Z", |
| 57 | "period_end": "2026-07-14T14:58:16.193Z", |
| 58 | "source": "margaret-gardening", |
| 59 | "basis": "measured", |
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| 64 | "kg_low": 0.1, |
| 65 | "kg_central": 0.5, |
| 66 | "kg_high": 2.8, |
| 67 | "note": "local Claude Code transcripts, one dev machine" |
| 68 | }, |
| 69 | { |
| 70 | "period_start": "2026-07-11T19:26:21.742Z", |
| 71 | "period_end": "2026-07-15T00:41:09.737Z", |
| 72 | "source": "radia-doodling", |
| 73 | "basis": "measured", |
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| 79 | "kg_central": 4.2, |
| 80 | "kg_high": 22.8, |
| 81 | "note": "local Claude Code transcripts, one dev machine" |
| 82 | }, |
| 83 | { |
| 84 | "period_start": "2026-07-12T11:08:41.859Z", |
| 85 | "period_end": "2026-07-17T09:25:33.300Z", |
| 86 | "source": "barbara-painting", |
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| 93 | "kg_central": 4.3, |
| 94 | "kg_high": 23.4, |
| 95 | "note": "local Claude Code transcripts, one dev machine" |
| 96 | }, |
| 97 | { |
| 98 | "period_start": "2026-07-15T00:41:09.738Z", |
| 99 | "period_end": "2026-07-18T10:10:11.846Z", |
| 100 | "source": "radia-doodling", |
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| 107 | "kg_central": 2.3, |
| 108 | "kg_high": 12.3, |
| 109 | "note": "local Claude Code transcripts, one dev machine" |
| 110 | }, |
| 111 | { |
| 112 | "period_start": "2026-07-14T14:58:17.192Z", |
| 113 | "period_end": "2026-07-20T14:21:50.040Z", |
| 114 | "source": "margaret-gardening", |
| 115 | "basis": "measured", |
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| 121 | "kg_central": 0.2, |
| 122 | "kg_high": 1.1, |
| 123 | "note": "local Claude Code transcripts, one dev machine" |
| 124 | }, |
| 125 | { |
| 126 | "period_start": "2026-07-18T10:10:11.858Z", |
| 127 | "period_end": "2026-07-21T13:18:42.764Z", |
| 128 | "source": "radia-doodling", |
| 129 | "basis": "measured", |
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| 135 | "kg_central": 2.3, |
| 136 | "kg_high": 12.6, |
| 137 | "note": "local Claude Code transcripts, one dev machine" |
| 138 | }, |
| 139 | { |
| 140 | "period_start": "2026-07-17T09:25:33.303Z", |
| 141 | "period_end": "2026-07-21T16:59:56.721Z", |
| 142 | "source": "barbara-painting", |
| 143 | "basis": "measured", |
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| 149 | "kg_central": 3.3, |
| 150 | "kg_high": 18.2, |
| 151 | "note": "local Claude Code transcripts, one dev machine" |
| 152 | }, |
| 153 | { |
| 154 | "period_start": "2026-07-06T09:04:38.260Z", |
| 155 | "period_end": "2026-07-22T13:41:42.647Z", |
| 156 | "source": "grace-whistling", |
| 157 | "basis": "measured", |
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| 164 | "kg_high": 18.5, |
| 165 | "note": "local Claude Code transcripts, one dev machine" |
| 166 | }, |
| 167 | { |
| 168 | "period_start": "2026-07-21T13:18:42.779Z", |
| 169 | "period_end": "2026-07-24T20:48:57.275Z", |
| 170 | "source": "radia-doodling", |
| 171 | "basis": "measured", |
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| 176 | "kg_low": 0.2, |
| 177 | "kg_central": 1.3, |
| 178 | "kg_high": 7.3, |
| 179 | "note": "local Claude Code transcripts, one dev machine" |
| 180 | }, |
| 181 | { |
| 182 | "period_start": "2026-07-21T16:59:59.182Z", |
| 183 | "period_end": "2026-07-25T14:08:39.461Z", |
| 184 | "source": "barbara-painting", |
| 185 | "basis": "measured", |
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| 190 | "kg_low": 0.2, |
| 191 | "kg_central": 1.3, |
| 192 | "kg_high": 7.3, |
| 193 | "note": "local Claude Code transcripts, one dev machine" |
| 194 | }, |
| 195 | { |
| 196 | "period_start": "2026-07-24T20:49:13.318Z", |
| 197 | "period_end": "2026-07-28T06:18:25.717Z", |
| 198 | "source": "radia-doodling", |
| 199 | "basis": "measured", |
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| 204 | "kg_low": 0.1, |
| 205 | "kg_central": 0.4, |
| 206 | "kg_high": 2.2, |
| 207 | "note": "local Claude Code transcripts, one dev machine" |
| 208 | }, |
| 209 | { |
| 210 | "period_start": "2026-07-28T12:49:42.898Z", |
| 211 | "period_end": "2026-07-28T12:50:09.619Z", |
| 212 | "source": "donald-whistling", |
| 213 | "basis": "measured", |
| 214 | "sessions": 1, |
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| 216 | "fresh_input_tokens": 61142, |
| 217 | "cache_read_tokens": 109474, |
| 218 | "kg_low": 0, |
| 219 | "kg_central": 0, |
| 220 | "kg_high": 0, |
| 221 | "note": "local Claude Code transcripts, one dev machine" |
| 222 | }, |
| 223 | { |
| 224 | "period_start": "2026-07-28T12:50:09.802Z", |
| 225 | "period_end": "2026-07-28T21:14:12.692Z", |
| 226 | "source": "donald-whistling", |
| 227 | "basis": "measured", |
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| 235 | "note": "local Claude Code transcripts, one dev machine" |
| 236 | }, |
| 237 | { |
| 238 | "period_start": "2026-07-28T21:14:12.693Z", |
| 239 | "period_end": "2026-07-29T06:38:01.117Z", |
| 240 | "source": "donald-whistling", |
| 241 | "basis": "measured", |
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| 247 | "kg_central": 0.1, |
| 248 | "kg_high": 0.5, |
| 249 | "note": "local Claude Code transcripts, one dev machine" |
| 250 | }, |
| 251 | { |
| 252 | "period_start": "2026-07-22T13:41:42.682Z", |
| 253 | "period_end": "2026-07-31T10:30:25.384Z", |
| 254 | "source": "grace-whistling", |
| 255 | "basis": "measured", |
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| 261 | "kg_central": 0.4, |
| 262 | "kg_high": 1.9, |
| 263 | "note": "local Claude Code transcripts, one dev machine" |
| 264 | }, |
| 265 | { |
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| 267 | "period_end": "2026-07-31T11:22:21.196Z", |
| 268 | "source": "grace-whistling", |
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| 277 | "note": "local Claude Code transcripts, one dev machine" |
| 278 | }, |
| 279 | { |
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| 281 | "period_end": "2026-08-03T19:21:05.376Z", |
| 282 | "source": "donald-whistling", |
| 283 | "basis": "measured", |
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| 291 | "note": "local Claude Code transcripts, one dev machine" |
| 292 | }, |
| 293 | { |
| 294 | "period_start": "2026-07-31T11:22:37.494Z", |
| 295 | "period_end": "2026-08-04T11:25:03.534Z", |
| 296 | "source": "grace-whistling", |
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| 307 | { |
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| 309 | "period_end": "2026-08-05T23:58:34.869Z", |
| 310 | "source": "donald-whistling", |
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| 319 | "note": "local Claude Code transcripts, one dev machine" |
| 320 | }, |
| 321 | { |
| 322 | "period_start": "2026-07-28T06:18:26.888Z", |
| 323 | "period_end": "2026-08-06T07:58:01.830Z", |
| 324 | "source": "radia-doodling", |
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| 333 | "note": "local Claude Code transcripts, one dev machine" |
| 334 | }, |
| 335 | { |
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| 337 | "period_end": "2026-08-28T19:58:54.183Z", |
| 338 | "source": "radia-doodling", |
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| 347 | "note": "local Claude Code transcripts, one dev machine" |
| 348 | }, |
| 349 | { |
| 350 | "period_start": "2026-08-28T19:59:07.901Z", |
| 351 | "period_end": "2026-08-31T23:26:45.453Z", |
| 352 | "source": "radia-doodling", |
| 353 | "basis": "measured", |
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| 361 | "note": "local Claude Code transcripts, one dev machine" |
| 362 | } |
| 363 | ], |
| 364 | "totals": { |
| 365 | "output_tokens": 108073337, |
| 366 | "kg_low": 10.6, |
| 367 | "kg_central": 59.4, |
| 368 | "kg_high": 324.1 |
| 369 | } |
| 370 | } |
| 371 | } |
| 372 | |
amadan