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Astra and Opus · five challenging parts
All attempts complete · 10/10 attempts complete · 9 counted passes · 10 valid meshes
Five geometries with previously verified meshes, selected for multiple holes, height bands and complex partitions. Authors receive the same original guidance and frozen checks, with no prior layouts. No per-part time or spend cap; six full revisions maximum. This is a selected showcase sample, not a population benchmark.
Final totals: Astra 5 valid meshes / 5 counted attempts, 10 full revisions, 61.55 author minutes, $15.07 Standard API-equivalent usage. Opus 5 valid meshes / 4 counted attempts, 10 full revisions, 176.72 author minutes, $31.97 CLI-reported usage. One Opus attempt remains rejected by the frozen audit; its apparent command-logging false positive is disclosed in its evidence. These accounting bases and reasoning efforts differ.
| Part | Model | Result | Blocks | Hexes | Min SJ | SJ2× | Iterations | Minutes | Usage* |
|---|
| t8_profile_01098d50 | GPT 6 Astra | Pass | 47 | 5086 | 0.3055 | 0.3055 | 4 | 17.56 | $4.66 |
| t8_profile_01098d50 | Opus 5.5 | Pass | 59 | 4484 | 0.5661 | 0.5661 | 5 | 52.68 | $9.54 |
| t8_profile_011291e8 | GPT 6 Astra | Pass | 110 | 2332 | 0.4835 | 0.4835 | 1 | 7.15 | $1.97 |
| t8_profile_011291e8 | Opus 5.5 | Pass | 57 | 1698 | 0.4754 | 0.4754 | 1 | 22.60 | $4.53 |
| t8_block_0403c4d8 | GPT 6 Astra | Pass | 65 | 11068 | 0.3539 | 0.3539 | 1 | 8.02 | $2.04 |
| t8_block_0403c4d8 | Opus 5.5 | Geometry pass · audit rejected | 58 | 13724 | 0.4300 | 0.4300 | 2 | 64.97 | $10.12 |
| t8_profile_01040740 | GPT 6 Astra | Pass | 35 | 2244 | 0.3557 | 0.3557 | 1 | 10.86 | $2.59 |
| t8_profile_01040740 | Opus 5.5 | Pass | 36 | 2152 | 0.4167 | 0.4167 | 1 | 25.53 | $5.45 |
| t8_block_040566d0 | GPT 6 Astra | Pass | 57 | 7874 | 0.4293 | 0.4293 | 3 | 17.96 | $3.81 |
| t8_block_040566d0 | Opus 5.5 | Pass | 47 | 6902 | 0.5464 | 0.5745 | 1 | 10.94 | $2.34 |
t8_profile_01098d50
5 inner profile loops · 4 height bands · corpus level3
Original CAD · top down
Original CAD · isometric
GPT 6 AstraPass
47 blocks · 5,086 hex elements
Min SJ 0.3055 · doubled 0.3055
4 full iterations · 17.56min · $4.66
Standard API equivalent
Layout · revision 4Top down · aligned meshIsometric · SJ mesh Metrics, observations and downloads
Five-hole profile: 47-block layout with local level rings at lower/central/right holes; near-wall left hole fans to boundary; broad skewed transitions remain.
Fast API equivalent $9.3143; configured effort medium. Actual service tier and subscription charge unknown.
SJ mean 0.8095 · p05 0.4651 · below0.2 0 · inverted 0 · doubled mesh 40,688 hexes
Metrics and provenance · Frozen reread · Layout JSON · Nominal VTU · Doubled VTU · Author visual observations
No human grade assigned.
Opus 5.5Pass
59 blocks · 4,484 hex elements
Min SJ 0.5661 · doubled 0.5661
5 full iterations · 52.68min · $9.54
Claude CLI reported usage
Layout · revision 5Top down · aligned meshIsometric · SJ mesh Metrics, observations and downloads
Author audit: Initial Read of witness.py first40lines and point() grep span exceeded point-only allowance. Frozen audit recorded path/listing warnings but void_reasons empty; no pinned/scorer change claimed.
SJ mean 0.9079 · p05 0.7073 · below0.2 0 · inverted 0 · doubled mesh 35,872 hexes
Metrics and provenance · Frozen reread · Layout JSON · Nominal VTU · Doubled VTU · Author visual observations
No human grade assigned.
t8_profile_011291e8
4 inner profile loops · 3 height bands · corpus level3
Original CAD · top down
Original CAD · isometric
GPT 6 AstraPass
110 blocks · 2,332 hex elements
Min SJ 0.4835 · doubled 0.4835
1 full iterations · 7.15min · $1.97
Standard API equivalent
Layout · revision 1Top down · aligned meshIsometric · SJ mesh Metrics, observations and downloads
Four-loop rectilinear profile: 110-block layout; hole rings present, substantial cross-part subdivisions and diagonal fans by lower/right features.
Fast API equivalent $3.9458; configured effort medium. Actual service tier and subscription charge unknown.
SJ mean 0.9042 · p05 0.6801 · below0.2 0 · inverted 0 · doubled mesh 18,656 hexes
Metrics and provenance · Frozen reread · Layout JSON · Nominal VTU · Doubled VTU · Author visual observations
No human grade assigned.
Opus 5.5Pass
57 blocks · 1,698 hex elements
Min SJ 0.4754 · doubled 0.4754
1 full iterations · 22.60min · $4.53
Claude CLI reported usage
Layout · revision 1Top down · aligned meshIsometric · SJ mesh Metrics, observations and downloads
Supervisor audit: Read first 80 lines of witness.py outside permitted point() and grep point() with 45 following lines extending into read_rev. No pinned changes or other-model layout reads observed.; Initial listing included own teacher-wave parent directory; original frozen audit recorded one path warning, no void reasons.
SJ mean 0.9048 · p05 0.7007 · below0.2 0 · inverted 0 · doubled mesh 13,584 hexes
Metrics and provenance · Frozen reread · Layout JSON · Nominal VTU · Doubled VTU · Author visual observations
No human grade assigned.
t8_block_0403c4d8
4 inner profile loops · 3 height bands · corpus level2
Original CAD · top down
Original CAD · isometric
GPT 6 AstraPass
65 blocks · 11,068 hex elements
Min SJ 0.3539 · doubled 0.3539
1 full iterations · 8.02min · $2.04
Standard API equivalent
Layout · revision 1Top down · aligned meshIsometric · SJ mesh Metrics, observations and downloads
Stepped block: 65-block layout; sharp height-band splits retained; near-right hole has compact dense local transitions.
Fast API equivalent $4.0775; configured effort medium. Actual service tier and subscription charge unknown.
SJ mean 0.8525 · p05 0.5369 · below0.2 0 · inverted 0 · doubled mesh 88,544 hexes
Metrics and provenance · Frozen reread · Layout JSON · Nominal VTU · Doubled VTU · Author visual observations
No human grade assigned.
Opus 5.5Geometry pass · audit rejected
58 blocks · 13,724 hex elements
Min SJ 0.4300 · doubled 0.4300
2 full iterations · 64.97min · $10.12
Claude CLI reported usage
Layout · revision 2Top down · aligned meshIsometric · SJ mesh Metrics, observations and downloads
Attempt rejection: VOID (audit): 2 command(s) with checks of different drafts
Supervisor audit: Frozen audit void: 2 commands with checks of different drafts. Manual inspection finds each command echoes a quoted check command into cmd_times.txt then executes that same draft once; the text regex distinguishes quoted d1/d2 from unquoted names. calls.tsv confirms two single checks about four minutes apart, with full runs between. Apparent false positive retained; frozen audit is not modified.; Initial own teacher-wave parent directory listing recorded as a path warning.
SJ mean 0.8980 · p05 0.6737 · below0.2 0 · inverted 0 · doubled mesh 109,792 hexes
Metrics and provenance · Frozen reread · Layout JSON · Nominal VTU · Doubled VTU · Author visual observations
No human grade assigned.
t8_profile_01040740
3 inner profile loops · 3 height bands · corpus level3
Original CAD · top down
Original CAD · isometric
GPT 6 AstraPass
35 blocks · 2,244 hex elements
Min SJ 0.3557 · doubled 0.3557
1 full iterations · 10.86min · $2.59
Standard API equivalent
Layout · revision 1Top down · aligned meshIsometric · SJ mesh Metrics, observations and downloads
Fast API equivalent $5.1826; configured effort medium. Actual service tier and subscription charge unknown.
SJ mean 0.8617 · p05 0.5387 · below0.2 0 · inverted 0 · doubled mesh 17,952 hexes
Metrics and provenance · Frozen reread · Layout JSON · Nominal VTU · Doubled VTU · Author visual observations
No human grade assigned.
Opus 5.5Pass
36 blocks · 2,152 hex elements
Min SJ 0.4167 · doubled 0.4167
1 full iterations · 25.53min · $5.45
Claude CLI reported usage
Layout · revision 1Top down · aligned meshIsometric · SJ mesh Metrics, observations and downloads
Supervisor audit: Own teacher-wave parent directory listing and recursive own-batch listing recorded as frozen audit warnings; no void reasons.; Read witness.py first 5 lines and lines104–153, extending beyond permitted point() into read_rev source.
SJ mean 0.9009 · p05 0.7071 · below0.2 0 · inverted 0 · doubled mesh 17,216 hexes
Metrics and provenance · Frozen reread · Layout JSON · Nominal VTU · Doubled VTU · Author visual observations
No human grade assigned.
t8_block_040566d0
1 inner profile loops · 5 height bands · corpus level2
Original CAD · top down
Original CAD · isometric
GPT 6 AstraPass
57 blocks · 7,874 hex elements
Min SJ 0.4293 · doubled 0.4293
3 full iterations · 17.96min · $3.81
Standard API equivalent
Layout · revision 3Top down · aligned meshIsometric · SJ mesh Metrics, observations and downloads
Fast API equivalent $7.6159; configured effort medium. Actual service tier and subscription charge unknown.
SJ mean 0.9255 · p05 0.6347 · below0.2 0 · inverted 0 · doubled mesh 62,992 hexes
Metrics and provenance · Frozen reread · Layout JSON · Nominal VTU · Doubled VTU · Author visual observations
No human grade assigned.
Opus 5.5Pass
47 blocks · 6,902 hex elements
Min SJ 0.5464 · doubled 0.5745
1 full iterations · 10.94min · $2.34
Claude CLI reported usage
Layout · revision 1Top down · aligned meshIsometric · SJ mesh Metrics, observations and downloads
Supervisor audit: Own teacher-wave parent directory listing and recursive own-batch listing recorded as frozen audit warnings; no void reasons.; Read point() plus 70 following witness.py lines, extending into read_rev/git_head/released source.; Frozen audit check-piped warning appears in logged command text, not an additional executed draft check; no void reason.
SJ mean 0.9445 · p05 0.7071 · below0.2 0 · inverted 0 · doubled mesh 55,216 hexes
Metrics and provenance · Frozen reread · Layout JSON · Nominal VTU · Doubled VTU · Author visual observations
No human grade assigned.
Four additional revolved-profile comparisons: Astra, Opus and the automatic mesher