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tier
int64
2
6
task
stringclasses
8 values
task_description
stringclasses
8 values
tool
stringclasses
5 values
model
stringclasses
5 values
harness
stringclasses
4 values
permissions
stringclasses
4 values
run
int64
1
5
measured
stringdate
2026-10-23 00:00:00
2026-10-24 00:00:00
score
int64
0
38
max_score
int64
1
38
full_marks
bool
2 classes
seconds
int64
14
1.81k
input_tokens
int64
7.35k
7.79M
cache_read_tokens
int64
0
7.53M
output_tokens
int64
118
110k
api_cost_usd
float64
0
0.96
⌀
excluded
bool
2 classes
note
stringclasses
15 values
bugs_fixed_of_6
float64
0
6
⌀
feature_checks_of_9
float64
0
9
⌀
old_tests_kept_of_15
float64
15
15
⌀
module_tests_of_32
float64
32
32
⌀
page_tests_of_6
float64
6
6
⌀
solved
bool
2 classes
new_test_failures
float64
0
20
⌀
hidden_cases_passed
float64
0
6
⌀
hidden_cases
float64
6
7
⌀
lines_added
float64
0
62
⌀
lines_removed
float64
0
6
⌀
tests_allowed
bool
2 classes
2
2
Five-level brick game with pause, level skip and saved progress (single file)
codex
gpt-6-luna
Codex CLI 0.162
default
1
2026-10-23
9
9
true
46
47,254
40,448
2,902
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
codex
gpt-6-luna
Codex CLI 0.162
default
2
2026-10-23
9
9
true
54
66,634
58,624
3,885
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
codex
gpt-6-luna
Codex CLI 0.162
default
3
2026-10-23
9
9
true
42
65,759
58,240
3,349
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
codex
gpt-6-luna
Codex CLI 0.162
default
4
2026-10-23
9
9
true
43
48,041
36,864
3,832
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
codex
gpt-6-luna
Codex CLI 0.162
default
5
2026-10-23
9
9
true
41
47,581
40,448
3,162
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
1
2026-10-23
9
9
true
189
85,623
60,420
9,622
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
2
2026-10-23
9
9
true
87
34,908
18,631
7,219
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
3
2026-10-23
9
9
true
95
36,296
19,276
7,973
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
4
2026-10-23
9
9
true
77
20,836
7,070
6,942
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
5
2026-10-23
9
9
true
106
37,693
19,431
9,191
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
1
2026-10-23
9
9
true
102
68,808
22,012
25,223
0.0222
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
2
2026-10-23
9
9
true
87
64,656
34,005
21,136
0.017
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
3
2026-10-23
9
9
true
98
152,145
120,471
22,372
0.0187
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
4
2026-10-23
9
9
true
83
64,473
34,005
20,911
0.0169
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
5
2026-10-23
9
9
true
85
145,790
116,073
19,960
0.0171
false
pause check passed in 2 of 5 scorings; the failures came from the ball being re-served after a lost life just before resuming (no movement to see). Pause code read and works; counted as passed.
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
opus
claude-opus-5-5
Claude Code 2.1.295
default
1
2026-10-23
9
9
true
48
48,457
33,418
6,016
0.2473
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
opus
claude-opus-5-5
Claude Code 2.1.295
default
2
2026-10-23
9
9
true
58
49,770
33,418
7,361
0.2847
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
opus
claude-opus-5-5
Claude Code 2.1.295
default
3
2026-10-23
9
9
true
51
48,796
33,418
6,401
0.2577
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
opus
claude-opus-5-5
Claude Code 2.1.295
default
4
2026-10-23
9
9
true
71
50,666
33,418
8,308
0.3108
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
opus
claude-opus-5-5
Claude Code 2.1.295
default
5
2026-10-23
9
9
true
59
49,815
33,418
7,426
0.2864
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
1
2026-10-23
9
9
true
32
47,345
33,230
5,163
0.1147
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
2
2026-10-23
9
9
true
34
47,711
33,230
5,548
0.12
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
3
2026-10-23
9
9
true
33
46,948
33,230
4,809
0.1096
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
4
2026-10-23
9
9
true
32
47,227
33,230
5,041
0.113
false
null
null
null
null
null
null
null
null
null
null
null
null
null
2
2
Five-level brick game with pause, level skip and saved progress (single file)
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
5
2026-10-23
9
9
true
36
48,425
33,230
6,281
0.1302
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
codex
gpt-6-luna
Codex CLI 0.162
default
1
2026-10-23
12
12
true
93
94,460
73,344
6,975
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
codex
gpt-6-luna
Codex CLI 0.162
default
2
2026-10-23
12
12
true
70
70,978
60,800
5,970
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
codex
gpt-6-luna
Codex CLI 0.162
default
3
2026-10-23
12
12
true
99
91,953
78,848
8,526
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
codex
gpt-6-luna
Codex CLI 0.162
default
4
2026-10-23
4
12
false
74
86,016
71,808
5,478
null
false
app.js contains literal "\n" sequences: a syntax error (node --check)
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
codex
gpt-6-luna
Codex CLI 0.162
default
5
2026-10-23
12
12
true
125
159,767
141,696
12,650
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
1
2026-10-23
12
12
true
102
22,835
7,212
8,962
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
2
2026-10-23
12
12
true
93
21,524
7,224
6,914
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
3
2026-10-23
12
12
true
129
37,037
19,675
7,763
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
4
2026-10-23
12
12
true
89
21,044
7,224
7,090
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
5
2026-10-23
12
12
true
136
23,691
7,215
8,995
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
1
2026-10-23
12
12
true
91
446,030
414,784
19,472
0.0201
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
2
2026-10-23
12
12
true
72
229,818
203,227
16,441
0.0156
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
3
2026-10-23
12
12
true
79
295,366
265,863
18,582
0.0178
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
4
2026-10-23
12
12
true
97
374,460
342,787
20,406
0.02
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
5
2026-10-23
12
12
true
93
473,649
440,608
20,649
0.0213
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
opus
claude-opus-5-5
Claude Code 2.1.295
default
1
2026-10-23
12
12
true
77
115,058
95,001
9,992
0.3793
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
opus
claude-opus-5-5
Claude Code 2.1.295
default
2
2026-10-23
12
12
true
90
257,105
236,349
10,230
0.4178
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
opus
claude-opus-5-5
Claude Code 2.1.295
default
3
2026-10-23
12
12
true
87
115,994
95,592
10,471
0.3917
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
opus
claude-opus-5-5
Claude Code 2.1.295
default
4
2026-10-23
12
12
true
104
189,357
166,745
12,569
0.4656
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
opus
claude-opus-5-5
Claude Code 2.1.295
default
5
2026-10-23
12
12
true
76
82,779
63,858
9,004
0.3442
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
1
2026-10-23
12
12
true
46
48,655
33,404
5,496
0.1226
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
2
2026-10-23
12
12
true
27
47,884
33,404
4,763
0.1122
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
3
2026-10-23
12
12
true
33
48,894
33,404
5,708
0.1257
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
4
2026-10-23
12
12
true
28
47,863
33,404
4,743
0.1119
false
null
null
null
null
null
null
null
null
null
null
null
null
null
3
3
Multi-file expense tracker (CSV module, summary module, UI)
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
5
2026-10-23
12
12
true
54
106,425
89,029
7,070
0.1581
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
4
2026-10-23
0
23
false
21
7,806
0
118
null
true
First attempt: ended after 12 s when its first command (Get-ChildItem -Force) was auto-denied in headless mode; re-run below.
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
codex
gpt-6-luna
Codex CLI 0.162
default
1
2026-10-23
23
23
true
127
124,778
107,776
11,270
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
codex
gpt-6-luna
Codex CLI 0.162
default
2
2026-10-23
23
23
true
114
116,387
103,168
7,585
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
codex
gpt-6-luna
Codex CLI 0.162
default
3
2026-10-23
20
23
false
129
96,923
77,312
10,413
null
false
Fixed category select without Food/Fun/Bills and amounts shown as "−$250.50"; sort/budgets/report failures come from that, checker to be reviewed.
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
codex
gpt-6-luna
Codex CLI 0.162
default
4
2026-10-23
23
23
true
131
131,729
111,616
14,567
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
codex
gpt-6-luna
Codex CLI 0.162
default
5
2026-10-23
23
23
true
124
131,143
111,360
14,211
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
1
2026-10-23
23
23
true
343
76,926
45,121
24,722
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
2
2026-10-23
23
23
true
292
25,104
13,105
25,106
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
3
2026-10-23
23
23
true
112
35,604
18,589
9,569
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
4
2026-10-23
23
23
true
197
47,237
22,254
17,083
null
false
Re-run 2026-10-23 19:45 with a read-only listing allow-rule; two earlier tries ended at once when the first step (Get-ChildItem -Force) was auto-denied in headless accept-edits mode.
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
5
2026-10-23
23
23
true
241
47,309
20,031
20,118
null
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
1
2026-10-23
23
23
true
164
520,015
468,522
41,374
0.0357
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
2
2026-10-23
23
23
true
128
468,931
424,963
31,982
0.029
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
3
2026-10-23
23
23
true
185
1,104,546
1,048,319
43,363
0.0434
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
4
2026-10-23
23
23
true
153
633,275
586,849
34,764
0.0325
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
5
2026-10-23
23
23
true
186
1,181,333
1,125,512
41,733
0.0433
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
opus
claude-opus-5-5
Claude Code 2.1.295
default
1
2026-10-23
23
23
true
121
357,031
331,497
14,598
0.5624
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
opus
claude-opus-5-5
Claude Code 2.1.295
default
2
2026-10-23
23
23
true
111
187,662
163,023
12,983
0.4893
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
opus
claude-opus-5-5
Claude Code 2.1.295
default
3
2026-10-23
23
23
true
130
379,892
351,623
15,944
0.6153
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
opus
claude-opus-5-5
Claude Code 2.1.295
default
4
2026-10-23
23
23
true
138
512,148
483,453
17,001
0.6662
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
opus
claude-opus-5-5
Claude Code 2.1.295
default
5
2026-10-23
23
23
true
140
445,422
417,008
16,453
0.6397
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
1
2026-10-23
23
23
true
67
115,545
93,315
11,725
0.2248
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
2
2026-10-23
23
23
true
67
54,321
34,166
9,691
0.1844
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
3
2026-10-23
23
23
true
83
153,560
130,983
11,727
0.2338
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
4
2026-10-23
23
23
true
178
342,541
300,262
31,477
0.5439
false
null
null
null
null
null
null
null
null
null
null
null
null
null
4
4
Budget app: 5 modules, 3 hash-routed views, undo/redo, budgets, reports
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
5
2026-10-23
23
23
true
139
153,040
130,785
11,382
0.229
false
null
null
null
null
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
codex
gpt-6-luna
Codex CLI 0.162
default
1
2026-10-23
38
38
true
76
238,208
215,040
3,650
null
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
codex
gpt-6-luna
Codex CLI 0.162
default
2
2026-10-23
38
38
true
72
232,873
211,584
4,118
null
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
codex
gpt-6-luna
Codex CLI 0.162
default
3
2026-10-23
37
38
false
79
205,814
185,088
4,661
null
false
null
6
8
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
codex
gpt-6-luna
Codex CLI 0.162
default
4
2026-10-23
38
38
true
74
212,342
178,944
3,950
null
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
1
2026-10-23
15
38
false
14
7,350
0
148
null
true
Ended after 14 s: first step Get-ChildItem -Recurse -Name was auto-denied (Windows allow-rules need regex). Excluded; rules fixed from run 2.
0
0
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
2
2026-10-23
38
38
true
255
212,205
167,241
14,716
null
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
3
2026-10-23
38
38
true
215
104,744
74,546
15,265
null
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
1
2026-10-23
38
38
true
137
703,076
648,984
27,642
0.0311
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
2
2026-10-23
38
38
true
134
658,472
603,166
31,693
0.0329
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
3
2026-10-23
38
38
true
135
841,391
789,853
26,135
0.0313
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
4
2026-10-23
38
38
true
138
816,961
757,602
29,570
0.0342
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
opus
claude-opus-5-5
Claude Code 2.1.295
default
1
2026-10-23
38
38
true
111
411,169
372,905
13,839
0.6574
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
opus
claude-opus-5-5
Claude Code 2.1.295
default
2
2026-10-23
38
38
true
88
326,410
294,686
10,274
0.5181
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
opus
claude-opus-5-5
Claude Code 2.1.295
default
3
2026-10-23
38
38
true
87
289,321
255,962
10,685
0.5317
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
opus
claude-opus-5-5
Claude Code 2.1.295
default
4
2026-10-23
38
38
true
92
333,800
299,157
10,943
0.5558
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
1
2026-10-23
38
38
true
90
303,641
265,737
13,889
0.3436
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
2
2026-10-23
38
38
true
116
535,109
496,706
17,447
0.4274
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
3
2026-10-23
38
38
true
90
332,161
296,107
15,011
0.3535
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5a
Fix 6 reported bugs and add 3 features in an existing 1,032-line budget app
sonnet
claude-sonnet-5-5
Claude Code 2.1.295
default
4
2026-10-23
38
38
true
57
271,603
242,589
8,677
0.2513
false
null
6
9
15
null
null
null
null
null
null
null
null
null
5
5b
Spreadsheet engine and page (formulas, precedence, cycles, relative/absolute copy, undo)
codex
gpt-6-luna
Codex CLI 0.162
default
1
2026-10-23
38
38
true
147
446,101
416,896
12,397
null
false
null
null
null
null
32
6
null
null
null
null
null
null
null
5
5b
Spreadsheet engine and page (formulas, precedence, cycles, relative/absolute copy, undo)
gemini
gemini-4-argon
Antigravity CLI 1.4.5
allow-rules
1
2026-10-23
38
38
true
295
109,122
76,394
19,180
null
false
null
null
null
null
32
6
null
null
null
null
null
null
null
5
5b
Spreadsheet engine and page (formulas, precedence, cycles, relative/absolute copy, undo)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
1
2026-10-23
38
38
true
321
1,112,821
1,025,558
78,500
0.067
false
null
null
null
null
32
6
null
null
null
null
null
null
null
5
5b
Spreadsheet engine and page (formulas, precedence, cycles, relative/absolute copy, undo)
haiku
claude-haiku-5-5
Claude Code 2.1.295
default
2
2026-10-23
38
38
true
345
1,440,391
1,344,213
84,105
0.1248
false
null
null
null
null
32
6
null
null
null
null
null
null
null
5
5b
Spreadsheet engine and page (formulas, precedence, cycles, relative/absolute copy, undo)
opus
claude-opus-5-5
Claude Code 2.1.295
default
1
2026-10-23
38
38
true
226
305,324
268,754
26,366
0.8736
false
null
null
null
null
32
6
null
null
null
null
null
null
null
End of preview. Expand in Data Studio

Where Claude Haiku falls behind Opus: 163 coding runs with hidden tests

163 headless runs (plus 11 excluded) of Claude Code (Haiku 5.5, Sonnet 5.5, Opus 5.5), Codex (gpt-6-luna) and Antigravity CLI (Gemini 4 Argon) on six levels of coding tasks, measured 2026-10-23 to 24 on one Windows 11 laptop.

Page, tables and method: https://tokensave.app/data/ai-coding-limit-line · DOI 10.5281/zenodo.23600477 · License: CC BY 4.0

Test cases passed per run on the hard marked bug, by model, with and without running tests

Key findings

  • Levels 2 to 5 (apps from a spec, and an existing 1,032-line app with six symptom-only bugs plus three features): Haiku, Sonnet and Opus got full marks on all 21 runs each, Gemini 18/18, Codex 17/20.
  • Level 6, three real bugs fixed in the marked Markdown parser in Sep to Oct 2026: the easy and medium bugs were solved by almost every run. No run fully fixed the hard one (7-case upstream test), but the models split: Sonnet passed 6 of 7 in 8 of 10 runs, Opus in 6 of 10, Haiku in 1 of 10. The missed cases are code spans containing a backtick, which the bug report did not mention.
  • Letting the agents run the tests (dependencies preinstalled, node, npm test/npm run, read-only git allowed; 5 runs per Claude model) did not change the cases passed. It removed damage: without tests 2 of 15 Claude runs broke other spec tests (one Opus run left marked unable to load), with tests 0 of 15. Codex was also run with tests allowed, but its Windows sandbox blocked esbuild in all 5 runs (excluded).
  • Average API cost per run (Claude Code's own figure): Haiku $0.026, Sonnet $0.19, Opus $0.45.

Files

Prompts, checkers, reference solutions and every run log are in the GitHub folder: https://github.com/johnisking/token-cost-by-language/tree/main/limit-line

  • ai-coding-limit-line.csv / .json: one row per run (score, full marks, seconds, tokens, cost, notes; level 5 and 6 detail columns). excluded marks runs stopped by the harness or by quota.
  • prompts/: every prompt (tier2 to tier5b, tier6_t1 to t3, and tier6_t3_dev for the tests-allowed runs).
  • checkers/: the hidden-test checkers (Playwright, Python) and the tier-6 scorer. ref/, tier5a/, tier5b/: reference solutions, the planted-bug base app and broken variants used to validate the checkers.
  • results/: raw checker output per level.
  • runs/<tool>[dev]_t<level>_r<n>/ (dev = tests allowed): each run's log (run.jsonl or run.json), seconds.txt and the code it produced (work/; for level 6 only work/src). The PC user name is replaced by USER.
  • build_dataset.py: builds the CSV/JSON from the results and logs.

Notes

  • Level 6 scoring: a clean checkout of the commit before the upstream fix plus only the run's src/, the upstream fix's spec file added, then marked's spec suite. 1 point if the hidden spec passes and no other spec test newly fails.
  • Antigravity's headless mode ends a turn at the first denied command. Gemini runs used read-only allow-rules; the level 6 runs were repeated with full permissions (geminifull_*, run by the owner).
  • Few runs per cell at the higher levels (1 to 5); see the page for all limitations.
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