BENCHMARK 1 · SLOTKEEPER BOOKING APP · TESTED OCT 14–25, 2026 · ONE RUN PER TOOL How we test →
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Test receipts

Every run we've scored, as a receipt: what we ran, on which plan, how long it took, what broke, and where the numbers come from. Open a receipt's review for the full story.

BenchCoded LabTest receipt

Bolt.new94.75 / 100

Works
30/30
Time
15/15
Bugs
11/15
Design
13.75/15
Deploy
15/15
Cost
10/10
Prompt
SlotKeeper, word for word
Prompts sent
1 (no fix prompts)
Time to working version
~7 min
Human minutes
Not recorded (protocol v1)
Checks
10/10
Bugs
1 major · 2 minor
Plan
Free · 1M-token survey bonus
Cost
$0
More receipt fields
Receipt ID
BC-SK1-BOLT
Status
Published · TESTED
Protocol
v1: free plan, no baseline
Tool
Bolt.new
Benchmark
SlotKeeper booking app
Date
Oct 21, 2026
Plan in full
Free
Model
Not recorded
Cost basis
Usage $0 on the free plan (1M-token survey bonus on the account)
Relationships
None
Retest due
Dec 20, 2026
Source: internal scorecard, recorded Oct 21, 2026. Full review
BenchCoded LabTest receipt

Base4493.5 / 100

Works
30/30
Time
15/15
Bugs
11/15
Design
12.5/15
Deploy
15/15
Cost
10/10
Prompt
SlotKeeper, word for word
Prompts sent
1 (no fix prompts)
Time to working version
8–9 min
Human minutes
Not recorded (protocol v1)
Checks
10/10
Bugs
4 minor
Plan
Free
Cost
Free plan (usage not shown)
More receipt fields
Receipt ID
BC-SK1-BASE44
Status
Published · TESTED
Protocol
v1: free plan, no baseline
Tool
Base44
Benchmark
SlotKeeper booking app
Date
Oct 14–15, 2026
Plan in full
Free
Model
Not shown by Base44
Cost basis
Free plan; usage not shown by the tool
Relationships
None
Retest due
Dec 14, 2026
Source: internal scorecard, recorded Oct 14–15, 2026. Full review
BenchCoded LabTest receipt

v090.875 / 100

Works
30/30
Time
12/15
Bugs
12/15
Design
11.875/15
Deploy
15/15
Cost
10/10
Prompt
SlotKeeper, word for word
Prompts sent
1 (no fix prompts)
Time to working version
~20 min
Human minutes
Not recorded (protocol v1)
Checks
10/10
Bugs
3 minor
Plan
Free
Cost
$0
More receipt fields
Receipt ID
BC-SK1-V0
Status
Published · TESTED
Protocol
v1: free plan, no baseline
Tool
v0
Benchmark
SlotKeeper booking app
Date
Oct 22, 2026
Plan in full
Free
Model
Not recorded
Cost basis
Usage $0 on the free plan
Relationships
None
Retest due
Dec 21, 2026
Source: internal scorecard, recorded Oct 22, 2026. Full review
BenchCoded LabTest receipt

Lovable87.25 / 100

Works
30/30
Time
12/15
Bugs
9/15
Design
11.25/15
Deploy
15/15
Cost
10/10
Prompt
SlotKeeper, word for word
Prompts sent
1 (no fix prompts)
Time to working version
~18 min active
Human minutes
Not recorded (protocol v1)
Checks
10/10
Bugs
1 critical · 2 minor
Plan
Free · waited overnight for credits
Cost
$0
More receipt fields
Receipt ID
BC-SK1-LOVABLE
Status
Published · TESTED
Protocol
v1: free plan, no baseline
Tool
Lovable
Benchmark
SlotKeeper booking app
Date
Oct 21–22, 2026
Plan in full
Free
Model
Not recorded
Cost basis
Usage $0 on the free plan, after an overnight credit wait
Relationships
None
Retest due
Dec 21, 2026
Under review: 86.25 if our 5-point critical-bug rule is applied (the scorecard took 4). Source: internal scorecard, recorded Oct 21–22, 2026. Full review
BenchCoded LabTest receipt

Replit Agent83.625 / 100

Works
30/30
Time
8/15
Bugs
10/15
Design
10.625/15
Deploy
15/15
Cost
10/10
Prompt
SlotKeeper, word for word
Prompts sent
1 (no fix prompts)
Time to working version
~23 min to live
Human minutes
Not recorded (protocol v1)
Checks
10/10
Bugs
5 minor
Plan
Free · deploy lasts 29 days
Cost
$0
More receipt fields
Receipt ID
BC-SK1-REPLIT
Status
Published · TESTED
Protocol
v1: free plan, no baseline
Tool
Replit Agent
Benchmark
SlotKeeper booking app
Date
Oct 24, 2026
Plan in full
Free
Model
Not recorded
Cost basis
Usage $0 on the free plan
Relationships
None
Retest due
Dec 23, 2026
87.625 if time counts to the agent's 13-minute finish, which would rank it above Lovable (87.25, or 86.25 under review). Source: internal scorecard, recorded Oct 24, 2026. Full review
BenchCoded LabTest receipt

ChatGPT Codex82.5 / 100

Works
30/30
Time
9/15
Bugs
11/15
Design
12.5/15
Deploy
10/15
Cost
10/10
Prompt
SlotKeeper, word for word
Prompts sent
4: the prompt, 2 fixes, 1 deploy setup
Time to working version
~20 min
Human minutes
Not timed. Recorded steps: 2 fix prompts and 1 deploy-setup prompt; the tester created a free Netlify account and access token
Checks
10/10
Bugs
3 minor
Plan
ChatGPT Plus features
Cost
$0 usage (inside the subscription)
More receipt fields
Receipt ID
BC-SK1-CODEX
Status
Published · TESTED
Protocol
v1 rules, general-AI baseline run
Tool
ChatGPT Codex
Benchmark
SlotKeeper booking app
Date
Oct 25, 2026
Plan in full
ChatGPT Plus features (a Pro account limited to Plus)
Model
GPT-6 Astra, default reasoning
Cost basis
Usage $0 within a ChatGPT subscription (Plus features); Netlify free plan
Relationships
None
Retest due
Dec 24, 2026
General-AI baseline, not ranked: a Plus-level plan, 2 fix prompts and a human-made hosting account. Bug score under review: 83.5 under our −1-per-minor rule. Source: internal scorecard, recorded Oct 25, 2026. Full review
BenchCoded LabTest receipt

Cursor13 (partial)

Works
3/30
Time
0/15
Bugs
0/15
Design
0/15
Deploy
0/15
Cost
10/10
Prompt
SlotKeeper, word for word
Prompts sent
1 (no fix prompts)
Time to working version
Didn't finish
Human minutes
Not recorded (protocol v1)
Checks
1 verified
Bugs
not tested
Plan
Free · weekly limit hit
Cost
$0
More receipt fields
Receipt ID
BC-SK1-CURSOR
Status
Published · TESTED
Protocol
v1: free plan, no baseline
Tool
Cursor
Benchmark
SlotKeeper booking app
Date
Oct 22, 2026
Plan in full
Free
Model
Default
Cost basis
Usage $0; weekly free allowance used up
Relationships
None
Retest due
Dec 21, 2026