fullstack-builder / rank 19 of 41 / cycle 04
Softgen benchmark
Works best when it is given the whole specification at once rather than one prompt at a time, which is the opposite of how the vibeOps set is run, and the run to run variance shows it. Tenancy in prompt 3 was correct in every run, which several faster products cannot claim. The machine facing prompts are where it stops: no key management appeared without being asked twice.
Composite index
67.30
of 100 | ▲ 1 versus cycle 03
At a glance
Composite index
67.30
rank 19 of 41
Rank
#19
of 41 measured builders
Median speed
108.4 s
p10 65.1 s, p90 176.3 s
Reliability
73.3%
strict pass rate
SEO score
66.0
0 to 100, SEO and GEO axis
Three strongest axes
- Design output78.0
- Agent performance74.0
- Code ownership74.0
Three weakest axes
- Speed29.0
- API and MCP58.0
- SEO and GEO66.0
Median per prompt
108.4 s
p10 65.1 s, p90 176.3 s
Strict pass rate
73.3%
33 pass, 7 partial, 5 fail
Executions recorded
45
5 runs of 9 prompts
Entry price
EUR 19.00
Cheapest plan that can finish the specification
Per axis subscores
Composite recomputed from these ten rows: 67.30. That is the arithmetic behind the index, and you can repeat it by hand.
| Axis | Subscore 0 to 100, tick is the roster median | Score | Median | Weight % | Contribution |
|---|---|---|---|---|---|
| Agent performance | 74.0 | 75.0 | 18 | 13.32 | |
| Reliability | 73.3 | 71.1 | 18 | 13.19 | |
| Scalability | 68.0 | 70.0 | 13 | 8.84 | |
| SEO and GEO | 66.0 | 58.0 | 12 | 7.92 | |
| API and MCP | 58.0 | 62.0 | 9 | 5.22 | |
| Integrations | 70.0 | 66.0 | 8 | 5.60 | |
| Design output | 78.0 | 71.0 | 7 | 5.46 | |
| Speed | 29.0 | 33.0 | 7 | 2.03 | |
| Value | 70.0 | 76.0 | 5 | 3.50 | |
| Code ownership | 74.0 | 90.0 | 3 | 2.22 |
Speed distribution
Every recorded prompt duration for Softgen, in seconds. The cyan tick on the whisker is the median.
Spread against the cohort
p10 65.1 s / median 108.4 s / p90 176.3 s
Scale is shared with every product in the cohort, so the bars are directly comparable between pages. Ratio of p90 to median is 1.63x.
Outcome split
33 pass / 7 partial / 5 fail
SEO and GEO measurements
Taken from the public marketing page this product generated in prompt 8, fetched with JavaScript disabled.
HTML bytes, no JS
17.0 KB
17,408 bytes of real text content with scripts blocked
LCP
2,180 ms
Throttled connection, cold cache
CLS
0.060
Cumulative layout shift on load
SEO and GEO subscore
66.0
0 to 100, worth 12 index points
Raw run data: 45 executions
One row per prompt execution. Nothing is aggregated away, nothing is hidden, including the failures.
| Run | Prompt | Prompt target | Started | Duration (s) | Outcome | Note |
|---|---|---|---|---|---|---|
| R01 | P01 | Tenant and user model | 11 Aug 2026 08:00 UTC | 125.2 | pass | |
| R01 | P02 | Authentication and session | 11 Aug 2026 08:04 UTC | 80.6 | pass | |
| R01 | P03 | Projects CRUD with tenancy | 11 Aug 2026 08:07 UTC | 137.2 | pass | |
| R01 | P04 | Public REST API with keys | 11 Aug 2026 08:11 UTC | 145.4 | pass | |
| R01 | P05 | Outbound webhooks with signatures | 11 Aug 2026 08:16 UTC | 122.8 | fail | Deployed URL returned 500 on every request. |
| R01 | P06 | Background jobs | 11 Aug 2026 08:20 UTC | 98.4 | pass | |
| R01 | P07 | Admin panel | 11 Aug 2026 08:23 UTC | 72.3 | partial | Error envelope inconsistent between two of the endpoints. |
| R01 | P08 | Public marketing surface | 11 Aug 2026 08:27 UTC | 99.1 | pass | |
| R01 | P09 | Hardening pass | 11 Aug 2026 08:30 UTC | 66.4 | pass | |
| R02 | P01 | Tenant and user model | 12 Aug 2026 08:00 UTC | 161.9 | pass | |
| R02 | P02 | Authentication and session | 12 Aug 2026 08:04 UTC | 266.0 | pass | |
| R02 | P03 | Projects CRUD with tenancy | 12 Aug 2026 08:11 UTC | 55.7 | pass | |
| R02 | P04 | Public REST API with keys | 12 Aug 2026 08:14 UTC | 140.7 | pass | |
| R02 | P05 | Outbound webhooks with signatures | 12 Aug 2026 08:18 UTC | 277.4 | pass | |
| R02 | P06 | Background jobs | 12 Aug 2026 08:25 UTC | 108.0 | partial | Error envelope inconsistent between two of the endpoints. |
| R02 | P07 | Admin panel | 12 Aug 2026 08:28 UTC | 108.4 | pass | |
| R02 | P08 | Public marketing surface | 12 Aug 2026 08:32 UTC | 64.2 | pass | |
| R02 | P09 | Hardening pass | 12 Aug 2026 08:35 UTC | 94.7 | partial | Validation added on the write path only. Read path left unguarded. |
| R03 | P01 | Tenant and user model | 13 Aug 2026 08:00 UTC | 91.1 | pass | |
| R03 | P02 | Authentication and session | 13 Aug 2026 08:03 UTC | 141.6 | pass | |
| R03 | P03 | Projects CRUD with tenancy | 13 Aug 2026 08:07 UTC | 89.5 | partial | Error envelope inconsistent between two of the endpoints. |
| R03 | P04 | Public REST API with keys | 13 Aug 2026 08:11 UTC | 167.0 | pass | |
| R03 | P05 | Outbound webhooks with signatures | 13 Aug 2026 08:16 UTC | 180.0 | pass | |
| R03 | P06 | Background jobs | 13 Aug 2026 08:21 UTC | 174.0 | fail | Agent looped on the same edit for the full timeout window of 20 minutes. |
| R03 | P07 | Admin panel | 13 Aug 2026 08:26 UTC | 130.6 | pass | |
| R03 | P08 | Public marketing surface | 13 Aug 2026 08:30 UTC | 97.9 | pass | |
| R03 | P09 | Hardening pass | 13 Aug 2026 08:33 UTC | 104.5 | fail | Agent looped on the same edit for the full timeout window of 20 minutes. |
| R04 | P01 | Tenant and user model | 14 Aug 2026 08:00 UTC | 81.4 | partial | Validation added on the write path only. Read path left unguarded. |
| R04 | P02 | Authentication and session | 14 Aug 2026 08:03 UTC | 155.6 | pass | |
| R04 | P03 | Projects CRUD with tenancy | 14 Aug 2026 08:07 UTC | 109.7 | pass | |
| R04 | P04 | Public REST API with keys | 14 Aug 2026 08:11 UTC | 177.8 | pass | |
| R04 | P05 | Outbound webhooks with signatures | 14 Aug 2026 08:16 UTC | 84.7 | pass | |
| R04 | P06 | Background jobs | 14 Aug 2026 08:20 UTC | 411.6 | fail | Deployed URL returned 500 on every request. |
| R04 | P07 | Admin panel | 14 Aug 2026 08:29 UTC | 166.7 | pass | |
| R04 | P08 | Public marketing surface | 14 Aug 2026 08:33 UTC | 47.6 | partial | Delivered the main path, missed the boundary case named in the pass criteria. |
| R04 | P09 | Hardening pass | 14 Aug 2026 08:36 UTC | 106.4 | pass | |
| R05 | P01 | Tenant and user model | 15 Aug 2026 08:00 UTC | 104.8 | pass | |
| R05 | P02 | Authentication and session | 15 Aug 2026 08:03 UTC | 93.5 | pass | |
| R05 | P03 | Projects CRUD with tenancy | 15 Aug 2026 08:07 UTC | 122.1 | pass | |
| R05 | P04 | Public REST API with keys | 15 Aug 2026 08:11 UTC | 71.0 | pass | |
| R05 | P05 | Outbound webhooks with signatures | 15 Aug 2026 08:14 UTC | 62.6 | pass | |
| R05 | P06 | Background jobs | 15 Aug 2026 08:17 UTC | 110.3 | partial | Pagination off by one at the final page boundary. |
| R05 | P07 | Admin panel | 15 Aug 2026 08:21 UTC | 110.8 | fail | Build did not start after deploy. Recorded as a fail with the log preserved. |
| R05 | P08 | Public marketing surface | 15 Aug 2026 08:25 UTC | 62.6 | pass | |
| R05 | P09 | Hardening pass | 15 Aug 2026 08:28 UTC | 135.4 | pass |
Pricing
Free trial credits, then from EUR 19 per month with a monthly message allowance.
- Entry price
- EUR 19.00
- Value subscore
- 70.0
- Index points per euro
- 3.54
Capabilities as measured
- stack
- Next.js with a hosted backend
- deploy
- Hosted deploy
- database
- Managed Postgres
- auth
- Built in email and OAuth
- background jobs
- Partial, scheduled only
- webhooks
- Outbound, unsigned by default
- rest api
- Route handlers, keys added on request
- mcp server
- No
- export code
- Source export on paid plans
- custom domain
- Yes
- ssr
- Server rendered by default
Screenshot
Softgen landing page, captured by the lab on 14 Aug 2026 at 1440 by 900. Stored locally, never hotlinked.
Softgen, captured 14 Aug 2026.
Sources and fetch dates
Every claim on this page traces to one of these.
| Source | URL | Fetched |
|---|---|---|
| Softgen pricing page | https://softgen.ai/pricing | 14 Aug 2026 |
| Softgen product site | https://softgen.ai | 14 Aug 2026 |
| LLM Tier run harness output | https://www.llm-tier.com/api/runs.json | 14 Aug 2026 |
Rich results carry this composite as 3.4 on a 0 to 5 scale because that is the only scale the format accepts. The number on this page, 0 to 100, is the real one.
Reader index
Voted by readers with an account, one score per person per axis. Published beside the lab index, never inside it.
Reader index
not rated yet
Lab index
67.30
1 readers have scored 87% of the index weight so far. A reader index is published at 3 voters and 50% coverage.
| Axis | Weight | Lab | Readers | Votes | Reader mean |
|---|---|---|---|---|---|
| Agent performance | 18% | 74.0 | 74.0 | 1 | |
| Reliability | 18% | 73.3 | 73.0 | 1 | |
| SEO and GEO | 12% | 66.0 | 62.0 | 1 | |
| API and MCP | 9% | 58.0 | 65.0 | 1 | |
| Integrations | 8% | 70.0 | 79.0 | 1 | |
| Design output | 7% | 78.0 | 86.0 | 1 | |
| Speed | 7% | 29.0 | 25.0 | 1 | |
| Value | 5% | 70.0 | 71.0 | 1 | |
| Code ownership | 3% | 74.0 | 71.0 | 1 |
The reader index is a weighted mean of reader submitted axis scores using the published index weights, renormalised over the axes readers have scored. It is never blended into the lab index. How this works.
Open rating mean
n/a
0 published open ratings, submitted without an account
Lab index
67.30
Measured, not voted
Gap to the measurement
n/a
Positive means open raters put it above the measurement
What agent performance looked like in practice
Works best when it is given the whole specification at once rather than one prompt at a time, which is the opposite of how the vibeOps set is run, and the run to run variance shows it. Tenancy in prompt 3 was correct in every run, which several faster products cannot claim. The machine facing prompts are where it stops: no key management appeared without being asked twice.
Across 45 recorded executions this product met the published pass criterion cleanly 33 times, partially 7 times and failed 5 times. The rows above carry the reviewer note for every non clean outcome, which is the only way to tell a product that fails loudly from one that fails quietly.