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+    "started_at": "2026-01-30T00:07:07Z",
+    "updated_at": "2026-01-30T00:09:22Z",
+    "job_id": 37319,
+    "duration_seconds": 135
+  },
+  {
+    "language": "v",
+    "status": "Passed",
+    "queued_duration": 143.292797,
+    "started_at": "2026-01-30T00:04:39Z",
+    "updated_at": "2026-01-30T00:06:50Z",
+    "job_id": 37304,
+    "duration_seconds": 131
+  },
+  {
+    "language": "cpp",
+    "status": "Passed",
+    "queued_duration": 69.996313,
+    "started_at": "2026-01-30T00:11:28Z",
+    "updated_at": "2026-01-30T00:13:39Z",
+    "job_id": 37353,
+    "duration_seconds": 131
+  },
+  {
+    "language": "objc",
+    "status": "Failed",
+    "queued_duration": 84.356585,
+    "started_at": "2026-01-30T00:08:10Z",
+    "updated_at": "2026-01-30T00:10:21Z",
+    "job_id": 37333,
+    "duration_seconds": 131
+  },
+  {
+    "language": "powershell",
+    "status": "Failed",
+    "queued_duration": 173.443511,
+    "started_at": "2026-01-30T00:07:24Z",
+    "updated_at": "2026-01-30T00:09:31Z",
+    "job_id": 37324,
+    "duration_seconds": 127
+  },
+  {
+    "language": "d",
+    "status": "Failed",
+    "queued_duration": 121.054152,
+    "started_at": "2026-01-30T00:08:53Z",
+    "updated_at": "2026-01-30T00:10:59Z",
+    "job_id": 37334,
+    "duration_seconds": 126
+  },
+  {
+    "language": "dart",
+    "status": "Failed",
+    "queued_duration": 155.333638,
+    "started_at": "2026-01-30T00:09:49Z",
+    "updated_at": "2026-01-30T00:11:54Z",
+    "job_id": 37339,
+    "duration_seconds": 125
+  },
+  {
+    "language": "prolog",
+    "status": "Passed",
+    "queued_duration": 273.507249,
+    "started_at": "2026-01-30T00:06:50Z",
+    "updated_at": "2026-01-30T00:08:53Z",
+    "job_id": 37313,
+    "duration_seconds": 123
+  },
+  {
+    "language": "ruby",
+    "status": "Passed",
+    "queued_duration": 4.151528,
+    "started_at": "2026-01-30T00:02:17Z",
+    "updated_at": "2026-01-30T00:04:18Z",
+    "job_id": 37275,
+    "duration_seconds": 121
+  },
+  {
+    "language": "python",
+    "status": "Passed",
+    "queued_duration": 2.217701,
+    "started_at": "2026-01-30T00:02:15Z",
+    "updated_at": "2026-01-30T00:04:14Z",
+    "job_id": 37272,
+    "duration_seconds": 119
+  },
+  {
+    "language": "ocaml",
+    "status": "Failed",
+    "queued_duration": 147.370386,
+    "started_at": "2026-01-30T00:09:22Z",
+    "updated_at": "2026-01-30T00:11:18Z",
+    "job_id": 37335,
+    "duration_seconds": 116
+  },
+  {
+    "language": "bash",
+    "status": "Passed",
+    "queued_duration": 6.13303,
+    "started_at": "2026-01-30T00:02:20Z",
+    "updated_at": "2026-01-30T00:04:15Z",
+    "job_id": 37279,
+    "duration_seconds": 115
+  },
+  {
+    "language": "csharp",
+    "status": "Failed",
+    "queued_duration": 155.644364,
+    "started_at": "2026-01-30T00:09:41Z",
+    "updated_at": "2026-01-30T00:11:33Z",
+    "job_id": 37337,
+    "duration_seconds": 112
+  },
+  {
+    "language": "fortran",
+    "status": "Failed",
+    "queued_duration": 147.630709,
+    "started_at": "2026-01-30T00:09:31Z",
+    "updated_at": "2026-01-30T00:11:18Z",
+    "job_id": 37336,
+    "duration_seconds": 107
+  }
+]
+}
diff --git a/reports/4.2.50/perf.md b/reports/4.2.50/perf.md
new file mode 100644
index 0000000..c14e646
--- /dev/null
+++ b/reports/4.2.50/perf.md
@@ -0,0 +1,167 @@
+# Performance Report: 4.2.50
+
+**Generated:** 2026-01-30T00:20:38Z
+**Pipeline:** [#13622](https://git.unturf.com/engineering/unturf/un-inception/-/pipelines/13622)
+
+## Summary
+
+| Metric | Value |
+|--------|-------|
+| Total Tests | 860 |
+| Passed | 800 |
+| Failed | 60 |
+| Pass Rate | 93.0% |
+| Languages | 43 |
+| Avg Duration | 183s |
+| Slowest | go (480s) |
+| Fastest | fortran (107s) |
+
+---
+
+## API Health
+
+Tracks transient errors encountered during test execution. Tests retry on failures to ensure accurate results.
+
+| Metric | Value |
+|--------|-------|
+| Health Score | 0/100 |
+| Total Retries | 58 |
+| Rate Limit (429) | 0 |
+| Server Error (5xx) | 58 |
+| Timeout | 0 |
+| Connection | 0 |
+| Tests Needing Retries | 78 |
+
+**Interpretation:**
+- **Score 95-100:** API is healthy, minimal transient errors
+- **Score 80-94:** Some API instability, but tests recovered via retry
+- **Score < 80:** Significant API issues affecting test reliability
+
+---
+
+## Test Duration by Language
+
+The primary performance metric - how long each language takes to run its full test suite (15 tests per language).
+
+![Duration by Language](chart-duration-by-language.png)
+
+**Key observations:**
+- **GO** and **GROOVY** are outliers at 90+ seconds
+- Most languages cluster between 20-40 seconds
+- Compiled languages (red) tend to be faster than interpreted (blue)
+- **FORTRAN** is the fastest at 107 seconds
+
+---
+
+## Compiled vs Interpreted
+
+Comparing performance between compiled languages (C, Go, Rust, etc.) and interpreted languages (Python, Ruby, JavaScript, etc.).
+
+![Category Comparison](chart-category-comparison.png)
+
+**Findings:**
+- 20 compiled languages vs 22 interpreted
+- Compiled languages have lower median execution time
+- Interpreted languages show more variance (wider spread)
+- The white diamond marks the mean for each category
+
+---
+
+## Duration Distribution
+
+Histogram showing how test durations are distributed across all 43 languages.
+
+![Duration Histogram](chart-duration-histogram.png)
+
+**Distribution analysis:**
+- Most languages complete in 20-35 seconds (the peak)
+- Mean (green dashed) and median (blue dotted) are close together
+- Long tail on the right from slow outliers (go, groovy)
+
+---
+
+## Speed Leaders
+
+Side-by-side comparison of the 10 slowest and 10 fastest languages.
+
+![Speed Leaders](chart-speed-leaders.png)
+
+**Slowest (left):** GO, GROOVY, AWK, JAVASCRIPT, ERLANG
+**Fastest (right):** FORTRAN, CSHARP, BASH, OCAML, PYTHON
+
+---
+
+## Queue vs Execution Time
+
+Scatter plot showing the relationship between CI queue wait time and actual test execution time.
+
+![Queue vs Execution](chart-queue-vs-execution.png)
+
+**Notes:**
+- Queue time is how long the job waited for a runner
+- Most jobs had similar queue times (clustered vertically)
+- Outliers labeled - go and groovy took longest to execute regardless of queue time
+
+---
+
+## Dashboard
+
+Summary dashboard combining key metrics and visualizations.
+
+![Dashboard](chart-dashboard.png)
+
+---
+
+## Raw Data
+
+### Per-Language Performance
+
+| Language | Status | Duration |
+|----------|--------|----------|
+| go | Failed | 480s |
+| groovy | Failed | 253s |
+| awk | Failed | 243s |
+| javascript | Failed | 241s |
+| erlang | Failed | 241s |
+| rust | Failed | 233s |
+| crystal | Failed | 229s |
+| lua | Failed | 228s |
+| r | Failed | 223s |
+| perl | Failed | 221s |
+| typescript | Failed | 220s |
+| elixir | Failed | 218s |
+| cobol | Failed | 217s |
+| c | Failed | 215s |
+| zig | Failed | 207s |
+| java | Failed | 195s |
+| clojure | Failed | 193s |
+| forth | Failed | 191s |
+| php | Failed | 189s |
+| fsharp | Failed | 189s |
+| haskell | Failed | 183s |
+| nim | Failed | 179s |
+| kotlin | Failed | 179s |
+| deno | Failed | 174s |
+| raku | Failed | 173s |
+| julia | Failed | 173s |
+| dotnet | Failed | 160s |
+| scheme | Failed | 157s |
+| tcl | Failed | 152s |
+| commonlisp | Failed | 135s |
+| v | Passed | 131s |
+| cpp | Passed | 131s |
+| objc | Failed | 131s |
+| powershell | Failed | 127s |
+| d | Failed | 126s |
+| dart | Failed | 125s |
+| prolog | Passed | 123s |
+| ruby | Passed | 121s |
+| python | Passed | 119s |
+| ocaml | Failed | 116s |
+| bash | Passed | 115s |
+| csharp | Failed | 112s |
+| fortran | Failed | 107s |
+
+---
+
+*Report generated by UN Inception CI pipeline*
diff --git a/reports/PERFORMANCE-HISTORY.md b/reports/PERFORMANCE-HISTORY.md
index b0ef3ae..316aa6d 100644
--- a/reports/PERFORMANCE-HISTORY.md
+++ b/reports/PERFORMANCE-HISTORY.md
@@ -41,3 +41,4 @@ Tracking compile and test execution times across releases.
 | 4.2.37 | 2026-01-29 | 812 | 88.4% | 267s | rust | powershell |
 | 4.2.38 | 2026-01-29 | 832 | 90.8% | 396s | php | awk |
 | 4.2.46 | 2026-01-29 | 860 | 93.2% | 224s | raku | prolog |
+| 4.2.50 | 2026-01-30 | 860 | 93.0% | 183s | go | fortran |