# Laya benchmarks

Every checkpoint answered **byte-identical questions** in each run (fixed seed). Jev figures are **third-party published, never measured here** — no TypeSafe API access — so sample sizes and prompts differ; treat them as indicative.

| run | what | where |
|---|---|---|
| T4 Colab | typed-decisions, MASSIVE (14 langs), XNLI (15 langs), English suites, latency, option-order robustness, calibration repair | `research/results/t4_colab_benchmark.json` |
| CPU sweep | MASSIVE intent across **all 51 languages**, typed-decisions on all three checkpoints | `research/results/cpu_51_language_sweep.json` |
| Applications | the six workflow themes + the datasets where Jev numbers exist, all three checkpoints | `research/results/app_benchmark.json` |

---

## Headline

| | Laya | Jev (published) |
|---|---|---|
| typed-decisions (2,000 decisions) | **0.766** | 0.727 |
| AG News (4 labels) | **0.953** | 0.910 |
| DAIR Emotion (6 labels) | **0.600** | 0.480 |
| ECE after temperature fitting | **0.081** | 0.246 |
| p50 latency, 1 question (T4) | **32.8 ms** | 236-276 ms |

---

## Languages

### All 51 MASSIVE languages — intent, 20 options (random = 0.050)

| | laya | laya-multilingual |
|---|---|---|
| macro accuracy | 0.2269 | **0.3661** |
| macro ECE *(lower better)* | 0.7331 | **0.3869** |
| languages clearing 3× random | 23 / 51 | **45 / 51** |

<details><summary><b>Per language (51)</b> — sorted by how much routing gains</summary>

| lang | laya | laya-multilingual | Δ | laya ECE | multilingual ECE |
|---|---|---|---|---|---|
| `th` | 0.080 | 0.480 | +0.400 | 0.881 | 0.336 |
| `ko` | 0.110 | 0.450 | +0.340 | 0.850 | 0.329 |
| `he` | 0.060 | 0.400 | +0.340 | 0.911 | 0.350 |
| `ur` | 0.070 | 0.400 | +0.330 | 0.883 | 0.311 |
| `hi` | 0.100 | 0.430 | +0.330 | 0.850 | 0.321 |
| `ar` | 0.110 | 0.400 | +0.290 | 0.800 | 0.341 |
| `pl` | 0.240 | 0.510 | +0.270 | 0.713 | 0.350 |
| `el` | 0.130 | 0.380 | +0.250 | 0.839 | 0.383 |
| `fa` | 0.140 | 0.390 | +0.250 | 0.820 | 0.399 |
| `ru` | 0.310 | 0.540 | +0.230 | 0.668 | 0.316 |
| `tr` | 0.140 | 0.370 | +0.230 | 0.788 | 0.417 |
| `lv` | 0.100 | 0.320 | +0.220 | 0.847 | 0.480 |
| `bn` | 0.080 | 0.290 | +0.210 | 0.865 | 0.408 |
| `nb` | 0.330 | 0.530 | +0.200 | 0.648 | 0.327 |
| `vi` | 0.060 | 0.260 | +0.200 | 0.891 | 0.521 |
| `az` | 0.100 | 0.300 | +0.200 | 0.825 | 0.368 |
| `hu` | 0.090 | 0.290 | +0.200 | 0.857 | 0.422 |
| `is` | 0.110 | 0.300 | +0.190 | 0.835 | 0.469 |
| `sv` | 0.380 | 0.570 | +0.190 | 0.596 | 0.276 |
| `km` | 0.000 | 0.180 | +0.180 | 0.952 | 0.412 |
| `ml` | 0.070 | 0.240 | +0.170 | 0.857 | 0.414 |
| `it` | 0.340 | 0.500 | +0.160 | 0.647 | 0.302 |
| `fi` | 0.130 | 0.290 | +0.160 | 0.849 | 0.436 |
| `ms` | 0.270 | 0.430 | +0.160 | 0.688 | 0.392 |
| `da` | 0.350 | 0.500 | +0.150 | 0.626 | 0.263 |
| `id` | 0.360 | 0.510 | +0.150 | 0.613 | 0.305 |
| `te` | 0.090 | 0.220 | +0.130 | 0.858 | 0.370 |
| `sl` | 0.200 | 0.330 | +0.130 | 0.756 | 0.433 |
| `jv` | 0.160 | 0.270 | +0.110 | 0.803 | 0.506 |
| `ta` | 0.120 | 0.230 | +0.110 | 0.822 | 0.397 |
| `ja` | 0.530 | 0.640 | +0.110 | 0.460 | 0.228 |
| `hy` | 0.050 | 0.150 | +0.100 | 0.835 | 0.506 |
| `zh-TW` | 0.460 | 0.540 | +0.080 | 0.520 | 0.327 |
| `de` | 0.420 | 0.500 | +0.080 | 0.558 | 0.301 |
| `tl` | 0.290 | 0.360 | +0.070 | 0.676 | 0.374 |
| `nl` | 0.390 | 0.450 | +0.060 | 0.591 | 0.378 |
| `af` | 0.290 | 0.350 | +0.060 | 0.687 | 0.484 |
| `my` | 0.060 | 0.120 | +0.060 | 0.861 | 0.455 |
| `sq` | 0.210 | 0.260 | +0.050 | 0.755 | 0.476 |
| `sw` | 0.130 | 0.180 | +0.050 | 0.828 | 0.549 |
| `cy` | 0.120 | 0.160 | +0.040 | 0.841 | 0.591 |
| `kn` | 0.110 | 0.150 | +0.040 | 0.842 | 0.437 |
| `es` | 0.510 | 0.530 | +0.020 | 0.480 | 0.275 |
| `ka` | 0.090 | 0.110 | +0.020 | 0.845 | 0.528 |
| `ro` | 0.330 | 0.350 | +0.020 | 0.658 | 0.404 |
| `zh-CN` | 0.620 | 0.630 | +0.010 | 0.376 | 0.212 |
| `am` | 0.120 | 0.110 | -0.010 | 0.825 | 0.463 |
| `pt` | 0.470 | 0.450 | -0.020 | 0.512 | 0.342 |
| `mn` | 0.130 | 0.100 | -0.030 | 0.837 | 0.558 |
| `fr` | 0.590 | 0.540 | -0.050 | 0.388 | 0.277 |
| `en` | 0.820 | 0.680 | -0.140 | 0.179 | 0.209 |

</details>

### English vs the rest

| task | | laya | laya-multilingual |
|---|---|---|---|
| MASSIVE intent — English | **0.783** | 0.657 |
| MASSIVE intent — other languages | 0.306 | **0.451** |
| MASSIVE scenario — English | **0.603** | 0.560 |
| MASSIVE scenario — other languages | 0.281 | **0.439** |
| XNLI — English | **0.860** | 0.843 |
| XNLI — other languages | 0.521 | **0.731** |

The English checkpoint does not degrade gracefully outside English — it collapses, and stays confident doing so. Khmer: **0.000 accuracy at 0.952 confidence**. Its mean confidence never drops below 0.885 at any accuracy level, so confidence gating cannot catch it — which is why routing happens *before* the forward pass.

---

## Themes — the application workflows

Each is real labelled data, 400 cases, all three checkpoints. *held out* means the source was **not** in Laya's training mix.

| theme | laya | laya-multilingual | laya-typed-decisions | data |
|---|---|---|---|---|
| Email spam | **0.993** | 0.993 | 0.958 | in training |
| Phishing | 0.980 | **0.993** | 0.940 | in training |
| LLM guardrails (jailbreak) | 0.708 | 0.755 | **0.762** | **held out** |
| Moderation (toxicity) | **0.530** | 0.525 | 0.530 | **held out** |
| RAG passage relevance | 0.625 | **0.657** | 0.625 | in training |
| Support triage (10-way queue) | 0.502 | **0.522** | 0.505 | in training |
| Model routing (domain) | 0.639 | 0.123 | **0.659** | held out |

**Where it is strong:** email spam 0.993 and phishing 0.993, both with ECE around 0.01 — production-grade, though both were in the training mix.

**Where it is weak:** moderation on held-out toxic-chat is 0.530 with macro-F1 0.400 — barely above chance on a balanced split. The demo Space has a Moderation tab; hand-picked examples work, real traffic does not. Guardrails at 0.708–0.762 is the honest jailbreak-detection number, consistent across two unrelated datasets (deepset prompt-injections measured 0.698 separately).

### On the public datasets where Jev numbers exist

| dataset | laya | laya-multilingual | laya-typed-decisions | Jev (published) |
|---|---|---|---|---|
| AG News (4 labels) | 0.950 | 0.930 | **0.953** | 0.910 |
| DAIR Emotion (6 labels) | 0.595 | 0.530 | **0.600** | 0.480 |
| banking77 (77 labels) | 0.425 | 0.425 | **0.492** | 0.870 |

banking77 is the one clear loss, and it is architectural: a choice question's options share a fixed `head_max_len` budget, so 77 labels get roughly 4 tokens each and stop being distinguishable. Both checkpoints score **exactly 0.425**, which is what you would expect from a budget ceiling rather than a capability gap. Keep choice questions under ~20 options.

---

## typed-decisions — 400 cases, 2,000 decisions

| model | accuracy | soft acc | Brier | ECE | score MAE |
|---|---|---|---|---|---|
| `laya-typed-decisions` | **0.766** | 0.471 | 0.061 | 0.213 | 0.242 |
| `laya` | 0.361 | 0.332 | 0.316 | 0.175 | 0.694 |
| `laya-multilingual` | 0.342 | 0.326 | 0.439 | 0.285 | 0.687 |
| *Jev 1.13.0 (published)* | *0.727* | *0.580* | *0.148* | *0.144* | *0.391* |
| *teacher ceiling* | *0.735* | *—* | *—* | *—* | *—* |
| *majority class* | *0.461* | *—* | *—* | *—* | *—* |
| *random guess* | *0.318* | *—* | *—* | *—* | *—* |

| workflow | laya-typed-decisions |
|---|---|
| agent trace observability | 0.730 |
| customer service | 0.764 |
| invoice processing | 0.804 |
| security incidents | 0.766 |

**The base checkpoints sit below the majority-class baseline** (0.362 and 0.342 against 0.461). All of the capability on this benchmark comes from fine-tuning.

---

## Speed (Tesla T4)

| questions per call | laya | laya-multilingual |
|---|---|---|
| 1 | 39.5 ms | **32.8 ms** |
| 5 | 84.5 ms | **40.1 ms** |
| 10 | 158.6 ms | **72.3 ms** |
| 50 | 771.3 ms | **337.4 ms** |

103–332 questions/sec batched. Jev independently measured at 236-276 ms p50, so Laya answers one question roughly **6–7× faster**.

### Calibration

| | as shipped | temperature refit | 
|---|---|---|
| `laya` | 0.466 | **0.081** |
| `laya-multilingual` | 0.314 | **0.106** |

Both ship over-confident; `laya-multilingual` ships with no fitted temperatures at all. Refitting one temperature per (question type, option count) on held-out data is the single highest-value fix available, and takes ECE below Jev's measured 0.246.

### Option-order robustness

How often the answer changes when the options are permuted. Jev measured at 0.13.

| suite | laya | laya-multilingual |
|---|---|---|
| massive_intent.en | 0.150 | 0.230 |
| en.emotion | 0.040 | 0.090 |
| xnli.en | 0.000 | 0.015 |

At 20 options both are less order-stable than Jev — worth fixing with more aggressive option-order shuffling during training.

---

## Limits, stated plainly

- **Near chance on typed-decisions zero-shot** — the 0.766 belongs to the fine-tuned checkpoint, on that benchmark's own training split.
- **Moderation does not hold up on held-out data** (0.530, macro-F1 0.400).
- **Keep `choice` questions under ~20 options.**
- **Both checkpoints ship over-confident.** Fit temperatures on your own data.
- **Ordinal `score` is the weakest primitive** (SST-5 0.372).
- `laya` collapses outside English; `laya-multilingual` is weaker on English. Route.