StealthNot designated as open-weight in LiveBench metadata

Union Alpha

Model profile and sourced results included in the Kronos AI Index. Snapshot values are frozen at the calculation time shown below.

Performance data source: LiveBench. Kronos compares the seven category scores with the highest model LiveBench designates open-weight in each category.

Last LiveBench check: Oct 11, 2026, 12:47 PM UTC · Data status: Current

Open Frontier Delta

Insufficient coverage

LiveBench percentage points relative to the LiveBench-designated open-weight frontier.

Coverage

0%

Insufficient coverage

LiveBench Overall

Not provided

Source reference; not the Kronos headline metric.

Evidence Confidence

Insufficient evidence

Separate from coverage; based on the evidence rubric.

Methodology version

1.3.0

Calculated Oct 8, 2026, 1:27 PM UTC

Weights

Not designated as open-weight in LiveBench metadata

Model listing status: active.

Insufficient coverage. This snapshot has comparable model and LiveBench-designated open-weight scores in 0 of 7 categories. Available scores are shown below; missing categories are not treated as zero.

LiveBench category deltas

LiveBench category scores and differences from the LiveBench-designated open-weight frontier
CategoryModel scoreOpen-weight baselineCategory deltaSubtasks
ReasoningNot reportedKimi K390.67%Insufficient evidence0 / 4
CodingNot reportedSmaug Agentic82.47%Insufficient evidence0 / 2
Agentic CodingNot reportedDeepSeek V4.1 Flash Max Effort · 2026-09-1077.27%Insufficient evidence0 / 3
MathematicsNot reportedDeepSeek V4 Pro 081395.09%Insufficient evidence0 / 4
Data AnalysisNot reportedSmaug Agentic79.9%Insufficient evidence0 / 3
LanguageNot reportedKimi K385.53%Insufficient evidence0 / 3
Instruction FollowingNot reportedQwen 3.8 Flash Next77.11%Insufficient evidence0 / 4

LiveBench release 2026-06-25 · commit 85d7d7eed2c6ab9d8e0f372325d07bd56ae94360 · checked Oct 8, 2026, 1:27 PM UTC · model metadata SHA-256 3dd8e7c7ce7e3f29faf61944b13067d70735986f69647452112f9257608d5ffb.

Model metadata

Provider
Stealth
Open-weight verification
Not designated by LiveBench
License
Not provided
Release date
Not provided
Context window
Not provided
Input price
Not provided / 1M tokens
Output price
Not provided / 1M tokens
Output speed
Not provided
Median time to first token
Not provided
Reasoning mode
Not provided

Automatically imported from LiveBench release 2026-06-25. Baseline eligibility follows the release-pinned LiveBench openweight flag; independent model-license verification remains unverified.

Benchmark contributions and open-weight baselines

Category score details are shown in the LiveBench category table above.

Archived v1.1 Artificial Analysis evidence

No supporting Artificial Analysis evidence is recorded in this snapshot.

Excluded benchmarks

No benchmark exclusions are recorded in this snapshot.

Score history

Immutable Open Frontier Delta and historical Frontier Uplift snapshots over time
Snapshot timeMethodMetricCoverageConfidence
Oct 8, 2026, 1:27 PM UTC1.3.0Insufficient evidence0%Insufficient evidence
Oct 7, 2026, 1:21 PM UTC1.3.0Insufficient evidence0%Insufficient evidence
Oct 6, 2026, 9:16 AM UTC1.3.0Insufficient evidence0%Insufficient evidence
Sep 25, 2026, 2:12 PM UTC1.3.0-7.9 pp100%100

Sources and provenance

Model and weight provenance, pinned LiveBench release files, and any historical evidence links are listed here.

AGI Capability Beta

Insufficient evidence

Breadth, depth, reliability, autonomy, adaptation, and robustness are not combined into a score in this release.

  • BreadthInsufficient evidence
  • DepthInsufficient evidence
  • ReliabilityInsufficient evidence
  • AutonomyInsufficient evidence
  • AdaptationInsufficient evidence
  • RobustnessInsufficient evidence

Methodology and limitations