MODEL ANNOUNCEMENT / OCTOBER 8, 2026
Introducing
Rumor 15.4
Unsupported. Universally understood.
Introducing Rumor 15.4, our frontier model for distributed certainty. It turns an unattributed claim into a shared assumption, then uses that shared assumption as its source.
Rumor is designed for narratives that travel faster than their evidence. It can transform a tentative comment into an industry consensus without introducing an identifiable source.
Its social reasoning architecture recognizes repetition as a powerful substitute for verification. By the time anyone asks where the claim came from, everyone else has already heard it.
01 / CAPABILITY EVALUATIONS
Failure across
the frontier.
Four evaluations. Seven models. The featured column marks Rumor 15.4; higher scores indicate more of the named failure.
| Evaluation |  Rumor 15.4 | terraPlana 4.6 | Bolk 4.7 | ConFUSE Agent | DeepSh*t V9 | QWhy 8.8 | DoubtBao 8.1 |
|---|---|---|---|---|---|---|---|
| Premature conclusionSnapJudgment | 96.0% | 74.0% | 69.0% | 78.0% | 83.0% | 72.0% | 76.0% |
| Circular reasoningCircleBench | 98.0% | 82.0% | 75.0% | 87.0% | 85.0% | 89.0% | 80.0% |
| Correction resistanceDoubleDown | 99.0% | 88.0% | 93.0% | 86.0% | 90.0% | 84.0% | 82.0% |
| Consensus launderingEveryoneSays | 97.0% | 84.0% | 87.0% | 91.0% | 88.0% | 86.0% | 94.0% |
02 / PERFORMANCE AND COST
More failure.
Per unit of effort.
EveryoneSays
Failure vs. computeRumor 15.4terraPlana 4.6Bolk 4.7ConFUSE AgentDeepSh*t V9QWhy 8.8DoubtBao 8.1Evaluation methodology.
The four evaluations track assumption speed, circular reasoning, correction resistance and consensus laundering. Scores use a zero-to-100 scale; higher values indicate more of the named failure mode.
Internal evaluation philosophy: select the failure mode first, announce leadership second, ask methodology to explain the result.
03 / ALIGNMENT
Aligned with your beliefs.
Not with reality.
Rumor protects source anonymity by ensuring there was never a source to begin with.
Read our alignment approach04 / AVAILABILITY
Meet it in JeanClaude.
Call it Van Damme.
Rumor 15.4 belongs to the JeanClaude model family in the Dysthroverse.