Plumb-4B (crh225, JevK5 v0.2 + LoRA)

New

crh225/plumb-4b

Compare the best decision models or read our decision model vs LLM guide.

Plumb-4B is a typed decision model by crh225. It processes text inputs to produce calibrated probability outputs for yes/no, multiple-choice, or score questions.

  • decision model

At a glance

providercrh225
released—
context—
input / M—

Specifications

What the API gives you

Context window
— tokens
Max output
—
Input price
— / 1M tokens
Output price
— / 1M tokens
Cache read
—
Modalities
text → decision
Knowledge cutoff
—
Released
—

Measured evidence

Public benchmark record

JevBench
48.3 ± 7.12026-10-16

LMArena data licensed CC-BY-4.0. Aider (Apache-2.0) and SWE-bench (MIT) are open. Design Arena uses blind human preference.

Open-weight model on Hugging Face.

Task evidence

How broad is the support?

Each status is exact to this model version and the selected task. Official release claims remain provisional.

  • Best Open-Weight Decision Model for Self-HostingProvisional evidence

    100% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing. 1 of 1 configured evaluation feeds currently have results.

  • Best Decision Model for Agent Routing and ScoringProvisional evidence

    100% of intended weighted task evidence across 1 independent source; broader independent confirmation is still missing. 1 of 1 configured evaluation feeds currently have results.

Recommendation coverage

Where this model appears

Not currently included in a published recommendation. The task evidence panel above says exactly what is confirmed and what is still missing.

Catalog data via OpenRouter and models.dev. Last checked within the past 6 hours.