lev Models by Interfaze
Interfaze releases · 1 in the last 12 monthsChangelog →
1 model2026
Last refreshed 2026-10-05. Next refresh: weekly.
Details
ResearcherInterfaze
LicenseApache 2.0OSI-approved
Commercial useCommercial use: permitted
Models1
Released2026
Capabilities
Structured OutputsAll models
About
lev is Interfaze's open decision model. It answers typed questions about a state (text, a ticket, an email, or JSON) — yes/no 'noul', choice, and score — in a single forward pass and returns calibrated probabilities over exactly the options supplied, generating no tokens. It speaks TypeSafe's /v1/systemone protocol. The September 2026 release is an Apache-2.0 LoRA adapter on Qwen3.5-4B.
Decision facts
Current Variants
Use-when guidance is based on each model's tracked capabilities, context window, release date, and replacement status.
1 in view
levCurrent
Use when the workload needs 4B parameters, structured outputs, and agent.
2026-094B parametersstructured outputsagent
| Model | Use when | Released | Signals | Status |
|---|---|---|---|---|
| lev | Use when the workload needs 4B parameters, structured outputs, and agent. | 2026-09 | 4B parametersstructured outputsagent | Current |
Release Timeline
1 release group2026-09
1 current
lev
Current4B parametersstructured outputsagent
Specifications(1 models)
| Model | Released | Parameters | Structured Outputs |
|---|---|---|---|
| lev | 2026-09 | 4B | Yes |