# Open-Jev 9B (Zefan Cai) vs system-one-open (Gemma 4 E2B LoRA on an L4)

> Side-by-side benchmark comparison for Open-Jev 9B (Zefan Cai) and system-one-open (Gemma 4 E2B LoRA on an L4) across agentic, coding, multimodal, knowledge, reasoning, multilingual, and math tasks.

- Canonical page: https://benchlm.ai/compare/jevbench-open-jev-zefan-9b-vs-jevbench-system-one-open
- Last updated: September 30, 2026

- Shared sourced benchmarks: 2
- HTML indexing: indexable
- Ranking lane: BenchAlign v5.8

## Quick Verdict

Evidence is too thin for a benchmark verdict: Open-Jev 9B (Zefan Cai) and system-one-open (Gemma 4 E2B LoRA on an L4) share only 2 sourced benchmark rows.

## Summary

- Only 2 shared sourced benchmark rows are available. That is not enough for a broad capability verdict, so this mirror does not name an overall winner.

## Model Snapshot

| Property | Open-Jev 9B (Zefan Cai) | system-one-open (Gemma 4 E2B LoRA on an L4) |
|----------|----------|----------|
| Creator | Zefan Cai (@Zefan_Cai) | mithalouni |
| Type | Open Weight | Open Weight |
| Reasoning | Non-Reasoning | Non-Reasoning |
| Context | null | null |
| Independent public score (not head-to-head) | null | null |
| Benchmarks Covered | 2 | 2 |
| Pricing (input/output) | Pricing unavailable / Pricing unavailable | Pricing unavailable / Pricing unavailable |

## Category Breakdown

### Reasoning

- Winner: Insufficient shared evidence
- Open-Jev 9B (Zefan Cai) public-lane score: Coming soon
- system-one-open (Gemma 4 E2B LoRA on an L4) public-lane score: Coming soon

| Benchmark | Open-Jev 9B (Zefan Cai) | system-one-open (Gemma 4 E2B LoRA on an L4) | Winner |
|-----------|-----------|-----------|--------|
| JevBench 1.4 | 11.20 | 45.11 | system-one-open (Gemma 4 E2B LoRA on an L4) |
| JevBench 1.5 | 24.36 | 42.44 | system-one-open (Gemma 4 E2B LoRA on an L4) |

## FAQ

### Is there enough evidence to pick between Open-Jev 9B (Zefan Cai) and system-one-open (Gemma 4 E2B LoRA on an L4)?

Not yet. The models share only 2 sourced benchmark rows, so this mirror reports the available measurements and metadata without naming a broad winner.

### What can I compare safely on this page?

Published pricing, context windows, model type, and individual shared benchmark rows are directly comparable. Independent overall scores and non-overlapping benchmark coverage are labeled separately and should not be read as a controlled head-to-head result.

## Related Comparisons

- [Open-Jev 9B (Zefan Cai) vs GPT-6 Astra](/compare/gpt-6-astra-vs-jevbench-open-jev-zefan-9b)
- [system-one-open (Gemma 4 E2B LoRA on an L4) vs GPT-6 Astra](/compare/gpt-6-astra-vs-jevbench-system-one-open)
- [Open-Jev 9B (Zefan Cai) vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-jevbench-open-jev-zefan-9b)
- [system-one-open (Gemma 4 E2B LoRA on an L4) vs Claude Opus 5.5](/compare/claude-opus-5-5-vs-jevbench-system-one-open)

## Explore More

- [Open-Jev 9B (Zefan Cai) profile](/models/jevbench-open-jev-zefan-9b)
- [system-one-open (Gemma 4 E2B LoRA on an L4) profile](/models/jevbench-system-one-open)
- [Compare Pricing](/llm-pricing)
- [Alternative Finder](/tools/alternative-finder)
- [LLM Selector](/tools/llm-selector)
- [Overall Rankings](/best/overall)