Total runs:
274.5K
Run Growth:
-12.4K
Growth Rate:
-4.51%
Sponsored by
APIMart
janhq / Jan-v1-4B
Model's Last Updated: August 23 2025
text-generation
Introduction of Jan-v1-4B
Model Details of Jan-v1-4B
Jan-v1: Advanced Agentic Language Model
Overview
Jan-v1 is the first release in the Jan Family , designed for agentic reasoning and problem-solving within the Jan App . Based on our Lucy model, Jan-v1 achieves improved performance through model scaling.
Jan-v1 uses the Qwen3-4B-thinking model to provide enhanced reasoning capabilities and tool utilization. This architecture delivers better performance on complex agentic tasks.
Performance
Question Answering (SimpleQA)
For question-answering, Jan-v1 shows a significant performance gain from model scaling, achieving 91.1% accuracy.
The 91.1% SimpleQA accuracy represents a significant milestone in factual question answering for models of this scale, demonstrating the effectiveness of our scaling and fine-tuning approach.
Chat Benchmarks
These benchmarks evaluate the model's conversational and instructional capabilities.
Quick Start
Integration with Jan App
Jan-v1 is optimized for direct integration with the Jan App . Simply select the model from the Jan App interface for immediate access to its full capabilities.
Local Deployment
Using vLLM:
vllm serve janhq/Jan-v1-4B \
--host 0.0.0.0 \
--port 1234 \
--enable-auto-tool-choice \
--tool-call-parser hermes
Using llama.cpp:
llama-server --model Jan-v1-4B-Q4_K_M.gguf \
--host 0.0.0.0 \
--port 1234 \
--jinja \
--no-context-shift
Recommended Parameters
temperature: 0.6
top_p: 0.95
top_k: 20
min_p: 0.0
max_tokens: 2048
🤝 Community & Support
- Discussions : HuggingFace Community
- Jan App : Learn more about the Jan App at jan.ai
📄 Citation
Updated Soon
Runs of janhq Jan-v1-4B on huggingface.co
395
Total runs
0
24-hour runs
6
3-day runs
41
7-day runs
-1.2K
30-day runs
More Information About Jan-v1-4B huggingface.co Model
Url of Jan-v1-4B
Jan-v1-4B huggingface.co Url
Provider of Jan-v1-4B huggingface.co
Other API from janhq
Updated:March 24 2026
Total runs:
23.6K
Run Growth:
4.3K
Growth Rate:
18.62%
Total runs:
5.9K
Run Growth:
5.9K
Growth Rate:
100.00%
Total runs:
4.2K
Run Growth:
152
Growth Rate:
3.65%
Total runs:
2.8K
Run Growth:
-198
Growth Rate:
-7.05%
Total runs:
458
Run Growth:
36
Growth Rate:
7.86%
Total runs:
252
Run Growth:
-53
Growth Rate:
-31.18%
Total runs:
160
Run Growth:
0
Growth Rate:
0.00%
Total runs:
97
Run Growth:
-111
Growth Rate:
-114.43%
Total runs:
86
Run Growth:
-22
Growth Rate:
-25.58%
Total runs:
74
Run Growth:
33
Growth Rate:
44.59%
Total runs:
74
Run Growth:
2
Growth Rate:
3.23%
Total runs:
65
Run Growth:
-1
Growth Rate:
-11.11%
Total runs:
54
Run Growth:
31
Growth Rate:
59.62%
Total runs:
52
Run Growth:
36
Growth Rate:
69.23%
Total runs:
45
Run Growth:
15
Growth Rate:
45.45%
Total runs:
39
Run Growth:
-84
Growth Rate:
-215.38%
Total runs:
30
Run Growth:
-3
Growth Rate:
-12.50%
Total runs:
24
Run Growth:
9
Growth Rate:
37.50%
Total runs:
21
Run Growth:
-9
Growth Rate:
-75.00%
Total runs:
18
Run Growth:
12
Growth Rate:
66.67%
Total runs:
17
Run Growth:
13
Growth Rate:
76.47%
Total runs:
17
Run Growth:
14
Growth Rate:
82.35%
Total runs:
17
Run Growth:
14
Growth Rate:
82.35%
Total runs:
16
Run Growth:
-10
Growth Rate:
-100.00%
Total runs:
15
Run Growth:
9
Growth Rate:
60.00%
Total runs:
14
Run Growth:
-66
Growth Rate:
-471.43%
Total runs:
14
Run Growth:
0
Growth Rate:
0.00%
Total runs:
14
Run Growth:
12
Growth Rate:
85.71%
Total runs:
12
Run Growth:
-36
Growth Rate:
-300.00%
Total runs:
11
Run Growth:
3
Growth Rate:
27.27%
Total runs:
10
Run Growth:
-10
Growth Rate:
-100.00%
Total runs:
10
Run Growth:
1
Growth Rate:
10.00%
Total runs:
9
Run Growth:
-9
Growth Rate:
-100.00%
Total runs:
9
Run Growth:
0
Growth Rate:
0.00%
Total runs:
9
Run Growth:
2
Growth Rate:
28.57%
Total runs:
8
Run Growth:
-5
Growth Rate:
-62.50%
Total runs:
6
Run Growth:
6
Growth Rate:
100.00%
Total runs:
6
Run Growth:
0
Growth Rate:
0.00%
Total runs:
6
Run Growth:
3
Growth Rate:
50.00%
Total runs:
6
Run Growth:
-15
Growth Rate:
-250.00%
Total runs:
5
Run Growth:
1
Growth Rate:
20.00%
Total runs:
5
Run Growth:
-14
Growth Rate:
-280.00%
Total runs:
5
Run Growth:
-1
Growth Rate:
-20.00%
Total runs:
5
Run Growth:
-4
Growth Rate:
-100.00%
Total runs:
5
Run Growth:
-5
Growth Rate:
-100.00%
Total runs:
5
Run Growth:
-8
Growth Rate:
-200.00%
Total runs:
5
Run Growth:
-11
Growth Rate:
-220.00%
Total runs:
4
Run Growth:
0
Growth Rate:
0.00%
Total runs:
4
Run Growth:
-2
Growth Rate:
-50.00%
Total runs:
4
Run Growth:
3
Growth Rate:
75.00%
Total runs:
4
Run Growth:
0
Growth Rate:
0.00%
Total runs:
4
Run Growth:
1
Growth Rate:
25.00%
Total runs:
4
Run Growth:
-19
Growth Rate:
-475.00%
Total runs:
3
Run Growth:
-4
Growth Rate:
-133.33%
Total runs:
3
Run Growth:
0
Growth Rate:
0.00%
Total runs:
3
Run Growth:
1
Growth Rate:
33.33%
Total runs:
3
Run Growth:
-5
Growth Rate:
-166.67%
Total runs:
3
Run Growth:
0
Growth Rate:
0.00%
Total runs:
3
Run Growth:
0
Growth Rate:
0.00%
Total runs:
2
Run Growth:
-12
Growth Rate:
-600.00%
Total runs:
2
Run Growth:
0
Growth Rate:
0.00%
Total runs:
2
Run Growth:
-5
Growth Rate:
-500.00%
Total runs:
2
Run Growth:
0
Growth Rate:
0.00%
Total runs:
2
Run Growth:
2
Growth Rate:
100.00%
Total runs:
1
Run Growth:
-5
Growth Rate:
-500.00%
Total runs:
1
Run Growth:
-13
Growth Rate:
-1300.00%
Total runs:
1
Run Growth:
-2
Growth Rate:
-200.00%
Total runs:
1
Run Growth:
-5
Growth Rate:
-500.00%
Total runs:
1
Run Growth:
-1
Growth Rate:
-100.00%