Jan-nano Technical Report
Most language models face a fundamental tradeoff where powerful capabilities
require substantial computational resources. We shatter this constraint with
Jan-nano, a 4B parameter language model that redefines efficiency through
radical specialization: instead of trying to know everything, it masters the
art of finding anything instantly. Fine-tuned from Qwen3-4B using our novel
multi-stage RLVR system that completely eliminates reliance on next token
prediction training (SFT), Jan-nano achieves 83.2% on SimpleQA benchmark with
MCP integration while running on consumer hardware. With 128K context length,
Jan-nano proves that intelligence isn't about scale, it's about strategy.
686335d7588cea0da970c849
Alan Dao
claimed_verified
2025-07-01T10:14:10.228Z
62d7b2339b629105a5d6888a
https://cdn-avatars.huggingface.co/v1/production/uploads/62d7b2339b629105a5d6888a/pYi994fqzXctgoed79oUo.png
Alan Dao
user
alandao
686335d7588cea0da970c84a
Dinh Bach Vu
Jan-nano Technical Report
Most language models face a fundamental tradeoff where powerful capabilities
require substantial computational resources. We shatter this constraint with
Jan-nano, a 4B parameter language model that redefines efficiency through
radical specialization: instead of trying to know everything, it masters the
art of finding anything instantly. Fine-tuned from Qwen3-4B using our novel
multi-stage RLVR system that completely eliminates reliance on next token
prediction training (SFT), Jan-nano achieves 83.2% on SimpleQA benchmark with
MCP integration while running on consumer hardware. With 128K context length,
Jan-nano proves that intelligence isn't about scale, it's about strategy.
Jan-nano, a 4B parameter language model, achieves high efficiency and performance through specialized fine-tuning and multi-stage RLVR, operating on consumer hardware with a 128K context length.
language models parameter-efficient fine-tuning multi-stage RLVR next token prediction training SimpleQA benchmark MCP integration context length