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Naive-N0.5-Flash

NaiveAIOpen WeightsPending Human Review

Naive-N0.5-Flash is NaiveAI’s open-weight coding and AI research model with 309B total parameters and 15.5B active per token. Continued pre-training adapts MiMo-V2.5 by replacing global attention with a hybrid of sliding-window attention and lightweight DeepSeek Sparse Attention. No full-attention layers remain, and the model supports a native 1M context. MIT-licensed FP8 weights and deployment code are available. Its research focus includes experiment execution, kernel optimization, and software development through external tools. The launch advertises future API access; invitation or future access is not treated as an unrestricted production API.

2026-09-27
309B total, 15.5B active
Sliding-window/sparse-attention Mixture-of-Experts Transformer
MIT

Specifications

Parameters
309B total, 15.5B active
Architecture
Sliding-window/sparse-attention Mixture-of-Experts Transformer
License
MIT
Context Window
1,048,576 tokens
Type
text
Modalities
text

Benchmark Scores

Advanced Specifications

Model Family
Naive
Finetuned From
MiMo-V2.5 base
API Access
Not Available
Chat Interface
Not Available
Variants
Naive-N0.5-Flash-FP8

Capabilities & Limitations

Capabilities
codingAI researchlong contextagentic reasoning
Known Limitations
Full weights still require substantial memory despite sparse activationReported peak speed uses a specialized speculative runtime and hardwareTool execution and experimental validation require an external harness
Notable Use Cases
AI research assistantskernel optimization agentsrepository maintenance
Tool Use Support
Yes