Leanstral 1.5

Models & AI Labs

Leanstral 1.5 is a formal-verification model for proof engineering in Lean 4, with 119B total and 6B active parameters, released under Apache 2.0 with weights on Hugging Face and a free API endpoint. It scores 100% on miniF2F, solves 587/672 PutnamBench problems, and has found 5 previously unreported bugs across 57 real-world repositories.

🌐 Visit website ↗

🔗 Similar tools

Hunyuan Hy3

Hunyuan Hy3 is a 295B-parameter Mixture-of-Experts model with 21B active parameters and a …

Tools & Infrastructure
Qwen3.6-35B-A3B

Qwen3.6-35B-A3B is a Mixture-of-Experts model with 35 billion total parameters and 3 billi…
Command A+

Command A+ is a multimodal, agentic AI model with 218B total parameters (25B active) under…

Tools & Infrastructure
Inkling

Inkling is a compact multimodal AI model (text/image/audio) with 276B total parameters and…

Tools & Infrastructure
Qwen-Image-3.0

Qwen-Image-3.0 is Alibaba's next-generation MoE model, fully launched August 3, 2026, with…
ZAYA1-8B

ZAYA1-8B is a Mixture-of-Experts reasoning model with under 1 billion active parameters, t…

Tools & Infrastructure