230B / 10B (MoE with 23:1 sparsity ratio)
Apache 2.0
Enhanced successor to M2 focused on multi-language programming and real-world complex tasks; 74% SWE-bench Verified, 72.5% SWE-bench Multilingual, 88.6% VIBE benchmark (Visual & Interactive Benchmark for Execution); outperforms Claude Sonnet 4.5 and approaches Claude Opus 4.5 on multilingual coding; exceptional multi-language capabilities across Rust, Java, Go, C++, Kotlin, Objective-C, TypeScript, JavaScript; significantly strengthened native Android and iOS development; enhanced design comprehension and aesthetic expression for web/app scenarios (vibe coding with 3D, complex interactions, scientific visualization); improved composite instruction constraints for office automation; upgraded Interleaved Thinking for systematic problem-solving; more concise responses with faster speed and reduced token consumption vs M2; ultra-low cost at $0.30/1M tokens (~8% cost of Claude Sonnet); excellent generalization across coding agent frameworks (Claude Code, Droid/Factory AI, Cline, Kilo Code, Roo Code, BlackBox); API launched Dec 23, open weights Dec 25.