Comprehensive side-by-side LLM comparison
. Both models have their strengths depending on your specific coding needs.
OpenAI
GPT-OSS-20B is an open-weight large language model with 20 billion parameters from OpenAI's open-source model initiative. It targets deployments requiring a smaller, efficient model that can run on consumer or mid-tier hardware while maintaining strong reasoning and coding capabilities relative to its size.
Xiaomi
MiMo-V2-Flash, released by Xiaomi on December 16, 2025, is a Mixture-of-Experts large language model with 309 billion total parameters and 15 billion active parameters per inference, designed for high-speed reasoning and agentic workflows. It features a 256K token context window, processes up to 150 tokens per second, and was trained on 27 trillion tokens. MiMo-V2-Flash targets open-source deployments requiring fast, capable coding and reasoning with an efficient inference footprint, under an MIT license.
4 months newer

GPT-OSS-20B
OpenAI
2025-08-05
MiMo-V2-Flash
Xiaomi
2025-12-16
Context window and performance specifications
Available providers and their performance metrics
GPT-OSS-20B
Hugging Face
MiMo-V2-Flash
GPT-OSS-20B
MiMo-V2-Flash
GPT-OSS-20B
MiMo-V2-Flash