Comprehensive side-by-side LLM comparison
. Both models have their strengths depending on your specific coding needs.
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.
OpenAI
OpenAI o3 mini, released by OpenAI in January 2025, is a compact reasoning model from the o3 family designed for efficient, cost-effective STEM problem-solving. It features a 200K token context window and adjustable chain-of-thought effort settings, allowing developers to trade reasoning depth for speed. o3 mini targets science, mathematics, and coding applications where lower inference cost and faster response times are a priority.
10 months newer

o3 mini
OpenAI
2025-01-31
MiMo-V2-Flash
Xiaomi
2025-12-16
Context window and performance specifications
Available providers and their performance metrics
MiMo-V2-Flash
o3 mini
OpenAI
MiMo-V2-Flash
o3 mini
MiMo-V2-Flash
o3 mini