Comprehensive side-by-side LLM comparison
o3-mini leads with 8.5% higher average benchmark score. o3-mini offers 37.9K more tokens in context window than DeepSeek-V3. DeepSeek-V3 is $4.13 cheaper per million tokens. Overall, o3-mini is the stronger choice for coding tasks.
DeepSeek
DeepSeek-V3 was introduced as a major architectural advancement, developed with 671B mixture-of-experts parameters and trained on 14.8 trillion tokens. Built to be three times faster than V2 while maintaining open-source availability, it demonstrates competitive performance against frontier closed-source models and represents a significant leap in efficient large-scale model design.
OpenAI
o3-mini was created as an efficient variant of the o3 reasoning model, designed to provide advanced thinking capabilities with reduced computational requirements. Built to make next-generation reasoning accessible to a broader range of applications, it balances analytical depth with practical speed and cost considerations.
1 month newer

DeepSeek-V3
DeepSeek
2024-12-25

o3-mini
OpenAI
2025-01-30
Cost per million tokens (USD)

DeepSeek-V3

o3-mini
Context window and performance specifications
Average performance across 8 common benchmarks

DeepSeek-V3

o3-mini
Performance comparison across key benchmark categories

DeepSeek-V3

o3-mini
o3-mini
2023-09-30
Available providers and their performance metrics

DeepSeek-V3
DeepSeek

o3-mini

DeepSeek-V3

o3-mini

DeepSeek-V3

o3-mini
Azure
OpenAI