Comprehensive side-by-side LLM comparison
o1 mini offers 57.5K more tokens in context window than DeepSeek-V3.2. DeepSeek-V3.2 is $4.13 cheaper per million tokens. Both models have their strengths depending on your specific coding needs.
DeepSeek
DeepSeek-V3.2, released by DeepSeek on December 1, 2025, is a large language model with 685 billion total parameters featuring integrated thinking in tool-use and support for both reasoning and direct generation modes. It features a 128K token context window and introduced large-scale agent training across 1,800+ environments. DeepSeek-V3.2 targets agentic workflows, complex instruction following, and coding tasks under an open MIT license.
OpenAI
OpenAI o1 mini, released by OpenAI in September 2024, is a lightweight reasoning model from the o1 family optimized for efficient STEM problem-solving at lower cost and latency. It features a 128K token context window and applies chain-of-thought reasoning specifically tuned for mathematics, science, and coding tasks. o1 mini targets use cases where rapid, cost-efficient reasoning is preferred over the broader capabilities of the full o1 model.
1 year newer

o1 mini
OpenAI
2024-09-12

DeepSeek-V3.2
DeepSeek
2025-12-01
Cost per million tokens (USD)
DeepSeek-V3.2
o1 mini
Context window and performance specifications
Available providers and their performance metrics
DeepSeek-V3.2
DeepSeek
o1 mini
DeepSeek-V3.2
o1 mini
DeepSeek-V3.2
o1 mini
OpenAI