Comprehensive side-by-side LLM comparison
o4 mini offers 164.0K more tokens in context window than DeepSeek-V3.2 Thinking. DeepSeek-V3.2 Thinking is $2.76 cheaper per million tokens. o4 mini supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
DeepSeek
DeepSeek-V3.2-Exp (DeepSeek-V3.2 Thinking), released by DeepSeek in September 2025, is the experimental preview release of the DeepSeek-V3.2 model featuring 685 billion total parameters and integrated thinking capabilities. It introduced the architecture and training approaches that became the foundation of the final V3.2 release, including thinking in tool-use and hybrid reasoning modes.
OpenAI
OpenAI o4 mini, released by OpenAI in April 2025, is a compact reasoning model from the o4 family that combines multimodal understanding with efficient chain-of-thought processing. It features a 200K token context window and native image understanding, with strong performance on mathematics and coding benchmarks relative to its inference cost. o4 mini targets cost-sensitive applications requiring both visual reasoning and mathematical accuracy.
5 months newer

o4 mini
OpenAI
2025-04-16

DeepSeek-V3.2 Thinking
DeepSeek
2025-09-29
Cost per million tokens (USD)
DeepSeek-V3.2 Thinking
o4 mini
Context window and performance specifications
Available providers and their performance metrics
DeepSeek-V3.2 Thinking
DeepSeek
o4 mini
DeepSeek-V3.2 Thinking
o4 mini
DeepSeek-V3.2 Thinking
o4 mini
OpenAI