Comprehensive side-by-side LLM comparison
o3 offers 164.0K more tokens in context window than DeepSeek-V3.2-Speciale. DeepSeek-V3.2-Speciale is $48.63 cheaper per million tokens. o3 supports multimodal inputs. Both models have their strengths depending on your specific coding needs.
DeepSeek
DeepSeek-V3.2-Speciale is a high-compute variant of DeepSeek-V3.2 with 685 billion total parameters, made available for a limited period in December 2025. It was released without tool-calling support but demonstrated exceptional reasoning performance, achieving gold-medal results in the 2025 IMO and IOI competitions. DeepSeek-V3.2-Speciale targets research and benchmarking use cases requiring maximum reasoning capability under an MIT license.
OpenAI
OpenAI o3, released by OpenAI in April 2025, is a large reasoning model that applies extended chain-of-thought processing to deliver improved performance on complex math, science, and coding tasks. It features a 200K token context window and native image understanding, with demonstrated strong results on mathematics and software engineering benchmarks. o3 targets demanding analytical and engineering tasks where deliberate, multi-step reasoning produces significantly better outcomes than direct generation.
7 months newer

o3
OpenAI
2025-04-16

DeepSeek-V3.2-Speciale
DeepSeek
2025-12
Cost per million tokens (USD)
DeepSeek-V3.2-Speciale
o3
Context window and performance specifications
Available providers and their performance metrics
DeepSeek-V3.2-Speciale
DeepSeek
o3
DeepSeek-V3.2-Speciale
o3
DeepSeek-V3.2-Speciale
o3
OpenAI