Comprehensive side-by-side LLM comparison
GPT-5.2 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
GPT-5.2, released by OpenAI on December 11, 2025, is a large language model from the GPT-5 family that improves on GPT-5 in general intelligence, long-context understanding, agentic tool-calling, and vision. It features a 400K token context window, 128K maximum output tokens, and a knowledge cutoff of August 2025. GPT-5.2 targets long-context coding tasks, extended document analysis, and complex agentic workflows requiring reliable instruction following.
10 days newer

DeepSeek-V3.2-Speciale
DeepSeek
2025-12

GPT-5.2
OpenAI
2025-12-11
Context window and performance specifications
GPT-5.2
2025-08
Available providers and their performance metrics
DeepSeek-V3.2-Speciale
DeepSeek
GPT-5.2
DeepSeek-V3.2-Speciale
GPT-5.2
DeepSeek-V3.2-Speciale
GPT-5.2