Comprehensive side-by-side LLM comparison
GPT-5.2 leads with 5.5% higher average benchmark score. Gemini 3 Pro is available on 2 providers. Overall, GPT-5.2 is the stronger choice for coding tasks.
Google DeepMind
Gemini 3 Pro, released by Google in November 2025, is a large language model from the Gemini 3 family designed for complex reasoning, broad world knowledge, and multi-step problem solving. It features a 1M token context window, 64K maximum output tokens, and native multimodal input including text, images, audio, and video. Gemini 3 Pro targets research-grade reasoning, advanced data analysis, and applications requiring comprehensive understanding across diverse input formats.
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.
23 days newer

Gemini 3 Pro
Google DeepMind
2025-11-18

GPT-5.2
OpenAI
2025-12-11
Context window and performance specifications
Average performance across 16 common benchmarks
Gemini 3 Pro
GPT-5.2
Performance comparison across key benchmark categories
Gemini 3 Pro
GPT-5.2
2025-08
Available providers and their performance metrics
Gemini 3 Pro
Google Cloud Vertex AI
GPT-5.2
Gemini 3 Pro
GPT-5.2
Gemini 3 Pro
GPT-5.2
GPT-5.2