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Gemini 3 Pro vs GPT-5.1 Codex Max
Comprehensive side-by-side LLM comparison
GPT-5.1 Codex Max leads with 3.0% higher average benchmark score. Gemini 3 Pro supports multimodal inputs. Gemini 3 Pro is available on 2 providers. Both models have their strengths depending on your specific coding needs.
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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.
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OpenAI
GPT-5.1 Codex Max, released by OpenAI in November 2025, is an enhanced coding variant from the GPT-5.1 Codex line, designed for more complex software engineering tasks requiring additional reasoning depth. It targets large-scale code generation, automated refactoring, and sophisticated agentic development workflows.
17 days newer
GPT-5.1 Codex Max
OpenAI
2025-11
Gemini 3 Pro
Google DeepMind
2025-11-18
Performance Metrics
Context window and performance specifications
Average performance across 2 common benchmarks
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Gemini 3 Pro
Average Score:51.5%
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GPT-5.1 Codex Max
Average Score:54.4%(+3.0%)
Performance comparison across key benchmark categories
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Gemini 3 Pro
Coding51.5%
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GPT-5.1 Codex Max
Coding54.4%(+3.0%)
Provider Availability & Performance
Available providers and their performance metrics
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Gemini 3 Pro
2 providers
Google Cloud Vertex AI
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GPT-5.1 Codex Max
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Gemini 3 Pro
Avg Score:51.5%
Providers:2
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GPT-5.1 Codex Max
Avg Score:54.4%(+3.0%)
Providers:0