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Gemini 2.5 Pro vs GPT-5 Codex
Comprehensive side-by-side LLM comparison
GPT-5 Codex leads with 11.3% higher average benchmark score. Gemini 2.5 Pro supports multimodal inputs. Gemini 2.5 Pro is available on 2 providers. Overall, GPT-5 Codex is the stronger choice for coding tasks.
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Gemini 2.5 Pro was developed as Google's most intelligent AI model, designed to comprehend vast datasets and challenging problems from diverse information sources including text, audio, images, and video. Built to handle complex reasoning and multi-step problem solving, it represents Google's flagship offering for enterprise and advanced applications.
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OpenAI
GPT-5 Codex was developed as a specialized variant of GPT-5 optimized for programming and software development tasks. Built to understand and generate code across multiple programming languages, it serves developers with enhanced capabilities for code completion, debugging, translation, and explanation of complex codebases.
3 months newer
Gemini 2.5 Pro
2025-05-20
GPT-5 Codex
OpenAI
2025-09-15
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Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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Gemini 2.5 Pro
Average Score:63.2%
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GPT-5 Codex
Average Score:74.5%(+11.3%)
Performance comparison across key benchmark categories
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Gemini 2.5 Pro
Coding63.2%
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GPT-5 Codex
Coding74.5%(+11.3%)
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Knowledge Cutoff
Training data recency comparison
GPT-5 Codex
2024-09-30
Gemini 2.5 Pro
2025-01-31
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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Gemini 2.5 Pro
2 providers
Throughput: 85 tok/s
Latency: 0.7ms
ZeroEval
Throughput: 85 tok/s
Latency: 0.7ms
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Gemini 2.5 Pro
Avg Score:63.2%
Providers:2
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GPT-5 Codex
Avg Score:74.5%(+11.3%)
Providers:0