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GPT-5 Codex vs Kimi K2 Instruct
Comprehensive side-by-side LLM comparison
GPT-5 Codex leads with 2.9% higher average benchmark score. Both models have their strengths depending on your specific coding needs.
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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.
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Moonshot AI
Kimi K2 Instruct was developed as the instruction-tuned version of Kimi K2, designed to follow user instructions reliably across diverse tasks. Built to serve general-purpose conversational and task-completion applications, it provides Moonshot's accessible interface for language AI.
2 months newer
Kimi K2 Instruct
Moonshot AI
2025-07-11
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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GPT-5 Codex
Average Score:74.5%(+2.9%)
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Kimi K2 Instruct
Average Score:71.6%
Performance comparison across key benchmark categories
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GPT-5 Codex
Coding74.5%(+2.9%)
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Kimi K2 Instruct
Coding71.6%
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Knowledge Cutoff
Training data recency comparison
GPT-5 Codex
2024-09-30
More recent knowledge cutoff means awareness of newer technologies and frameworks
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5 Codex
0 providers
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Kimi K2 Instruct
1 providers
Novita
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GPT-5 Codex
Avg Score:74.5%(+2.9%)
Providers:0
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Kimi K2 Instruct
Avg Score:71.6%
Providers:1