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GPT-5.2 Codex vs Kimi K2 Thinking
Comprehensive side-by-side LLM comparison
GPT-5.2 Codex leads with 1.2% higher average benchmark score. Both models have their strengths depending on your specific coding needs.
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OpenAI
GPT-5.2 Codex is a coding-specialized variant from the GPT-5.2 family, designed for software engineering workflows including automated code generation, multi-file editing, and agentic development. It builds on GPT-5.2's improved instruction following and long-context capabilities, with optimizations specifically targeting programming tasks and agentic software workflows.
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Moonshot AI
Kimi K2 Thinking, released by Moonshot AI on November 6, 2025, is a reasoning-focused variant of Kimi K2 with 1 trillion total parameters and 32 billion active parameters, featuring extended chain-of-thought processing for complex problem solving. It builds on K2's agentic coding strengths with additional capabilities for mathematical and scientific reasoning. Kimi K2 Thinking targets open-source deployments requiring deep, deliberate reasoning across coding and analytical domains.
2 months newer
Kimi K2 Thinking
Moonshot AI
2025-11-06
GPT-5.2 Codex
OpenAI
2026-01-14
Performance Metrics
Context window and performance specifications
Average performance across 1 common benchmarks
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GPT-5.2 Codex
Average Score:45.0%(+1.2%)
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Kimi K2 Thinking
Average Score:43.8%
Performance comparison across key benchmark categories
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GPT-5.2 Codex
Coding45.0%(+1.2%)
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Kimi K2 Thinking
Coding43.8%
Provider Availability & Performance
Available providers and their performance metrics
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GPT-5.2 Codex
0 providers
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Kimi K2 Thinking
1 providers
Moonshot AI
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GPT-5.2 Codex
Avg Score:45.0%(+1.2%)
Providers:0
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Kimi K2 Thinking
Avg Score:43.8%
Providers:1