+
+
+
+
+
+
+
+
VS
VS
VS
VS
VS
VS
GPT-5.2 Codex vs GPT-5.3 Codex
Comprehensive side-by-side LLM comparison
GPT-5.2 Codex leads with 1.8% higher average benchmark score. Both models have their strengths depending on your specific coding needs.
+
+
+
+
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.
+
+
+
+
OpenAI
GPT-5.3 Codex, released by OpenAI in February 2026, is a coding-specialized large language model from the GPT-5.3 family. It targets software engineering workflows including automated code generation, test writing, and agentic multi-file editing, built on the incremental improvements of the GPT-5.3 generation.
18 days newer
GPT-5.2 Codex
OpenAI
2026-01-14
GPT-5.3 Codex
OpenAI
2026-02
Average performance across 1 common benchmarks
+
+
+
+
GPT-5.2 Codex
Average Score:66.5%(+1.8%)
+
+
+
+
GPT-5.3 Codex
Average Score:64.7%
Performance comparison across key benchmark categories
+
+
+
+
GPT-5.2 Codex
Coding66.5%(+1.8%)
+
+
+
+
GPT-5.3 Codex
Coding64.7%
Provider Availability & Performance
Available providers and their performance metrics
+
+
+
+
GPT-5.2 Codex
0 providers
+
+
+
+
GPT-5.3 Codex
0 providers
+
+
+
+
GPT-5.2 Codex
Avg Score:66.5%(+1.8%)
Providers:0
+
+
+
+
GPT-5.3 Codex
Avg Score:64.7%
Providers:0