ChatGPT-5.2 Codex

The Syntax Singularity. Redefining software engineering with recursive error correction, a 10M token context window, and 99.2% HumanEval accuracy.

The Quantum Leap in Logic

GPT-5.2 Codex does not just autocomplete; it architects. By introducing a dedicated "Logic Verification Layer," the model achieves near-perfect scores on standard coding benchmarks, leaving previous generations in the legacy bin.

HumanEval Score
99.2%
Pass@1 Accuracy
SWE-bench Verified
84.0%
Real-world Issue Resolution
Inference Latency
12ms
Time to First Token

Benchmark Comparison: The Codex Evolution

Infinite Context

The "Project-State" memory module allows 5.2 Codex to hold entire repositories in active memory. It doesn't just read files; it understands the entire dependency graph, enabling refactoring across thousands of files simultaneously.

Active Token Limit 10,000,000
Retrieval Accuracy 99.98%
Max Repository Size 4.5 GB

The Context Explosion

Multidimensional Mastery

5.2 Codex is not limited to modern stacks. It demonstrates unprecedented proficiency in legacy translation (COBOL to Rust) and low-level system architecture, moving beyond simple script generation.

Skill Proficiency Matrix

Normalized against Human Expert Level (100)

Projected Industry Utilization

The Speed of Thought

Traditional models slow down exponentially as logic complexity increases. 5.2 Codex maintains linear latency even during deep reasoning tasks, thanks to its specialized "Sparse-Logic" tensor processing.