GPT-5 Pro vs GPT-5.2-Codex
Detailed technical comparison between GPT-5 Pro (OpenAI) and GPT-5.2-Codex (OpenAI). Review live API token pricing, context window capabilities, time-to-first-token latency, and verified benchmark scores side-by-side.
Comparison Snapshot
Tie
Equal CapacityTie
Equal CapabilityTie
Equal SpeedGPT-5.2-Codex
$1.75 / MTokGPT-5 Pro
GPT-5 Pro is OpenAI’s most advanced model, offering major improvements in reasoning, code quality, and user experience. It is optimized for complex tasks that require step-by-step reasoning, instruction following, and...
GPT-5.2-Codex
GPT-5.2-Codex is an upgraded version of GPT-5.1-Codex optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
Technical Specifications
🏆 = Superior Spec| Specification | GPT-5 Pro | GPT-5.2-Codex |
|---|---|---|
| Provider | OpenAI | OpenAI |
| Context Window | 400,000 tokens | 400,000 tokens |
| Agent Suitability | Not yet benchmarked | Not yet benchmarked |
| Time to First Token (TTFT) | No public TTFT data | No public TTFT data |
| Deployment Model | managed api | managed api |
| Production Stability | Stable GA (est.) | Stable GA (est.) |
| API Available | Yes | Yes |
| Released Date | 2025-10-06 | 2026-01-14 |
API Pricing Comparison
Input Price per Million Tokens
GPT-5 Pro
$15.00
GPT-5.2-Codex
$1.75
Output Price per Million Tokens
GPT-5 Pro
$120.00
GPT-5.2-Codex
$14.00
💡 Cost Ratio: GPT-5.2-Codex is 8.6x cheaper per input token than GPT-5 Pro.
Want to test both models live?
Run side-by-side prompt benchmarks in our dynamic multi-model Sandbox. Compare execution speeds, latency metrics, and compute actual costs in real-time.
Benchmark Performance Metrics
Standardized Scores (0–100%)Scores show verified raw accuracy percentages across standardized AI evaluation suites. Higher bars indicate superior performance in that domain.
GPT-5 Pro Quirks & Gotchas
No developer gotchas reported.
GPT-5.2-Codex Quirks & Gotchas
No developer gotchas reported.
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