GPT-5.3 Codex (xhigh) – Benchmarks, Pricing & Intelligence Analysis
Not available on LLMBase
GPT-5.3 Codex (xhigh) is not currently available in LLMBase Chat or the LLMBase Inference API. Benchmarks, pricing, and model details remain available for research and comparison.
Try GPT-5 Codex instead.
Specifications
Technical details and pricing.
Benchmarks
7 benchmark scores from Artificial Analysis.
Composite Indices
Higher is better; speed and price are normalized
Standard Benchmarks
Only benchmarks with data are shown
Frequently Asked Questions
What is GPT-5.3 Codex (xhigh) good for?
GPT-5.3 Codex (xhigh) currently has benchmark and pricing data on this page. Runtime metadata will appear later when the model catalog entry becomes available.
How much does GPT-5.3 Codex (xhigh) cost?
Pricing is based on usage. Current rates are $1.75/1M tokens for input and $14.00/1M tokens for output.
Is GPT-5.3 Codex (xhigh) available in LLMBase Chat yet?
Not yet on this page. We will add chat and inference actions automatically once an exact catalog entry exists for GPT-5.3 Codex (xhigh).
Does GPT-5.3 Codex (xhigh) support images or audio?
GPT-5.3 Codex (xhigh) focuses on text-based tasks.
Benchmarks and pricing use Artificial Analysis where available. Catalog specs are used as a fallback.