Compare AI models

Specifications
ParametersA rough measure of how big the model is. More parameters usually means more capable and more expensive to run, though it is a poor guide on its own — a smaller, newer model often beats a larger, older one.
—2.4T
Context windowHow much text the model can hold in mind at once — your question, any documents you attach, the conversation so far, and its own reply. Go past it and the earliest part falls out of view.
128k1M
These models have no shared benchmark scores.
Overview
CompanyOpenAIQwen
Release dateFeb 12 2026Sep 2 2026
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

GPT-5.3-Codex-Spark and Qwen3.8-Max-0902 don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. GPT-5.3-Codex-Spark shipped 202 days before Qwen3.8-Max-0902, so benchmark comparisons should account for the intervening progress.

Context windows are 128k (GPT-5.3-Codex-Spark) vs 1M (Qwen3.8-Max-0902).

Direct benchmark comparisons are unavailable — GPT-5.3-Codex-Spark and Qwen3.8-Max-0902 don't publish scores on any of the same benchmarks.