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.
1M1M
Benchmarks
Terminal-Bench 4.0Agentic terminal coding — Can the AI work in a command-line terminal — running commands and finishing technical setup tasks the way a developer would? Version 4.0 recalibrated how much time, CPU and memory each task gets, removed eight tasks and fixed nineteen, so fewer runs fail for reasons that have nothing to do with the model. Scores are not comparable with earlier versions. Higher is better.
60.9%26.97%
Overview
CompanyAnthropicQwen
Release dateSep 1 2026Sep 2 2026
AccessClosedClosed
Model detailsView modelView model

Frequently asked questions

Claude Mythos 5.1 leads Qwen3.8-Max-0902 on 1 of the 1 benchmark they both report (Terminal-Bench 4.0). Claude Mythos 5.1 shipped 1 days before Qwen3.8-Max-0902, so benchmark comparisons should account for the intervening progress.

Context windows are 1M (Claude Mythos 5.1) vs 1M (Qwen3.8-Max-0902).

On Terminal-Bench 4.0, Claude Mythos 5.1 leads at 60.9% vs Qwen3.8-Max-0902 at 26.97%.