Compare AI models

Specifications
ParametersThe learned values that shape how a model responds. B means billion and T means trillion. For mixture-of-experts models, the total count is larger than the number active for each token. Parameter count alone does not measure quality.
2.8T2.4T
Context windowHow much information the model can work with in one request, measured in tokens — pieces of words or other data. This includes your question, attachments, conversation and reply. Limits can vary by model variant and provider.
1M1M
API pricingUSD per 1M tokens · lower wins
Cheapest inputLowest input rate across every provider on OpenRouter, the lab included. The cheapest endpoint may run a quantised build or a shorter context — see "Available from" on the model page.
—$2.00Alibaba
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
—$6.00Alibaba
—$700Alibaba
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.
65.7%26.97%
Overview
CompanyMoonshot AIQwen
Release dateOct 23 2026Sep 2 2026
AccessOpen WeightClosed
Model detailsView modelView model

Frequently asked questions

Kimi K3.1 Pro leads Qwen3.8-Max-0902 on 1 of the 1 benchmark they both report (Terminal-Bench 4.0). Qwen3.8-Max-0902 shipped 51 days before Kimi K3.1 Pro, so benchmark comparisons should account for the intervening progress.

Kimi K3.1 Pro has 2.8T parameters, while Qwen3.8-Max-0902 has 2.4T. Context windows are 1M (Kimi K3.1 Pro) vs 1M (Qwen3.8-Max-0902). Kimi K3.1 Pro is open weight, while Qwen3.8-Max-0902 is closed.

On Terminal-Bench 4.0, Kimi K3.1 Pro leads at 65.7% vs Qwen3.8-Max-0902 at 26.97%.