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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.
72B—
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.
128k200k
These models have no shared benchmark scores.
Overview
CompanyMoonshot AIOpenAI
Release dateJun 17 2025May 16 2025
AccessOpen WeightClosed
Model detailsView modelView model

Frequently asked questions

Kimi-Dev and codex-mini-latest don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. codex-mini-latest shipped 32 days before Kimi-Dev, so benchmark comparisons should account for the intervening progress.

Context windows are 128k (Kimi-Dev) vs 200k (codex-mini-latest). Kimi-Dev is open weight, while codex-mini-latest is closed.

Direct benchmark comparisons are unavailable — Kimi-Dev and codex-mini-latest don't publish scores on any of the same benchmarks.