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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.
16B—
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.
4k400k
Overview
CompanyDeepSeekOpenAI
Release dateJan 11 2024Nov 13 2025
AccessOpen WeightClosed
Model detailsView modelView model

Frequently asked questions

DeepSeek-MoE and GPT-5.1-Codex-Mini don't publish scores on any of the same benchmarks, so there's no direct head-to-head comparison. DeepSeek-MoE shipped 672 days before GPT-5.1-Codex-Mini, so benchmark comparisons should account for the intervening progress.

Context windows are 4k (DeepSeek-MoE) vs 400k (GPT-5.1-Codex-Mini). DeepSeek-MoE is open weight, while GPT-5.1-Codex-Mini is closed.

Direct benchmark comparisons are unavailable — DeepSeek-MoE and GPT-5.1-Codex-Mini don't publish scores on any of the same benchmarks.