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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.
4B—
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.
256k1M
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.
—$0.10Azure
Cheapest outputLowest output rate across every provider on OpenRouter, the lab included. May come from a different provider than the cheapest input.
—$0.40Azure
—$40.00Azure
Benchmarks
GPQA DiamondScience — Graduate-level science questions in biology, physics, and chemistry — hard enough that subject-matter PhDs score around 65%. Higher is better.
72.41%50.3%
Overview
CompanyNVIDIAOpenAI
Release dateOct 16 2026Apr 14 2025
AccessOpen WeightClosed
Model detailsView modelView model

Frequently asked questions

Nemotron Labs Dory 1.0 4B leads GPT-4.1 nano on 1 of the 1 benchmark they both report (GPQA Diamond). GPT-4.1 nano shipped 550 days before Nemotron Labs Dory 1.0 4B, so benchmark comparisons should account for the intervening progress.

Context windows are 256k (Nemotron Labs Dory 1.0 4B) vs 1M (GPT-4.1 nano). Nemotron Labs Dory 1.0 4B is open weight, while GPT-4.1 nano is closed.

On GPQA Diamond, Nemotron Labs Dory 1.0 4B leads at 72.41% vs GPT-4.1 nano at 50.3%.