open weights — A model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.
Why it matters
Qwen2.5 is one of the largest open weightsA model whose trained parameters are published for anyone to download and run — unlike API-only models you can access but never possess.Full definition → model releases available, spanning many parameter sizes with strong coding and reasoning gains — useful when you need capable, self-hostable alternatives to closed frontier APIs.
Key quotes
“We are announcing what might be the largest opensource release in history!”