Analysis articles plus daily price drops, increases, new models and retirements.https://llmcostindex.com/https://llmcostindex.com/articles/open-weight-vs-proprietary-model-api-prices/https://llmcostindex.com/articles/open-weight-vs-proprietary-model-api-prices/Open-weight models have lower median API prices in every capability tier, with the largest price gap at the frontier. Compare costs and provider counts.Wed, 21 Oct 2026 10:48:29 GMT