LangSmith data shows Claude Sonnet 5 and GPT-5.6 Luna gaining ground
AILangChain reports that over the last month Claude Sonnet 5 rose from #9 to #2 in model adoption, with 51% more organizations using it. GPT-5.6 Luna climbed from #3 to #1 in call footprints, up 65% in calls, while smaller, faster models dominate call footprints overall. Two open-weights models entered the adoption top 10 but do not lead in call volume.







