{"models":[{"id":"opper/kev-4b","type":"evaluation","name":"Kev 4B","model_id":"kev-4b","capabilities":["text"],"speed":"fast","cost":0.003,"quality":"good","context_window":8192,"description":"Kev-4B System One decision model, a fine-tune by Jared Palmer of Alibaba's Qwen3.5-4B-Base, for typed yes/no decisions (noul), classification (choice) and rubric scoring (score), returning a probability for every option instead of text. Text or structured text input only, up to 8,192 tokens for the state plus one question; trained on states of up to 384 tokens, so accuracy on long documents is lower. Use POST /v3/compat/v1/systemone with model opper/kev-4b. Weights by Jared Palmer: https://huggingface.co/jaredpalmer/kev-4b. Base model: Alibaba's Qwen3.5-4B-Base, https://huggingface.co/Qwen/Qwen3.5-4B-Base.","retired_at":"2026-10-19T00:00:00Z","pricing":{"billing_unit":"per_mtok","input":[0.042],"output":[0]},"region":"EU","model":"kev-4b","family":"kev-4b","provider":{"slug":"opper","display_name":"Opper","owner_country":"SE"},"service_route":{"id":"opper/eu","adapter":"opper"},"maker":{"slug":"community","display_name":"Community"},"compliance":{"residency":"EU","country":"Dublin","inference_location":"EU","zdr":{"logging":false,"moderation":false,"caching":false,"training":false,"subprocessors":null},"training":"no","logging":"none","moderation":"none","caching":"none","content_storage":"none","dpa_available":true,"third_party_access":null,"transfer_mechanism":"eu_resident","route_id":"opper/eu"},"release":{"date":"2026-09-24","source":"vendor","url":"https://huggingface.co/jaredpalmer/kev-4b"},"references":[{"kind":"model_card","url":"https://huggingface.co/jaredpalmer/kev-4b","created_at":"2026-10-07T06:52:19.408494Z","updated_at":"2026-10-07T06:52:19.408494Z"}],"input_modalities":["text"],"output_modalities":["decisions"]}],"total":1,"offset":0,"limit":50}