{"name": "stepfun", "slug": "stepfun", "brand": {"name": "StepFun", "logo": "stepfun.png", "kind": "icon", "mono": false, "dark": null}, "timeline": {"date_min": "2026-07-24", "date_max": "2026-10-14", "changes": [], "endpoints": [{"slug": "stepfun2fstep-3.7-flash23stepfun2ffp8", "provider": "stepfun/fp8", "base": "stepfun", "providerSlug": "stepfun", "model": "stepfun/step-3.7-flash", "modelSlug": "stepfun2fstep-3.7-flash", "methods": ["b3it"], "first": "2026-07-24", "last": "2026-10-14", "last_query": "2026-10-14", "n_changes": 0, "lt": null, "b3it": {"tv": [["2026-07-24", 0.1175], ["2026-07-25", 0.09350000000000001], ["2026-07-26", 0.1335], ["2026-07-27", 0.0845], ["2026-07-28", 0.081], ["2026-07-29", 0.12050000000000001], ["2026-08-02", 0.10750000000000001], ["2026-08-03", 0.10800000000000001], ["2026-08-04", 0.12400000000000001], ["2026-08-05", 0.1145], ["2026-08-07", 0.11950000000000001], ["2026-08-07", 0.09250000000000001], ["2026-08-08", 0.1045], ["2026-08-09", 0.079], ["2026-08-10", 0.098], ["2026-08-11", 0.10049999999999999], ["2026-08-12", 0.101], ["2026-08-13", 0.1355], ["2026-08-14", 0.1335], ["2026-08-15", 0.11250000000000002], ["2026-08-16", 0.134], ["2026-08-17", 0.112], ["2026-08-18", 0.17900000000000002], ["2026-08-19", 0.135], ["2026-08-20", 0.1355], ["2026-08-21", 0.14100000000000001], ["2026-08-22", 0.12050000000000001], ["2026-08-23", 0.127], ["2026-08-24", 0.13], ["2026-08-25", 0.109], ["2026-08-27", 0.10900000000000001], ["2026-08-28", 0.133], ["2026-08-29", 0.12200000000000001], ["2026-08-29", 0.1515], ["2026-08-30", 0.1125], ["2026-09-01", 0.1005], ["2026-09-01", 0.10450000000000001], ["2026-09-02", 0.115], ["2026-09-03", 0.1295], ["2026-09-04", 0.10200000000000001], ["2026-09-05", 0.08950000000000001], ["2026-09-06", 0.11750000000000001], ["2026-09-07", 0.10850000000000001], ["2026-09-08", 0.11600000000000002], ["2026-09-09", 0.167], ["2026-09-10", 0.11900000000000001], ["2026-09-11", 0.164], ["2026-09-12", 0.139], ["2026-09-13", 0.14400000000000002], ["2026-09-14", 0.17400000000000002], ["2026-09-15", 0.169], ["2026-09-16", 0.14800000000000002], ["2026-09-17", 0.24400000000000002], ["2026-09-18", 0.20400000000000001], ["2026-09-19", 0.24900000000000003], ["2026-09-20", 0.254], ["2026-09-21", 0.21900000000000003], ["2026-09-22", 0.20400000000000001], ["2026-09-23", 0.20900000000000002], ["2026-09-24", 0.22900000000000004], ["2026-09-25", 0.21900000000000003], ["2026-09-26", 0.194], ["2026-09-27", 0.224], ["2026-09-29", 0.229], ["2026-09-30", 0.229], ["2026-10-01", 0.229], ["2026-10-02", 0.20800000000000002], ["2026-10-03", 0.20900000000000002], ["2026-10-03", 0.18400000000000002], ["2026-10-04", 0.20900000000000002], ["2026-10-06", 0.18300000000000002], ["2026-10-07", 0.19150000000000003], ["2026-10-08", 0.1905], ["2026-10-09", 0.1685], ["2026-10-10", 0.18400000000000002], ["2026-10-10", 0.159], ["2026-10-12", 0.14900000000000002], ["2026-10-13", 0.159], ["2026-10-14", 0.169], ["2026-10-14", 0.14550000000000002]], "breaks": [6, 10, 30, 35, 63, 70, 76], "changes": []}, "status": {"lt": "probe_failed", "bi": "monitoring", "headline": "tracked", "headlines": ["tracked"], "ltCopy": "This endpoint claims logprob support, but our probe could not obtain usable logprobs.", "biCopy": "This endpoint is actively monitored through its border inputs.", "ltDetail": "No logprobs returned", "biDetail": null, "reason": "This endpoint is actively monitored through its border inputs."}}]}, "n_endpoints": 1, "n_active": 1, "n_models": 1, "n_variants": 1, "first": "2026-07-24", "last": "2026-10-14", "lt": {"endpoints": 0, "years": 0.0, "changes": 0, "rate": null, "ci": null}, "b3it": {"endpoints": 1, "years": 0.22, "changes": 0, "rate": null, "ci": null}, "variants": [{"name": "fp8", "n_endpoints": 1, "lt": {"endpoints": 0, "years": 0.0, "changes": 0, "rate": null, "ci": null}, "b3it": {"endpoints": 1, "years": 0.22, "changes": 0, "rate": null, "ci": null}}], "changes": [], "endpoints": [{"slug": "stepfun2fstep-3.7-flash23stepfun2ffp8", "model": "step-3.7-flash", "modelSlug": "stepfun2fstep-3.7-flash", "org": "stepfun", "provider": "stepfun/fp8", "providerSlug": "stepfun", "methods": ["b3it"], "status": "stable", "lastChange": null, "recent": false, "nChanges": 0, "trace": [0.106, 0.1, 0.112, 0.119, 0.092, 0.1, 0.127, 0.123, 0.15, 0.13, 0.116, 0.136, 0.106, 0.116, 0.104, 0.131, 0.141, 0.162, 0.199, 0.241, 0.214, 0.207, 0.227, 0.215, 0.192, 0.183, 0.164, 0.158], "changeFracs": [], "headline": "tracked", "headlines": ["tracked"], "ltStatus": "probe_failed", "biStatus": "monitoring", "reason": "This endpoint is actively monitored through its border inputs."}, {"slug": "stepfun2fstep-5-preview23stepfun2ffp8", "model": "step-5-preview", "modelSlug": "stepfun2fstep-5-preview", "org": "stepfun", "provider": "stepfun/fp8", "providerSlug": "stepfun", "methods": [], "status": null, "lastChange": null, "recent": false, "nChanges": 0, "trace": [], "changeFracs": [], "headline": "retired", "headlines": ["retired", "errors_out"], "ltStatus": "probe_failed", "biStatus": "retired:no_bis", "reason": "Monitoring was retired: we could not find enough border inputs for this endpoint (since 2026-10-09). This endpoint claims logprob support, but our probe could not obtain usable logprobs (No logprobs returned)."}]}