Killed by Anthropic
Anthropic has shut down 11 AI products tracked here (8 models, 2 startups, 1 service). By year: 2024: 1, 2025: 3, 2026: 7. The first was Claude 1 (November 6, 2024); the most recent is Opaque Systems (October 19, 2026). Each tombstone links its source.
Opaque SystemsAcqui-hire · Startup2026-10-19Anthropic Legacy WorkbenchReplaced by Playground · Service2026-08-17Claude Opus 4.1Scheduled Retirement · Model2026-08-05Claude Sonnet 4 & Opus 4Model Deprecation · Model2026-06-15Stainless SDK GeneratorStrategic Acquisition · Startup2026-05-18Claude 3.7 SonnetModel Deprecation · Model2026-02-19Claude 3 OpusModel Deprecation · Model2026-01-05Claude 3.5 SonnetModel Deprecation · Model2025-10-28Claude 2Model Deprecation · Model2025-07-21Claude 3 SonnetModel Deprecation · Model2025-07-21Claude 1Model Deprecation · Model2024-11-06