1
The self-serve API platform is shutting down: new signups/top-ups closed 2026-08-03; API calls stop 2026-09-03.
Move to Open-weight Yi on Hugging Face
Death calendar
Dated sunsets already in the catalogue. As of 2026-09-02.
Next 90 days
20
The team's work became Notion Mail — which is itself announced to close 2026-09-22. The graveyard may see it again.
22
OpenAI announced no successor. The API itself dies 2026-09-24; video buyers moved to Veo, Runway, Kling and Seedance.
28
New Hunyuan API capabilities are on TokenHub; the old 混元大模型 platform stops new purchases and shuts down 2026-09-30.
Move to Tencent TokenHub (same card)
Already buried
Flowise
died 2026-08-31
Company wind-down — the team says developers moved from rigid low-code workflows to coding agents (Claude Code/OpenClaw).
Void
died 2026-06-02
Deprecated by Glass Devtools — the repository was archived on June 2, 2026 and is no longer accepting contributions.
Roo Code
died 2026-05-15
Roo Code Inc shut down the VS Code extension (plus Roo Code Cloud and Router) and pivoted to a cloud agent.
Sora
died 2026-04-26
OpenAI discontinued the Sora web app and API — the generative video product that made text-to-video mainstream.
Play.ht
died 2025-12-31
Team acquihired by Meta (July 2025); platform shut down permanently.
Supermaven
died 2025-11-21
Sunset by Anysphere one year after acquisition to consolidate users and technology into Cursor Tab.
Woebot
died 2025-06-30
Woebot Health retired the consumer app — FDA marketing-authorization costs and LLM-in-therapy uncertainty made the direct-to-consumer model unsustainable.
Tome
died 2025-04-30
The team shut down Tome Slides after failing to make AI presentations a business, pivoting to an AI-native CRM.
Humane AI Pin
died 2025-02-28
HP acquihired the company for its Cosmos AI platform, patents and talent, then sunset the AI Pin hardware and services.
Skiff
died 2024-08-09
Acquired by Notion in February 2024 and sunset as a standalone product.
Artifact
died 2024-04-02
Acquired by Yahoo, which shut down the standalone app and absorbed the personalization tech into Yahoo News.
Microsoft Cortana
died 2023-08-01
Microsoft sunset the standalone assistant to replace it with Windows Copilot and the broader Copilot stack.
Galactica
died 2022-11-17
Meta paused the public demo after researchers showed it generated plausible but false scientific text and fabricated citations.
Kite
died 2022-11-16
Acquihired by Affirm in June 2021, then sunset in November 2022 after failing to monetize 500k monthly developers.
Dates are pulled from the catalogue only when they sit next to a sunset verb. No rumours, no invented deadlines. The Signals page carries the live-status board; this page is the calendar view.