M 
Mem
The "AI second brain" got absorbed into the assistants themselves.
YES
why this verdict
Cancel it — switch to ChatGPT Memory
ChatGPT Memory and Obsidian now cover the same core job on a free tier, so the $15/mo is optional.
- A named launch, not a vibe named, unlinked
- Long-context chat + memory features. OpenAI, April 30, 2024 — no announcement link recorded yet.
- How much of the job it covers all of it editorial call
- The whole core job — the thing the subscription was actually for.
- Is there a free way to do it? yes
- 2 of 2 listed replacements have a usable free tier: ChatGPT Memory and Obsidian.
- What the call is worth $180/yr
- $15/mo at the entry paid tier — $180 a year per seat.
Reason composed from the fields above missing: announcement linked recorded: free replacement listed recorded: two or more escape hatches
- Threatened by
- OpenAI
- Since
- April 30, 2024
- List price
- $15/mo
- Per year
- $180
The backstory
Mem promised an AI note-taker that surfaces the right note at the right time. As ChatGPT and Claude added persistent memory and huge context windows, the standalone "AI-organized notes" pitch lost its edge. Mem restructured and its original consumer app faded.
Escape hatches
switching could free up $180/yr C 
ChatGPT Memory Persistent memory across conversations.
chat.openai.com open_in_new O 
Obsidian Local-first notes you actually own.
obsidian.md open_in_new2 of 2 replacements have a usable free tier.