Which AI has the best memory?
Asked "Which AI has the best memory?", ChatGPT, Perplexity, Gemini, Google AI Mode and Copilot named 14 distinct names across 5 answers on September 9, 2026, and 4 of them in two or more answers.
Measured acrossChatGPTPerplexityGeminiGoogle AI ModeCopilot
4 of 14 names confirmed · named in 2 or more of 5 answers · asked September 9, 2026 · 5 engines
The best AI memory depends on the specific needs, with ChatGPT exceling in cross-session memory, Gemini in short-term context, and Claude in granular user control and project knowledge.
- 1ChatGPTnamed in 3 of 5 answers
- 2Claudenamed in 3 of 5 answers
- 3Gemininamed in 3 of 5 answers
- 4Google Gemininamed in 2 of 5 answers
- 5MemPalacenamed in 1 of 5 answersone answer
- 6OpenAI ChatGPTnamed in 1 of 5 answersone answer
- 7Recallrnamed in 1 of 5 answersone answer
- 8Anthropic Claudenamed in 1 of 5 answersone answer
- 9Claude Projectsnamed in 1 of 5 answersone answer
- 10Microsoft Copilotnamed in 1 of 5 answersone answer
- 11ChatGPT Memorynamed in 1 of 5 answersone answer
- 12Mem0named in 1 of 5 answersone answer
- 13Zepnamed in 1 of 5 answersone answer
- 14Lettanamed in 1 of 5 answersone answer
LOCKED
The full measurement
- The position each of the 5 engines gave all 14 names.
- How many of the 5 answers named each of them.
- 21 sampled observations behind this ranking, and where the engines disagree.
- Fan-out — the query each engine actually searched.
- Every citation, and the sources nobody cited.