Taranjeet Singh (pictured above, proper) has launched six corporations, with some failing and others seeing various levels of success. His seventh, Mem0, may very well be his defining one.
The startup begins with the premise that giant language fashions can’t keep in mind previous interactions the way in which people do. If two individuals are chatting and the connection drops, they will resume the dialog. AI fashions, against this, overlook every thing and begin from scratch.
Mem0 fixes that. Singh calls it a “reminiscence passport,” the place your AI reminiscence travels with you throughout apps and brokers, identical to e-mail or logins do in the present day. The YC-backed startup, launched in January 2024, has raised $24 million ($3.9 million in beforehand unannounced seed funding and a $20 million Sequence A).
AI-focused early-stage fund Foundation Set Ventures led the Sequence A, with participation from present buyers Kindred Ventures and Y Combinator, in addition to new backers together with Peak XV Companions and the GitHub Fund.
Notable angels embody Dharmesh Shah (HubSpot), Scott Belsky (ex-CPO Adobe), Olivier Pomel (Datadog), Thomas Dohmke (ex-CEO GitHub), Paul Copplestone (Supabase), James Hawkins (PostHog), Lukas Biewald (Weights & Biases), Brian Balfour (Reforge), Philip Rathle (Neo4j), and Jennifer Taylor (former president, Plaid).
Having a number of leaders who helped form the fashionable software program ecosystem guess on Mem0 (pronounced “mem zero”) underscores its promise, and the traction from the four-person group backs it up.
To date, the open supply API, which claims to be essentially the most extensively adopted reminiscence framework for AI builders, has surpassed 41,000 GitHub stars and recorded over 13 million Python package deal downloads. In Q1 2025, Mem0 processed 35 million API calls. By Q3, that quantity jumped to 186 million, rising roughly 30% month over month.
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Past open supply adoption, greater than 80,000 builders have signed up for its cloud service. Mem0’s cloud API now handles extra reminiscence operations than some other supplier and serves because the unique reminiscence supplier for AWS’s new Agent SDK.
In early 2023, Singh was nonetheless in Bangalore, India. He began his profession as a software program engineer at Paytm, considered one of India’s Most worthy startups, earlier than turning into Khatabook’s first development engineer. He stop in late 2022, simply because the ChatGPT wave was about to crest, and constructed one of many first GPT app shops, which scaled to over one million customers.
That have led him to create Embedchain, an open supply challenge that lets builders index, retrieve, and sync unstructured information. Because the challenge took off, incomes greater than 8,000 GitHub stars, Singh despatched over 200 chilly emails to founders, buyers, and engineers in Silicon Valley.
“I reached out to virtually each well-known tech entrepreneur that you just might need heard of and was fairly persistent. A few of them responded, and after listening to us out, scheduled us to fly from Bangalore to San Francisco inside 36 hours,” Singh mentioned.
As soon as within the U.S., Singh reconnected together with his longtime good friend and now co-founder and CTO, Deshraj Yadav, who had led the AI Platform at Tesla Autopilot. Collectively, that they had beforehand constructed EvalAI, an open supply Kaggle various that grew to 1.6K GitHub stars.
Whereas experimenting with Embedchain, the duo launched a meditation app impressed by Indian yogi Sadhguru. The app went viral in India, however Singh says customers saved sharing the identical suggestions: “Hey, I’m on this meditative journey, however the app doesn’t keep in mind that.” In order that they pivoted from Embedchain to Mem0 to resolve that drawback.
The thought of reminiscence for AI isn’t new, nevertheless it’s shortly turning into a important battleground. OpenAI, for example, started testing long-term reminiscence options in ChatGPT in early 2024, and its CEO, Sam Altman, has hinted that persistent reminiscence will probably be central to OpenAI’s upcoming {hardware} gadget. Different AI labs are additionally launching experimental reminiscence techniques for his or her brokers.
Singh argues that whereas large AI labs are constructing reminiscence techniques, they’ve little incentive to make them transportable or interoperable. “Reminiscence is turning into considered one of their key moats now that LLMs are getting commoditized,” he mentioned.
He explains that whereas shoppers can get pleasure from persistent, personalised experiences in ChatGPT, builders who need to construct functions — say, a finance companion that remembers a person’s buying and selling historical past — want an open, impartial resolution like Mem0.
“We would like builders to supply day-one personalization by a shared reminiscence community,” Singh mentioned. “Consider it as Plaid for reminiscence. That’s act two. For now, we’re laser-focused on constructing the most effective reminiscence product potential.”
Mem0’s framework lets builders retailer, retrieve, and evolve person reminiscence throughout fashions, functions, and platforms. It’s model-agnostic, appropriate with OpenAI, Anthropic, or any open supply LLM, and integrates straight with frameworks like LangChain and LlamaIndex.
Builders use Mem0 to create functions that develop smarter with each interplay: remedy bots that recall previous conversations, productiveness brokers that keep in mind private habits, and AI companions that adapt over time. Clients vary from indie builders to enterprise groups constructing copilots and automation instruments.
“We backed Mem0 from its earliest days — even earlier than YC — as a result of reminiscence is foundational to the way forward for AI,” mentioned Lan Xuezhao, founder and companion at Foundation Set Ventures. “We’re doubling down because the group continues to deal with one of many hardest and most vital infrastructure challenges: enabling AI techniques to construct lasting, contextual reminiscence.”
Different early-stage startups within the reminiscence house embody Supermemory (whose founder briefly labored at Mem0), Felicis-backed Letta, and Reminiscences.ai.
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