Does v0 Remember Between Sessions? Chat Context, Knowledge, and Where It Stops

Short answer: inside one chat, yes. Across chats, projects, and the rest of your tools, mostly no, unless you wrote the context down yourself in the places v0 calls Knowledge and custom instructions.

That distinction matters because v0 feels continuous while you work in it. You return to a chat, the conversation is still there, the generated app is still there, and iteration picks up where it left off. It is easy to assume a learned memory is running underneath. What is actually running is simpler: a persistent chat, a persistent project, and a small set of hand-written instructions that get sent along with your messages.

What carries inside a single chat

Vercel's community team puts it plainly in answer to a direct long-term memory question: v0 does remember the context of the whole chat. Keep working in the same chat and earlier prompts, decisions, and generated versions remain part of the context the model can use.

There are two catches built into that answer. First, the remembering is the chat itself, not a separate memory store that was distilled from it. Second, as the context gets larger, output quality can suffer if a new prompt is not precise and descriptive. A long chat is therefore both the memory and the risk: everything is in there, and the useful parts compete with everything else.

Returning to the same chat is a session continuing, in practice. Starting a new chat is where the continuity ends.

Chats do not talk to each other

Chats in v0 are independent of each other. They live under a project, and Vercel's guidance is to think of each chat like a branch: use separate chats for work that would make sense on separate branches, and expect them not to share conversation context with each other.

That has a practical consequence operators run into quickly. Work out an API integration in one chat and a matching interface in another, and the second chat does not automatically know what the first one decided. The shared ground is the project, not the conversations inside it. Files, deployment settings, and the codebase belong to the project; the reasoning that produced them belongs to the chat where it happened.

If a decision needs to survive across chats, it has to be moved out of the chat where it was made.

The memory you write yourself: instructions and Knowledge

v0 gives you three hand-written places to put context, and they have different scopes.

Account custom instructions live in Settings, under General. They hold your personal preferences, apply to all generations across all your projects and chats, and are included in all messages you send. Vercel's advice is to keep them brief but focused, precisely because they travel everywhere.

Project instructions live under a project's Knowledge tab. They are sent with every message within that project and behave like system instructions for that project: file conventions, structures to follow, rules the generated code should respect. They are shared, so if several people work on the project, the same instructions shape everyone's messages.

Project sources also live under Knowledge, but they work differently. Sources are files v0 can reference for extra context when it decides they are relevant to a message. They are not attached to every message. Documentation for a library the project uses is a good source; a style guide that must always apply belongs in project instructions instead, because a source may simply not be read on a given turn.

Notice the shape of all three: none of them is learned. Nothing in this system watches your chats and updates itself. If a preference, convention, or decision is not written into one of these places by a person, it lives only in the chat where it came up.

Where v0 memory stops completely

At the project border. Account instructions cross projects; project instructions and sources do not. A new project starts with its own empty Knowledge, no matter how much a previous project taught you about how you like to build.

At the chat border. As covered above, a new chat in the same project does not inherit the conversation of the old one. The project files carry over; the discussion does not.

At v0's door. This is the border that matters most for automation work. An app built in v0 usually does not run alone for long. Scheduled agents in n8n or Make process its signups, a cron agent checks its data overnight, another tool drafts its follow-ups. None of v0's context, not the chat, not the Knowledge, not the account instructions, is visible to any of that. The scheduled agent starts its run knowing nothing about what was decided while building, and what the agent learns overnight never flows back into v0.

Three ways to work with those borders

1. Keep one working chat per coherent piece of work. Since the chat is the memory, splitting a single line of work across many chats fragments the context. Branch deliberately, for genuinely separate work, not by habit.

2. Promote decisions into Knowledge the same day. When a chat settles something durable, a convention, a schema choice, a naming rule, write it into project instructions. If it should apply everywhere, put the short version in account custom instructions. Memory that stays only in a chat is memory the next chat does not have.

3. Give the work outside v0 a shared memory of its own. The build is only half the system. The agents around it need a memory that is not scoped to one chat, one project, or one platform. Vilix AI is a cloud-hosted memory layer that tools connect to over MCP, with zero infrastructure to run. The same memory is available in your chat tools, coding tools, and scheduled automations, so a decision made in one place is present in the next run somewhere else. It stores full conversation history, not just extracted facts, so the actual exchange behind a decision can be revisited. The free plan is free forever, the 7-day Pro trial needs no credit card, and your memory can be exported or deleted at any time.

The bottom line

v0 remembers between sessions in the way a persistent workspace remembers: the chat keeps its context, the project keeps its files, and the instructions you wrote keep being sent. That makes returning to work feel continuous, and inside one chat and one project, it is.

What v0 does not have is a learned memory that crosses chats on its own, carries project knowledge into a new project, or reaches the scheduled automations running outside it. When the re-explaining starts, it usually starts at one of those borders, and the fix is to write the durable parts down inside v0, and to give everything outside v0 one shared memory they can all read.