Claude Context Window Exceeded — How to Fix It

Start a New Conversation

The quickest fix is to open a fresh chat, which resets the context window to zero. Before doing so, copy any critical information, decisions, or outputs from the old conversation that you will need going forward. This is ideal when the task has naturally reached a stopping point or a new phase is beginning.

Use Projects to Manage Context Across Sessions

Claude's Projects feature lets you store persistent instructions and reference documents at the project level, separate from individual conversation context. By placing background information inside a Project's knowledge base rather than pasting it into every chat, you avoid consuming conversation tokens unnecessarily. This is the most scalable approach for ongoing workflows that require consistent context.

Summarize Previous Exchanges Into a Single Message

Ask Claude to produce a concise summary of the conversation before the limit is hit, then paste that summary into a new chat as the opening message. A tight summary of a 50,000-token conversation might only occupy 1,000–2,000 tokens, freeing up most of the new window for fresh work. Focus the summary on decisions made, key facts established, and the current task state.

Split Large Documents Into Chunks

Instead of pasting an entire document at once, divide it into logical sections — chapters, sections, or fixed token blocks — and process each chunk in a separate message or conversation. Ask Claude to output a structured summary or extracted data for each chunk, then combine the results yourself. This approach works well for document analysis, translation, and data extraction tasks.