OneFile is a free file combiner, not an AI. It merges your PDFs into one file. You send that file to Claude, ChatGPT, or Gemini, and ask cross-corpus questions across 50 to 300 papers, not the 10-to-20-per-prompt cap every AI imposes.
Open source, MIT licensed. Output works with Claude, ChatGPT, Gemini, Grok, and any LLM.
Concrete uses, with a sample prompt for each. None of these replace your judgment, they replace the mechanical first pass.
Combine 50, 100, or 200+ PDFs into one upload. Ask Claude or ChatGPT to identify common themes, contradictions, methodological gaps, and underexplored questions across the entire corpus, not just the abstracts.
Sample prompt
"Across these 60 papers, what are the dominant methods and where do authors disagree on findings?"
Upload every chapter at once instead of pasting them one by one. AI can check argument continuity, flag contradictions between chapter 2 and chapter 6, and catch references you defined in one chapter but used differently in another.
Sample prompt
"Read all 7 chapters of my dissertation. Where do my framing and conclusion contradict each other?"
Pull the original paper, its data appendix, and the entire replication codebase into a single prompt. AI can compare what the paper claims to do versus what the code actually does, surfacing methodology drift.
Sample prompt
"Compare the methods section of this paper to the actual R scripts. Are there any deviations?"
Combine your inclusion criteria, methodology document, and all candidate papers in one go. AI can pre-screen for relevance, extract structured data, and flag papers that don't actually meet your criteria.
Sample prompt
"Using my PICO criteria, screen these 120 abstracts and tag each as include, exclude, or uncertain."
Upload your last three funded proposals, the call for the new grant, and your draft together. AI can identify what worked in your prior wins, where the new draft deviates, and what reviewers tend to flag.
Sample prompt
"Using my prior funded R01s, where does this draft fall short of the typical NIH reviewer expectations?"
Combine the manuscript you're reviewing with its referenced papers and your journal's review guidelines. AI can pre-check whether claims are supported, references are accurate, and the methods are sound.
Sample prompt
"Read this manuscript, the journal's review template, and the 12 papers it cites. Flag any claim that the cited paper doesn't actually support."
Four steps from your Zotero folder to a verified synthesis.
Any folder of PDFs works. BibTeX optional for citation metadata.
OneFile extracts text and preserves filenames so AI can cite back.
Claude's 200K context handles 50 to 100 papers per conversation.
Smith (2023) reports X...
verifiedJones (2024) finds Y...
check sourceAI is fast at first-pass synthesis. Always spot-check citations.
Unlimited papers
Combine 50, 100, 300+ PDFs at once
Open source
MIT licensed, self-host if you prefer
Nothing stored
Text processed in-browser, PDFs discarded after extraction
For ChatGPT-specific upload questions, see our full FAQ.
FEATUREDRun an AI-assisted literature review across 50 to 100+ papers without hitting upload limits. The free OneFile workflow, prompts that work at scale, and how to verify AI output.
FEATUREDSide-by-side comparison of file upload limits for ChatGPT, Claude, Gemini, Grok, and Perplexity in 2026. Max file size, supported types, free vs paid limits, and how to bypass them all.
FEATUREDSay goodbye to hitting ChatGPT's file upload limit. Combine unlimited files into one and upload instantly. Free tool, no account, works on Free & Plus plans.