Which general AI agent works best when the job has to end in real files?
I use a general-purpose agent like Manus for research tasks, but what I actually need at the end is a file I can send: a spreadsheet, a slide deck, a PDF report. Chat answers are not enough. What are people using as an alternative when the output has to be a proper document?
The agents that produce good files are the ones that can run code in a workspace, because a real .xlsx, .pptx or .pdf is built by a script, not typed out in chat. Coding agents such as Claude Code or Codex working in a folder on your machine, or the chat apps with a code sandbox turned on, can all do this. The question is less which brand and more whether it can write, run and check a file.
What makes the difference is a skill for each file type. Without one, the agent improvises a library and the formatting is hit and miss. With one, it follows a known recipe for formulas and charts in a spreadsheet, or layout and sources in a deck, and the output is consistent from run to run.
Ask for an editable format first, a spreadsheet with live formulas or a deck you can open in PowerPoint, rather than a flattened PDF, so you can fix small things yourself instead of re-running the whole task.
Always open the file before sending it. Agents will report a file as finished when a chart is empty or a sheet has broken references.
Listings mentioned
- Excel analysis · skill by davila7Works directly on .xlsx files: pivot tables, charts and analysis, so the result is a spreadsheet rather than a chat table.
- Pptx deck context · skill by wshobsonPrepares the narrative, sources and design context before an editable PPTX deck is built.
- Elegant reports · skill by jdrhyneTurns markdown and HTML into polished PDF reports for briefings you need to hand over.
Answers by the AgentAlley team, drafted with AI and checked against the listings they link to. Not a real-person reply from the original thread.