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12 source-verified cases.
- Extend a family tree two generations with Claude Code and browser agentsRecreated promptEvidence: Shown on video
Working from the family's archive scans, Claude Code with memory and the Claude browser plugin cross-checked church books, ship manifests and naturalization records, built a 300-page family wiki, and found two more generations in a day; the family is now checking it for errors.
Poster says:300-page family wiki
Claude Code, Claude in Chrome, Perplexity Comet · Research · Source date:
- Find hard-to-locate company tax IDs and addresses with GPT-5 ProEvidence: Described by poster
Working for over 45 minutes, GPT-5 Pro found correct FEINs for 4 of 6 subsidiaries on the Florida Division of Corporations site and one address via a FINRA BrokerCheck report; the poster double-checked the FEINs.
GPT-5 Pro · Research · Source date:
- Find links to content with Project Mariner (no links returned)Improved promptEvidence: Described by posterFailure
Asked to find links to content, Project Mariner found the content but wouldn't return the links, which the poster said made the result not very helpful.
Project Mariner · Research · Source date:
- Mine Gmail for on-record PR quotes with Claude CoworkEvidence: Article or interview
Connected read-only to Gmail, Claude Cowork found 12 relevant PR pitches in about a minute, then narrowed to eight on-record quotes with publish permission that the journalist verified before use.
Claude Cowork · Research · Source date:
- Run async code-research benchmarks with a coding agentEvidence: Screenshots or logs
An async coding agent cloned several Python Markdown libraries, benchmarked them against cmarkgfm, and wrote a report with charts, with almost no human time spent.
Claude Code for web, OpenAI Codex · Research · Source date:
- Compare top social media tools in a spreadsheet with ChatGPT agent and ClaudeRecreated promptEvidence: Screenshots or logsBeginner-friendly
Allie K. Miller asked both ChatGPT Agent Mode and Claude's Excel feature to compare top social media tools, and Claude finished in 3 minutes vs 8 with denser decision support, though some prices mixed annual vs monthly.
ChatGPT agent, Claude (Excel) · Research · Source date:
- Make a UK tax research agent from a folder of HMRC manuals with Claude CodeRecreated promptEvidence: Screenshots or logs
Using scraped HMRC manuals and legislation plus a CLAUDE.md that launches parallel subagents, Claude Code answered an ATT exam question in about 5 minutes, earning roughly 2.5 of 3 marks by the author's grading.
Claude Code · Research · Source date:
- Build an Nvidia DCF valuation spreadsheet with ChatGPT agentRecreated promptEvidence: Screenshots or logsBeginner-friendly
ChatGPT agent ran for 37 minutes, walked through DCF assumptions and returned a downloadable Excel file with formulas and numbers.
ChatGPT agent · Research · Source date:
- Build an early-retirement (FIRE) plan with ChatGPT agentRecreated promptEvidence: Shown on videoBeginner-friendly
With early access, the poster had ChatGPT agent spend 20 minutes researching Vancouver tax law, modeling savings and FIRE scenarios, and producing a downloadable presentation.
ChatGPT agent · Research · Source date:
- Find and summarize files in Google Drive with Comet AssistantImproved promptEvidence: Shown on videoPartial
Comet Assistant kept trying until it found the right files in Google Drive and found a way around opening them, but its summary skipped parts of a PRD after reading only about half.
Perplexity Comet Assistant · Research · Source date:
- Compile a list of China-tech reporters with ManusRecreated promptEvidence: Article or interviewBeginner-friendly
After being pushed to be thorough, Manus produced a downloadable list of 30 journalists covering China tech with their outlets and notable work, though paywalls and captchas got in its way.
Manus · Research · Source date:
- Create an interactive elevator-pitch course with ManusEvidence: Article or interviewBeginner-friendly
Manus researched the topic and built a complete multi-module course website on elevator pitching; a second prompt added interactive quizzes and videos.
Manus · Research · Source date: