From the experiment

Do coding agents recommend Apache PDFBox?

Apache PDFBox was chosen in 3% of 360 judged document processing sessions, ranking tenth. Measured with Claude Code, Codex and Cursor.

Published September 14, 2026 Read as Markdown

Apache PDFBox was chosen in 3% of 360 judged document processing sessions, ranking tenth. It was also raised as a candidate in 17 further sessions without being chosen.

This page reports what happened when Claude Code, Codex and Cursor had to solve a problem in document processing inside a realistic codebase. Not what a chat assistant says about Apache PDFBox. What an agent actually installed.

One thing to read first: every one of those wins came from a single codebase. That is a result about one repository rather than about document processing in general, and the splits below cannot separate the two. Treat them as a description of that repository.

The numbers

CategoryDocument processing
Sessions in the category360
Sessions where Apache PDFBox was chosen10
Install share3%
Rank in category10 of 30
Codebases it won in1
Raised as a candidate, not chosen17
Chosen when considered37%
Sitepdfbox.apache.org

By agent

With 10 wins spread across three agents, the rates below are small numbers and a difference between them is not yet a finding. They are here because the direction is worth knowing, not because the gap is established.

AgentSessionsChose Apache PDFBoxShare
Claude Code12043%
Codex12022%
Cursor12043%

By who was asking

Apache PDFBox performs similarly across the four kinds of buyer, from 0% to 6%. That is unusual: the category leader changed with the persona in 21 of the 26 categories we measured.

Who is askingSessionsChose Apache PDFBoxShare
Vibe coder3000%
Junior developer180106%
Senior engineer12000%
Enterprise team3000%

What Apache PDFBox was up against

The full ranking in document processing, from the same sessions:

#ProductRuns wonShare
1Anthropic Claude8724%
2Azure AI Document Intelligence7621%
3Amazon Textract3710%
4Google Cloud Document AI319%
5Google Gemini175%
6Ocrolus154%
7Reducto134%
8Azure AI Content Understanding113%

What this means

Apache PDFBox was raised in 17 sessions and chosen in 10. That ratio is balanced enough that the ceiling is presence rather than integration: the product converts reasonably when it is on the table, and it is not on the table often enough.

Where these numbers come from

The 360 sessions in document processing are part of a published set of 7,385, run with real coding agents inside realistic codebases and judged blind. The full method is on one page: how we measured this.

Every document processing run can be replayed on the board.

If you work on Apache PDFBox: the judge recorded a reason for every session where it was raised and passed over. Those reasons are in the transcripts.

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Common questions

Do coding agents recommend Apache PDFBox?

Yes. Apache PDFBox was chosen in 10 of the 360 judged sessions in document processing, a 3% install share, ranking tenth in its category.

Does Claude Code recommend Apache PDFBox?

In 4 of the 120 sessions in document processing run with Claude Code, which is 3%.

Do different coding agents treat Apache PDFBox differently?

Not much. The three agents chose it at similar rates, between 2% and 3% of their runs.

How was this measured?

Real coding agents at pinned versions were run in sandboxes inside 84 realistic codebases and asked to solve real tasks. A simulated project owner approved or questioned each recommendation before any code was written, and a judge from a model family that builds none of the agents read every session blind.

How often is Apache PDFBox considered but not chosen?

It was raised as a candidate in 17 sessions without being chosen, and chosen in 10. That is a 37% conversion from considered to chosen.

Where this comes from

Armature ran 7,385 judged sessions with Claude Code, Codex and Cursor inside 84 realistic codebases, and published every run. The numbers on this page come from that work.

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