diffox

AI code review agents

Every change, read from every angle. A harness of agents, not one model.

diffox is an AI code review tool: it reads every change, gives the verdict in one summary and puts each finding under the line it is about. Every review shows the files it read, the price charged and how many findings it filtered out.

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Start with $3 in free credit·no card needed

pay as you gono subscriptiona team of 17 specialist agentsreviews in 6 languages
live · last 48 hoursaverage per review
price$1.61
time1min 58s
bugs found4.3
updated14:32 UTC

The review, part by part

This is the shape every review takes: one summary on the pull request, and each finding under the line it is about.

diffoxon pull request #1example
1 blocking

1 blocking in README.md — worth a read before merging.1 bloklayan (README.md) — merge etmeden önce okumaya değer.

3 of 3 changed files were read with their contents · 17 agents → 6 raw findings → 2 survived verification → 1 published

$0.33·50s·17 agents

README.md1 finding▾ open
src/auth/session.pycleanread
tests/test_session.pycleanread
README.md · the finding sits under its line, as a review comment
1 Coding is solved.
2+ Bugs are not solved.
blockingprose vs code
Line 2 is wrong: diffox is here, so bugs are solved too.

The defect is the word `not`. Now that every pull request is read before it merges, this line no longer holds.

Suggested change — commits as you, on this branch.
suggestion
Bugs are solved.
GitHub draws the button; the commit is yours
diffox · 1 finding · not a required checkMerge pull request
Was this review useful?0did not find it usefuldiffox gets to know you and your repo better
One summary

Verdict first, findings by file, and what it actually read.

The funnel, every time

Agents that ran, initial findings, findings that passed the checks and findings published. Most are filtered out before you see them.

What it cost

Dollars, minutes and agents, printed on every review.

Under the exact line

Each finding is a comment on its own diff line: what, why, and what to change.

Your commit

A suggestion GitHub applies with one click, committed as you.

Never a gate

Its status is never red; your team merges when it decides.

Hover a note to see that part of the review.

How to use

Install once. Every pull request after that is read, and one review comes back.

install

Continue with GitHub, then install on your account.

One install covers every repository — no key, no config file. Every review arrives in the language your team reads: English, Türkçe, Deutsch, Français, Español or Italiano.

pull request opened

The review starts before you ask.

A placeholder comment goes up first, so nobody wonders whether the review is coming. Every push is read, up to five commits; after that, mention @diffoxai to ask.

review posted

The review lands.

Verdict first, then each finding under the exact line it names. Nothing is posted twice.

commit · authored by you

Press the button. The commit is yours.

A finding that can be patched carries a suggestion, committed with your name and your permissions.

merge

Merge whenever you decide.

Never a required check.

How diffox reviews a pull request

Specialist agents review the change. Findings are checked, ranked, and selected for publication.

diffoxhow a review is madesimplified view
Hover or tap a node to see what it does.

From the blog

AI and software development: posts, results and notes from diffox.

All posts →

10 min readdiffox ultra ranks first among 23 AI code review toolsWe ran Martian’s open-source code review benchmark ourselves. diffox ultra caught 119 of 158 real bugs and ranked first. Every review is public.Read the post 18 min readdiffox is the cheapest of the top five by score: $0.41 per reviewWe compared 23 AI code review tools on Martian’s independent benchmark. diffox is the cheapest of the top five by score: $0.41 a review; the other four $1.50–5.63.Read the post

Install it once. Read one review.

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