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Parallax

A new perspective on parallel work.

Get it for MacRead the docs

Free DeepSeek V4.1 Flash when you sign up, and free DeepSeek and GLM on every plan from $5 a month.

Parallax on a Mac. A Codex session fixing failed Stripe webhooks stops to ask before it runs its tests, and waits for Approve.

Control all of your agents through the Captain. It keeps them aligned with you.

Your askShip the CSV export for billing and stop the webhook drops. Tests for both.
CaptainDone. Two pull requests, as you asked.
CSV export for billingClaude CodeDone

Pull request #745

Stop webhook dropsCodexDone

Pull request #746

Tests for bothCursor AgentDone

All tests passing

2.24real, merge-blocking problems found per pull request

Native code review that's better than anything on the market.

On Martian's open Code Review Benchmark, Parallax found more real, merge-blocking problems per pull request than any of the 20 other tools.

Valid, merge-blocking comments per pull requestMartian Code Review Benchmark · 50 PRs · 21 tools
  1. Parallax2.24
  2. GitHub Copilot1.38
  3. Qodo Extended1.38
  4. cubic1.38
  5. Augment1.36
  6. CodeRabbit1.34
  7. Qodo1.30
  8. Claude Code1.26
  9. Gemini Code Assist1.10
  10. Cursor Bugbot1.06
  11. Macroscope1.04
  12. Kodus1.04
  13. Devin1.04
  14. Greptile1.02
billing/export.ts+4
12const rows = groupBy(invoices, "customerId")
Review bot

Looks good. The grouping is clean and the stream is closed.

Parallax

You asked for one row per invoice. This groups invoices by customer, so three invoices for one customer export as one row. A test with exactly that fails on this change.

Checked with a testReviewed by Gemini and GrokFix in #747
13for (const [customer, items] of rows) {
14 stream.write(toCsv(customer, items))
15}

It reads the session, not only the diff.

Agents write better code now. When work goes wrong, it is usually because the session drifted from what you meant. Parallax keeps the whole session and reviews the work against it.

The Conifer router picks the best reviewers from labs other than the ones that wrote the code.

Automatically switch between subscriptions without losing progress.

Connect several Claude and Codex subscriptions. When one hits its limit, Parallax automatically moves the work to the next.

Personal 1Claude Max
100%of this week's limit used
Limit reached
Personal 2Claude Max
73%of this week's limit used
In use
Billing CSV exportStill running
Personal 3Claude Pro
12%of this week's limit used
Ready

Choose your plan. Free DeepSeek and GLM on every one.

  1. Parallax

    $5 a month

    • Free DeepSeek and GLM
    • Captains that keep every agent on course
    • Automatic fallback across your Claude and Codex subscriptions
    • Parallax reviewer for the code your agents write
    • Auto Research: agents test ideas against your eval
    • Cloud machines
    • Fast merge: every PR, one click
    • Checkpoints you can go back to
    • 40+ coding agents and 243 models

  2. Parallax Plus

    $10 a month

    Everything in Parallax, plus

    • $10 of API credit each month
    • Unused credit does not roll over

  3. Parallax Pro

    $50 a month

    Everything in Parallax, plus

    • $55 of API credit each month
    • Up to $10 of unused credit rolls over to the next month

Choose a plan in Parallax after you sign in. Change or cancel it in Settings.

Every plan includes

Parallax app

  • One box for every agent. Describe the work, pick the repo, the agent and the model, and press Enter.
1 / 8
  • Parallax reviewerNative code review of what your agents write, with the fixes it finds.
  • Auto ResearchAgents try ideas in parallel against a fixed eval, and only confirmed wins land.
  • Cloud machinesRun agents on machines in the cloud when your own is busy or asleep.
  • CheckpointsSnapshot a session's worktree and go back to it.
  • CaptureEvery session's transcript kept in Parallax, the receipts for what your agents did.

Every agent you already use, in one place.

Amp and Capy too, and the sessions you run in Codex cloud and Claude Code on the web.

  • Claude Code
  • Codex
  • Cursor
  • Gemini CLI
  • OpenCode
  • pi

Get Parallax

From $5 a month, with free DeepSeek and GLM when you sign up.

Download the .dmgRead the docs
After it opens

Parallax opens on its sign-in page. Continue with GitHub, then choose a plan. Your new account comes with DeepSeek V4.1 Flash free and 5 free reviews. If you sign up with an email instead, link GitHub in Settings and the reviews arrive then. No Claude or ChatGPT plan? Your agents can run on DeepSeek and GLM, free on every plan.

The first chat keeps a checklist for the rest, from adding a Claude or Codex account and connecting GitHub to starting your first session.

First open from the .dmg
  1. Open the .dmg and drag Parallax to Applications.
  2. Open Parallax from Applications. It is notarized by Apple, so macOS only asks once whether to open it: click Open.
On Linux

Unpack parallax-linux-amd64.tar.gz (the arm64 build is on the releases page) and run ./parallax daemon in that folder.

Open http://127.0.0.1:7878 in a browser to use it. There is no native window on Linux yet.