Ajax vs. Billables.ai: Which AI Timekeeper Is Right For Your Law Firm?

Most law firms lose about 12% of their billable hours simply because they log their time manually or use tools that don't capture all their hours.

While both Ajax and Billables.ai automate time capture with AI, their underlying approaches are quite different.

Ajax uses a native desktop application to read your screen (while protecting your information with rolling data deletion, SOC 2 compliance, and strict bans on model training), intelligently groups your fragmented work across the day, and automatically writes your narratives for you.

Billables.ai relies on API integrations to pull time data from your specific apps (MS Word, your email, your Zoom, etc) and creates a chronological checklist of your daily activities.

In this guide we will break down the key differences in features, privacy, and pricing to help you decide which tool is the right fit for your firm's specific workflow.

What is Ajax?

Ajax is an AI-native timekeeping tool built specifically for lawyers that acts as an automated associate.

It reads your screen content to automatically generate, group, and attribute time entries across your entire workday.

Ajax is built on a privacy-first architecture. It uses rolling, automatic data deletion so it never hangs onto your data, it maintains full SOC 2 compliance, it contractually prohibits downstream vendors (like OpenAI) from retaining your information or using it for model training - and no MP (or anyone else for that matter) can ever see your screen recordings.

The result is that you’re able to easily capture lost billable hours and automate your busy work without sacrificing on privacy.

Advantages

Ajax captures work across any application without relying on integrations with your specific software tools. 

And it automatically groups your tasks and writes your billing narratives. 

This helps capture billable hours that would otherwise be missed and saves time by automating your tedious, low-value time tracking tasks:

• Universal capture: It tracks work across your entire digital environment without missing activities between supported apps.

• Automated narratives: It writes customized, client-ready narratives based on your actual work.

• Intelligent task grouping: It combines fragmented tasks (such as 30 minutes of reviewing a case in the morning and 90 minutes of drafting later that night) into a single coherent entry for you automatically.

• Smart matter attribution: It uses a legal-specific learning system to attribute work based on contextual keywords from documents and emails.

• White-glove onboarding: Ajax ingests your firm's billing guidelines and run the software silently for two days before kickoff, ensuring your lawyers log in to real, completed entries on day one.

Disadvantages

Ajax's screen recording workflow comes with a few trade-offs:

• Higher price point: Because reading all the pixels on your screen is computationally intensive, Ajax operates at a higher price point than lighter, integration-based tools like Billables AI. However, the billable time recovered typically pays for itself within the first two weeks.

• Brief learning curve: Ajax’s user interface features a left-to-right approval flow and cross-day grouping rather than a traditional chronological list, which can initially require a brief adjustment period for users accustomed to standard timesheets. But once you get used to it, customers tend to find it more effective.

• Perceived privacy concerns: While Ajax keeps your data private and secure by instantly discarding your information, maintaining SOC 2 compliance, and strictly blocking any AI model training by it or it’s vendors, some people will still be initially concerned about the privacy of screen capture technology.

Who it's a good fit for

Ajax is built for lawyers who want to capture lost hours and automate the busywork of time tracking:

• Growth-oriented law firms looking to increase revenue by capturing lost hours and reduce costs by automating the busywork of time keeping.

• Firms suffering from poor timekeeping compliance, as Ajax’s "done for you" approach drives dramatically higher adoption within firms.

• Firms focused on immediate ROI through recovered billable time.

What is Billables.ai?

Billables.ai is also an AI-native time tracking tool. 

But it focuses on capturing time through seamless integrations with the software lawyers already use, such as Microsoft Word, Google Chrome, email, and Zoom.

Instead of requiring a native desktop application, it pulls metadata from these connected apps to create a straightforward, chronological log of a lawyer's day.

For many users, this lightweight footprint is exactly what they are looking for. 

It provides a familiar, checklist-style interface where attorneys can review activities in the exact order they occurred, check tasks off the list, and simply hit "approve" to finalize their time.

Advantages

Billables.ai is an affordable option that connects directly with your existing tools rather than reading your screen:

• Cost-effective: It operates at a lower price point than Ajax.

• No screen capture: By relying entirely on integrations to pull your data, it’s a good option for lawyers who are strictly opposed to screen capture technology.

• Familiar interface: Its chronological layout offers a familiar, linear checklist for users who prefer to review their day in the exact order it happened.

Disadvantages

The reliance on integrations and a linear timesheet introduces some limitations:

• Blind spots: Because it depends on specific integrations, any work performed outside of those connected apps goes unlogged.

• Integrations can disconnect: If an integration goes down or gets disconnected, the data capture stops entirely.

• Manual grouping required: Since Billables AI provides you with a chronological list of tasks, you still have to manually link and group related tasks (for example if you worked on the same matter at different points in the day). Which leaves you doing busy work each day to capture your time.

Who it's a good fit for:

Billables is a great choice for lawyers who use a predictable tech stack and want a simple, chronological checklist to manage their daily time entries.

• Law firms with a consistent set of tools where their integration coverage is strong.

• Cost-conscious practices looking for a budget-friendly option.

• Users who strictly avoid screen-reading software.

Ajax vs. Billables.ai: A side-by-side comparison

The key difference between these two tools comes down to how they capture your tasks and the administrative workload that’s required.

Because Billables.ai depends on integrations, it can capture the activity from your connected tools (like Outlook, emails, or Zoom calls) without needing a native app or reading your screen. It creates a chronological list of activities, which provides a familiar way to review your day.

Ajax captures all the work that happens on your device without needing any integrations. Because it understands the context of your screen, it automatically categorizes and groups your work for you, and automates the manual effort of reconstructing your day.

However, Ajax records your screen and Billables.ai does not. Even though your data is private and secure, this is still a deal breaker for some firms.

Here is how their specific features stack up against one another.

Privacy and Security

Billables.ai avoids screen reading by relying on integrations to pull data. Ajax secures it’s screen capture through strict data silos and automatic deletion.

Because Billables.ai does not use a desktop app to read the screen, it provides immediate comfort for users who prefer integration-only tracking methods. 

It pulls the necessary metadata (like the name of a Word document or the participants on a Zoom call) and leaves the rest alone.

Ajax requires deeper access to give you deeper automation:

• The content on your screen is processed to generate entries and then automatically deleted on a rolling basis. 

• Ajax is SOC 2 compliant and does not use client data to train models. 

• And strict individual silos are enforced. 

Nobody at your firm (not even the managing partner) can monitor an individual lawyer's screen activity through the tool.

Task Grouping

As you’re well aware, you rarely start and finish a task in one sitting. 

You might draft a motion for 20 minutes before a partner calls, return to it after lunch for an hour, and give it a final 15-minute review before heading home.

Billables.ai presents a linear checklist to approve. It lists these fragmented touches chronologically, requiring you to categorize entries manually to create a cohesive narrative for the client invoice.

Ajax intelligently clusters related work across the entire day. 

It automatically combines your morning drafting, afternoon editing, and evening review into a single, coherent 2.5-hour entry. 

This eliminates the daily ritual of manually piecing your day back together.

Matter Attribution

In many cases you end up corresponding with dozens of peripheral parties. 

Your CRM likely contains the names of your client and opposing counsel. But it rarely contains the names of the judge, the children in a family law dispute, or the specific property addresses involved in a settlement.

Billables.ai relies on the metadata available through its integrations to match your work to a matter. If the data isn't explicitly linked in your practice management system, it struggles to categorize the time.

Ajax actively learns case-specific context to automate matter attribution.

If Ajax spots an address like "456 Elm" in a settlement document, it learns to associate that property with the correct divorce case for future entries. 

When Ajax cannot confidently attribute work, it flags it for the lawyer to assign manually. 

It subsequently builds a case-specific dictionary of keywords from that manual correction to ensure it gets the attribution right the next time.

User Interface Workflow

Billables.ai uses a standard checklist for approvals. 

The app layout is essentially a vertical list where you check boxes next to individual activities and hit "approve." It is functional. But the entries stay in a static list even after you interact with them.

Ajax uses a dynamic, left-to-right flow designed to feel like clearing a to-do list. 

We utilize a two-column interface: 

• Entries waiting for your review sit on the left

• Entries already synced to your billing system sit on the right

By clicking and dragging entries from left to right, Ajax gives lawyers the satisfying feeling of actively clearing out their daily work queue.

Configurability and Setup

Because Billables.ai relies on integrations with your tools (e.g. Word, email, Zoom), there is a decent amount of upfront setup required from the person using the tools to connect their tech stack. 

And then you have to maintain these individual software integrations over time to make sure they don’t get disconnected.

Ajax allows you to write plain-English customization rules that flow directly into its pipeline as it constructs time entries in real time. 

Without needing any technical setup, a user can simply tell Ajax how they want their time handled. 

You can specify whether you want your morning, afternoon, and evening work grouped together as block billing, or kept as separate, itemized chunks. You can set default matters for administrative work or continuing legal education. 

Ajax adapts to your preferences, rather than forcing you to adapt to its structure.

Which tool is the right fit for your law firm?

Choosing between these two time tracking tools comes down to your firm's goals, budget, and tolerance for manual review.

Choose Ajax if:

• You want to capture the billable time that’s currently slipping through the cracks.

• You want to automate the busywork of reconstructing your daily activities.

• You want a tool that automatically writes narratives for you based on your work.

• You want your time tracking tool to intelligently group fragmented tasks into finished entries that are ready for billing.

• You are focused on high ROI through recovered revenue and saved administrative time.

Learn more about Ajax here.

Choose Billables.ai if:

• You have a tight software budget and need a cost-effective option.

• You prefer a cloud-native solution that integrates with your daily apps.

• You are strictly opposed to screen capture technology.

• You prefer reviewing your day through a traditional, linear chronological checklist.

• You don't mind spending time manually grouping related tasks to keep overhead low.

Learn more about Billables.ai here.

Final thoughts

Billables.ai uses integrations to pull your data and provides you with a chronological list of tasks at a lower cost. 

While Ajax uses a privacy-first screen recording method to capture tasks you would otherwise lose, groups them automatically by matter, automatically writes your billing narratives, and learns the details of your cases as you use it.

Ready to see how Ajax can help you capture 12% more billable hours and eliminate the busywork of time tracking? Book an Ajax demo today.