The Companies API vs Unify: Data Enrichment Tool vs Sales Engagement Platform Comparison

The Companies API vs Unify: Data Enrichment Tool vs Sales Engagement Platform Comparison

Sales teams building an outbound stack often weigh The Companies API, a data enrichment tool for B2B lead data and contact enrichment, against Unify, a sales engagement platform for multi-channel sales outreach and engagement tracking. They cover different parts of the workflow, so this comparison covers what each one does, what each one costs, and where they overlap.

The Quick Answer

The Companies API is a data enrichment tool for B2B lead data and contact enrichment; Unify is a sales engagement platform for multi-channel sales outreach and engagement tracking. By each vendor's own wording, The Companies API lists domain to company profile enrichment and access to all 50m companies, and Unify lists multi-channel sequences across email, social messaging and dialer and ai copywriting and personalization.

Both start at the same price point ($0/mo), so the decision comes down to features and workflow fit.

If your priority is finding accurate contact data for target accounts, The Companies API is the one built for it; for coordinating outreach across email, phone, and social channels, that is Unify. Many teams run one of each.

Understanding the Core Difference

The Companies API is The Companies API is a company enrichment API that turns a domain name into a structured company profile with firmographics such as industry, employee count, founding year and revenue across 50 million companies. Plans are monthly credit allowances with a request-rate limit.

Unify is AI prospecting platform that pairs a B2B data and intent-signal layer with multi-channel sequencing across email, social messaging and a dialer, plus signal-triggered automations and managed mailboxes.

The two platforms take different approaches to solving the same core challenge.

Pricing Comparison

The Companies API Pricing (as of September 2026)

Source: The Companies API Pricing

Unify Pricing (as of September 2026)

Source: Unify Pricing

Pricing Analysis

Both platforms start at the same $0/mo price point. The decision comes down to which feature set and tier structure works better for your expected usage.

Both platforms offer free tiers, so you can test each one before spending anything.

Features Breakdown

The Companies API lists

• Domain to company profile enrichment
• Access to all 50M companies
• Firmographics: industry, employee count, founding year, revenue
• Company lists
• Additional credits at a per-1,000 rate
• Rate-limited API by plan

Unify lists

• Multi-channel sequences across email, social messaging and dialer
• AI copywriting and personalization
• Signal-triggered automations
• Website intent and product usage signals
• Job change and hiring signals
• Phone and email enrichment
• and 4 more listed below

The Companies API Key Features

• Domain to company profile enrichment
• Access to all 50M companies
• Firmographics: industry, employee count, founding year, revenue
• Company lists
• Additional credits at a per-1,000 rate
• Rate-limited API by plan

Unify Key Features

• Multi-channel sequences across email, social messaging and dialer
• AI copywriting and personalization
• Signal-triggered automations
• Website intent and product usage signals
• Job change and hiring signals
• Phone and email enrichment
• Agentic chat for prospecting and list building
• Managed Gmail and Outlook mailboxes with warmup and rotation
• Dialer in beta
• Sequence, rep activity and signal analytics

The two lists below are a diff of each vendor's own feature list by exact wording, so a capability both tools offer can appear on either side under a different name.

Listed only by The Companies API

• Domain to company profile enrichment
• Access to all 50M companies
• Firmographics: industry, employee count, founding year, revenue
• Company lists
• Additional credits at a per-1,000 rate
• Rate-limited API by plan

Listed only by Unify

• Multi-channel sequences across email, social messaging and dialer
• AI copywriting and personalization
• Signal-triggered automations
• Website intent and product usage signals
• Job change and hiring signals
• Phone and email enrichment
• Agentic chat for prospecting and list building
• Managed Gmail and Outlook mailboxes with warmup and rotation
• Dialer in beta
• Sequence, rep activity and signal analytics

Integration Ecosystem

The Companies API Integrations

The Companies API connects with: .

Unify Integrations

Unify connects with: HubSpot, Salesforce, Slack, Gmail, Microsoft Outlook.

Integrations listed only by Unify: HubSpot, Salesforce, Slack, Gmail, Microsoft Outlook.

Use Case Recommendations

Best Fit for The Companies API

• Budget-conscious teams looking for an affordable data enrichment tool
• Teams that want to start free and scale up as needs grow
• Revenue operations teams building targeted prospect lists
• Marketing teams enriching CRM data for segmentation

Best Fit for Unify

• Budget-conscious teams looking for an affordable sales engagement platform
• Teams that need a wide feature set (10 capabilities listed)
• Organizations with complex tech stacks needing broad integration support (5 integrations)
• Teams that want to start free and scale up as needs grow
• Enterprise buyers who prefer custom pricing and dedicated support

Feature Comparison Summary

Getting Started Checklist

1. Define your B2B lead data and contact enrichment and multi-channel sales outreach and engagement tracking requirements and monthly budget
2. Estimate your expected data credits or contact lookups and sequences and engagement actions to find the right tier
3. List the integrations your team currently relies on
4. Sign up for free trials or demos of both platforms
5. Run a small test with each tool before making a commitment
6. Evaluate the onboarding experience and support quality

Final Thoughts

The Companies API serves the B2B lead data and contact enrichment side of an outbound stack and Unify the multi-channel sales outreach and engagement tracking side. The Companies API offers a more accessible entry point, while Unify starts at $0/mo. Your decision should weigh pricing against the specific features that matter most for your workflow.

Start with a trial of each to see which platform fits your team's daily process. The best tool is the one your team actually uses consistently.

Pricing and features verified as of September 2026. Visit The Companies API and Unify for current information.