Amplemarket vs The Companies API: Sales Engagement Platform vs Data Enrichment Tool Comparison
Compare Amplemarket (sales engagement platform) and The Companies API (data enrichment tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Compare Amplemarket (sales engagement platform) and The Companies API (data enrichment tool) side by side. See pricing, features, and integrations to decide which one, or both, your stack needs.
Reviewed and updated September 4, 2026
Amplemarket vs The Companies API: Sales Engagement Platform vs Data Enrichment Tool Comparison
Amplemarket (sales engagement platform) and The Companies API (data enrichment tool) sit next to each other in many outbound stacks. They are not substitutes for each other on every job, so this comparison covers pricing, features, and integrations for each and points out where the two meet.
The Quick Answer
Amplemarket is a sales engagement platform for multi-channel sales outreach and engagement tracking; The Companies API is a data enrichment tool for B2B lead data and contact enrichment. By each vendor's own wording, Amplemarket lists multichannel sequences and duo copilot ai sales agent, and The Companies API lists domain to company profile enrichment and access to all 50m companies.
The Companies API offers a lower entry point at $0/mo compared to Amplemarket at $600/mo.
If your priority is coordinating outreach across email, phone, and social channels, Amplemarket is the one built for it; for finding accurate contact data for target accounts, that is The Companies API. Many teams run one of each.
Understanding the Core Difference
Amplemarket is AI sales copilot and multichannel engagement platform that combines a B2B contact and company database, intent signals, sequences across email, phone and social, and mailbox deliverability tooling for outbound sales teams.
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.
The two platforms take different approaches to solving the same core challenge.
Pricing Comparison
Startup
Free
Amplemarket Pricing (as of September 2026)
| Plan | Price | Contacts |
|---|---|---|
| Startup | $600/mo | 27,000 contacts |
| Growth | Contact Sales | 140,000 contacts |
| Elite | Contact Sales | 400,000 contacts |
Source: Amplemarket Pricing
The Companies API Pricing (as of September 2026)
| Plan | Price | Emails |
|---|---|---|
| Free | Free | 500 credits |
| Startup | $95/mo | 50000 credits per month |
| Scaleup | $295/mo | 250000 credits per month |
| Enterprise | $595/mo | 500000 credits per month |
Source: The Companies API Pricing
Pricing Analysis
The Companies API offers the lower entry point ($0/mo vs $600/mo). Teams watching their budget will appreciate the savings, especially when starting out.
The Companies API offers 4 pricing tiers compared to Amplemarket's 3, giving you more granularity as you scale.
The Companies API includes a free tier, which is helpful for evaluating the platform without upfront cost.
Features Breakdown
- Multichannel Sequences
- Duo Copilot AI sales agent
- Duo Copywriter for personalized first-touch emails
- Duo Voice for AI voice messages at scale
- Duo Inbox with automatic draft replies
- Contact and company search over a B2B database
- and 4 more listed below
- 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
Amplemarket Key Features
- Multichannel Sequences
- Duo Copilot AI sales agent
- Duo Copywriter for personalized first-touch emails
- Duo Voice for AI voice messages at scale
- Duo Inbox with automatic draft replies
- Contact and company search over a B2B database
- AI Intent Signals
- Job change alerts on tracked contacts
- Outbound Dialer for verified phone numbers
- Domain Health Center with deliverability booster and spam checker
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
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 Amplemarket
- Multichannel Sequences
- Duo Copilot AI sales agent
- Duo Copywriter for personalized first-touch emails
- Duo Voice for AI voice messages at scale
- Duo Inbox with automatic draft replies
- Contact and company search over a B2B database
- AI Intent Signals
- Job change alerts on tracked contacts
- Outbound Dialer for verified phone numbers
- Domain Health Center with deliverability booster and spam checker
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
Integration Ecosystem
Amplemarket Integrations
Amplemarket connects with: Salesforce, HubSpot, Pipedrive, Gmail, Microsoft 365, Zapier, Clay, Okta, CloudTalk, Orum, Nooks, SendSpark.
The Companies API Integrations
The Companies API connects with: .
Integrations listed only by Amplemarket: Salesforce, HubSpot, Pipedrive, Gmail, Microsoft 365, Zapier, Clay, Okta, CloudTalk, Orum, Nooks, SendSpark.
Use Case Recommendations
Best Fit for Amplemarket
- Mid-market to enterprise teams with established multi-channel sales outreach and engagement tracking budgets
- Teams that need a wide feature set (10 capabilities listed)
- Organizations with complex tech stacks needing broad integration support (12 integrations)
- Enterprise buyers who prefer custom pricing and dedicated support
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
Feature Comparison Summary
| Feature | Amplemarket | The Companies API |
|---|---|---|
| Starting Price | $600/mo | Free |
| Top Tier Price | Contact Sales | $595/mo |
| Total Features Listed | 10 | 6 |
| Integrations | 12 | 0 |
Getting Started Checklist
- Define your multi-channel sales outreach and engagement tracking and B2B lead data and contact enrichment requirements and monthly budget
- Estimate your expected sequences and engagement actions and data credits or contact lookups to find the right tier
- List the integrations your team currently relies on
- Sign up for free trials or demos of both platforms
- Run a small test with each tool before making a commitment
- Evaluate the onboarding experience and support quality
Final Thoughts
Amplemarket serves the multi-channel sales outreach and engagement tracking side of an outbound stack and The Companies API the B2B lead data and contact enrichment side. The Companies API offers a more accessible entry point, while Amplemarket starts at $600/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 Amplemarket and The Companies API for current information.
About the author.
Tim Carden is CMO / CTO at RevenueFlow, which builds and operates outbound revenue engines for B2B companies. Studied at McGill University.
Tim Carden · CMO / CTO
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