Attio vs The Companies API: CRM Platform vs Data Enrichment Tool Comparison

Attio vs The Companies API: CRM Platform vs Data Enrichment Tool Comparison

Attio (CRM 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

Attio is a CRM platform for customer relationship management and sales pipeline tracking; The Companies API is a data enrichment tool for B2B lead data and contact enrichment. By each vendor's own wording, Attio lists real-time contact syncing and automatic data enrichment, and The Companies API lists domain to company profile enrichment and access to all 50m companies.

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

If your priority is organizing contacts, tracking deals, and forecasting revenue, Attio 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

Attio is Attio is a CRM that syncs contacts and email in real time and lets teams model their own objects, workflows and reports on top of that data. It is sold in Free, Plus, Pro and Enterprise plans priced per user.

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

Attio Pricing (as of September 2026)

Source: Attio Pricing

The Companies API Pricing (as of September 2026)

Source: The Companies API 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

Attio lists

• Real-time contact syncing
• Automatic data enrichment
• Custom objects and custom relationship attributes
• Workflows and integration blocks
• Sequences for personalized outreach
• Call Intelligence to record and analyze meetings
• and 2 more listed below

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

Attio Key Features

• Real-time contact syncing
• Automatic data enrichment
• Custom objects and custom relationship attributes
• Workflows and integration blocks
• Sequences for personalized outreach
• Call Intelligence to record and analyze meetings
• Reporting and insights in real time
• API and webhook access with an app SDK and MCP server

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 Attio

• Real-time contact syncing
• Automatic data enrichment
• Custom objects and custom relationship attributes
• Workflows and integration blocks
• Sequences for personalized outreach
• Call Intelligence to record and analyze meetings
• Reporting and insights in real time
• API and webhook access with an app SDK and MCP server

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

Attio Integrations

Attio connects with: Typeform, Zapier, Slack, Aircall, Mailchimp, Segment, Asana, Pipedream, ChatGPT, Claude.

The Companies API Integrations

The Companies API connects with: .

Integrations listed only by Attio: Typeform, Zapier, Slack, Aircall, Mailchimp, Segment, Asana, Pipedream, ChatGPT, Claude.

Use Case Recommendations

Best Fit for Attio

• Budget-conscious teams looking for an affordable CRM platform
• Teams that need a wide feature set (8 capabilities listed)
• Organizations with complex tech stacks needing broad integration support (10 integrations)
• Teams that want to start free and scale up as needs grow
• 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

Getting Started Checklist

1. Define your customer relationship management and sales pipeline tracking and B2B lead data and contact enrichment requirements and monthly budget
2. Estimate your expected contacts and deals and data credits or contact lookups 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

Attio serves the customer relationship management and sales pipeline tracking side of an outbound stack and The Companies API the B2B lead data and contact enrichment side. Attio offers a more accessible entry point, while The Companies API 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 Attio and The Companies API for current information.