Sales intelligence tools for B2B contact data, ordered by fit

ZoomInfo and Apollo fit the sales intelligence category most fully, with large databases by their own claims, phone numbers, intent data and built-in workflows. Lusha and Wiza suit reps who want contact reveals, including phones, on smaller budgets. Leadsets fits a narrower buyer: teams that want an AI agent to search, enrich and verify work emails over MCP or API for a flat monthly price, without phone numbers.

Facts about other products checked on 2026-11-09 · sources listed below

Tool	Best for	Starting price	Pricing model	Phone numbers	API / MCP
ZoomInfo	Enterprise teams needing intent, phones and wide integrations	Platform: not published. GTM.ai Free: 1,000 data credits at signup	Custom annual contracts; GTM.ai credits	Yes, direct dials; mobile on GTM.ai Enterprise	Data API; MCP needs a ZoomInfo licence
Apollo	SMB teams wanting data plus sequencing and a dialer	Free; Basic $59/seat/mo billed monthly	Per-seat credits, expire each cycle	Yes, 5 credits each	REST API; MCP on all plans incl. Free
Lusha	Reps revealing contacts from a browser extension	Free 40 credits/mo; Starter $49.90/mo billed monthly	Credits; monthly rollover up to 2x	Yes, 5 credits each	API on every plan; MCP server
Wiza	LinkedIn-based email and mobile lookup	Free 20 emails + 5 phones once; Starter $49/user/mo	Per user; charged for valid emails	Yes	API on Team or via credits; MCP server
Leadsets	AI agents, GTM engineers and agencies	Free 1,000 records once; Solo $29/mo	Flat monthly, fair-use limits, no credits	Not yet	REST API and remote MCP on all plans

How we compared

Sales intelligence tools give sellers contact and company data plus signals about who to reach and when (see what is sales intelligence). We looked at five vendors that sell their own B2B contact data and read each one's public pages on 2026-11-09. The criteria:

Data and coverage: what each vendor says it has, including phone numbers. Database sizes are vendor claims; we have not tested them.
Signals: intent, buying or hiring signals beyond a contact record.
Pricing clarity: whether prices are published, and how credits, seats and expiry work.
Access: web app and extension for reps, plus API and MCP for code and AI agents.
Compliance: certifications published today.

We ordered the list by how fully each tool covers the classic sales intelligence job: a rep or team finding accounts, contacts (including phones) and signals in one place. That is why Leadsets comes last. It has no phone numbers and no rep dashboard, so it serves a narrower buyer. Clay is covered separately because it aggregates other providers' data rather than selling its own.

The tools, in order of category fit

1. ZoomInfo

ZoomInfo says it has 410M+ contact profiles, 300M+ verified business emails and 135M+ direct dial numbers, with over 95% accuracy. It sells intent data (a separate SKU), signals and sales, marketing and recruiting software, lists 194 integrations and delivers to Snowflake, Databricks, BigQuery and S3. Platform pricing is not published; Vendr (third-party, 1,581 purchases) reports a median of $33,500 per year. The self-serve GTM.ai by ZoomInfo has a free tier with 1,000 data credits and 1,000 AI credits at signup, expiring after 12 months, and pay-as-you-go data credits at $0.38 each at the $1,000 spend tier. Mobile data is only on GTM.ai Enterprise, and its MCP server requires a ZoomInfo licence. ZoomInfo lists ISO 27001, 27017 and 27701 and an AICPA SOC report.

2. Apollo

Apollo combines a database with sequencing, a dialer and deal tools. It says it has 240M+ contacts, 30M+ companies and 98% email accuracy, with intent data powered by Bombora. Pricing is per seat: Free with 100 credits per seat per month, Basic $59 per seat per month billed monthly ($49 annually), Professional $99 ($79 annually), and Organization $119 per seat per month billed annually with a 3-seat minimum. An email costs 1 credit and a phone number 5; unused credits expire each cycle. Apollo's official MCP server is available on every plan including Free, and Apollo says it is SOC 2 Type II and ISO 27001 certified. G2 (third-party) shows 4.7/5 from 9,859 reviews, with themes including outdated records and a learning curve. More detail: Apollo pricing.

3. Lusha

Lusha says it has 515M+ verified contacts, 29M+ company profiles and 30+ buying signals, and claims 98% email and 86% phone accuracy; third-party reviews estimate email accuracy lower, around 75 to 81%. Pricing: Free up to 40 credits a month; Starter $49.90 a month billed monthly ($37.45 annually); Pro $69.90 ($52.45); Premium $399.90 ($299.95); Scale is custom. A phone reveal costs 5 credits, and 1 credit is charged per request even when no data returns. There is an API key on every plan and an MCP server sharing the same credits. Lusha claims SOC 2 Type II and several ISO certifications.

4. Wiza

Wiza finds and verifies work emails, personal emails and mobile numbers, with a Chrome extension for LinkedIn profiles and company sites. It says it has 850M+ contacts and verifies at request time; risky emails are not charged. Per-user pricing: Free 20 valid emails and 5 phone numbers once; Starter $49 per user per month (monthly only); Email $99 per user monthly ($83 annually); Email + Phone $199 ($166 annually); Team custom. API credits cost $0.025 each with a $50 minimum, and it runs a remote MCP server. Bulk export from LinkedIn search pages was removed in August 2026. Its trust center lists SOC 2 Type 2 documentation on request.

5. Leadsets

Leadsets is a B2B data API and remote MCP server for AI agents rather than a rep dashboard. Eight tools cover people and company search, enrichment, email verification (labelled verified, catch-all, unknown or invalid) and scraping of company sites and careers pages for hiring signals. Pricing is flat: Free gives 1,000 records once with no card; Solo $29, Pro $99, Team $399 and Max $999 a month, with no credits and visible fair-use limits per five hours and per week (pricing). Gaps today: no phone numbers, no intent data feed, no published database size, and SOC 2 Type I is planned for Q3 2027, not done.

Which tool suits which buyer

Enterprise teams needing intent data, phones, warehouse delivery and a formal procurement process: ZoomInfo.
SMB sales teams wanting data, sequencing and a dialer in one seat, starting free: Apollo.
Individual reps revealing contacts from a browser extension, phones included, on a modest budget: Lusha.
LinkedIn-centric prospecting with request-time verification and billing only for valid emails: Wiza.
GTM engineers, agencies and founders running prospecting through Claude, Cursor or code who want a flat monthly cost: Leadsets. If an MCP server is new to you, start there.
Anyone who needs SOC 2 today should pick one of the first four.

Example: one team, two jobs

Maya Chen runs RevOps at Northwind Analytics (northwind.co). Her SDRs call mid-market distributors, so they need direct dials and a dialer inside the tool they live in. Apollo or ZoomInfo covers that; Leadsets does not.

Maya also wants an agent to check every Monday which target accounts posted SDR roles, then find their revenue leaders with verified emails. That is an agent job: scrape_jobs, then search_people, then verify_email through mcp.leadsets.ai, on a flat plan with no per-credit bill. Plenty of teams end up with a rep-facing sales intelligence tool plus an API source for automated work.

Where Clay fits

Clay is a workflow layer that pulls from many providers, including Apollo, ZoomInfo, Lusha and Wiza, into waterfall tables. Clay says it aggregates 50+ built-in providers on one page and 150+ on others. Pricing: Free at $0, Launch $185 a month billed monthly ($167 annually), Growth $495 ($446 annually), Enterprise custom. Because it orchestrates other vendors' data rather than selling its own, we did not rank it. Leadsets can be called from a Clay HTTP API column; see Leadsets vs Clay.

Questions and answers

What is a sales intelligence tool?

A sales intelligence tool gives sales teams B2B contact and company data plus signals, such as intent or hiring, that suggest who to contact and when. Examples include ZoomInfo, Apollo, Lusha and Wiza; Leadsets offers the data side through an API and MCP server for AI agents.

Which sales intelligence tools include phone numbers?

ZoomInfo, Apollo, Lusha and Wiza all offer phone numbers. Apollo and Lusha charge 5 credits per phone, and ZoomInfo offers mobile data on GTM.ai Enterprise. Leadsets does not offer phone numbers yet.

Is there a free sales intelligence tool?

Several have free tiers. Apollo gives 100 credits per seat per month, Lusha up to 40 credits a month, Wiza 20 valid emails and 5 phones once, GTM.ai by ZoomInfo 1,000 data credits at signup, and Leadsets 1,000 records once with no card.

Which sales intelligence tools work with AI agents over MCP?

Apollo, ZoomInfo, Lusha, Wiza and Leadsets all publish MCP servers. Apollo's is available on every plan including Free, ZoomInfo's requires a ZoomInfo licence, and Leadsets is built around its remote MCP server at mcp.leadsets.ai with eight tools.

How much does ZoomInfo cost?

ZoomInfo does not publish platform pricing. Vendr, a third party, reports a median of $33,500 per year across 1,581 purchases. Its self-serve GTM.ai option has a free tier and pay-as-you-go data credits at $0.38 each at the $1,000 spend tier.

Which sales intelligence tools have SOC 2?

Apollo and Lusha say they hold SOC 2 Type II, Wiza lists SOC 2 Type 2 documentation on request, and ZoomInfo lists an AICPA SOC report alongside ISO certifications. Leadsets has SOC 2 Type I planned with a target of Q3 2027.

Sources · checked 2026-11-09

Prices and features change. If something here is out of date, email support@leadsets.ai and we'll fix it.

Go deeper

More best tools