The Seamless.AI alternative for code and agents

Seamless.AI is a sales platform with a Chrome extension, a dialer and a credit meter. LeadOcean is a data layer you call over REST or MCP at one flat price. If your team pulls contacts in code or through an agent, LeadOcean is the simpler and more predictable source. If reps live in the Seamless.AI UI, keep it and use LeadOcean for volume.

Why teams switch from Seamless.AI

Every record spends a credit

Seamless.AI bills in Universal Credits. Contact research costs 1 credit per contact, company research 1 per company, and search 1 per 10 results returned (Seamless.AI API overview, September 2026). Volume means a bigger credit order.

The price is not published

Seamless.AI says it does not publish standalone API pricing. Keys are bundled with plan tiers or sold as an add-on, and you ask sales for a quote (Seamless.AI API page, September 2026).

The API is throttled by default

The standard rate limit is 60 requests per minute (Seamless.AI API overview, September 2026). Contact research is also asynchronous: you start a job, then poll or wait on a webhook (Seamless.AI docs, September 2026).

Plans are built around seats

Licenses come as Free, Basic and Pro, each with a credit allowance (Seamless.AI credit docs, September 2026). That suits a rep team. It fits badly when one script or one agent does the pulling.

LeadOcean vs Seamless.AI

Seamless.AI figures come from the pages linked in each cell, checked in September 2026. Seamless.AI changes plans often, so check before you buy.

What 1M, 5M and 25M records cost

Seamless.AI does not publish a dollar price for credits or for the API, so this table counts credits and licenses instead of dollars. LeadOcean Pro stays at $499 a month at every volume.

Arithmetic: contact research costs 1 credit per contact, and a Pro license carries 10,000 credits a month (Seamless.AI API overview, September 2026; Seamless.AI credit docs, September 2026). So 1M records is 1M credits, or 100 licenses. Seamless.AI also sells a bulk credit pool, so ask sales what it costs.

Seamless.AI publishes no price per credit. Bulk credit pools are quoted by sales (Seamless.AI bulk credits, September 2026).

The dollar cost is yours to get from sales. Multiply their per-credit quote by the credit column. We will not guess it here.

Where LeadOcean wins

A flat bill at any volume

Pro is $499 a month. Every person or company returned counts as a record, but there is no credit balance to watch and no overage invoice. A very large month is paced down to one request a minute until the reset, not cut off. One email to support gets you more headroom.

One synchronous call

POST /v1/people/enrich returns a profile and email status in the same response. You do not start a research job and poll for it. The limit is 100 requests per second per key on every plan, including Free.

curl -X POST "https://api.leadocean.io/v1/people/enrich" \
  -H "x-api-key: $LEADOCEAN_API_KEY" \
  -H "content-type: application/json" \
  -d '{"linkedin_url":"https://www.linkedin.com/in/jane-doe","reveal_email":true}'

Counting is free, so agents can size first

Both tools have an MCP server. LeadOcean's count_leads tool is free, so an agent can size an audience before it spends a record. On 30 September 2026 a count of VPs in Sales & Business Development in Canada returned 5,066 mailable contacts. Add https://api.leadocean.io/mcp to Claude or Cursor and sign in with OAuth. No key gets pasted into a chat.

Search and export at database scale

Search people with 50 filters and companies with 34, across 254 countries and 534 industries. Export up to 50,000 rows per request with POST /v1/exports, so a 1M-row pull is 20 calls over two days. Email status comes back on every record, with 13 values from verified to spam_trap.

Where Seamless.AI wins

A bigger dataset and more mobile numbers

Seamless.AI claims 2.2B+ verified contacts and 448M+ verified mobile numbers (Seamless.AI API page, September 2026). LeadOcean holds 693M people and 166M with a phone number. If you need mobile numbers at scale, Seamless.AI has more of them.

A full sales app

Seamless.AI ships a Chrome extension, a dialer, emailing, buyer intent and job change tracking (Seamless.AI, September 2026). A rep can find a person on LinkedIn and call them from one screen. LeadOcean has an export app, not a rep workspace.

Credit back on invalid emails

Seamless.AI says invalid emails are refunded automatically (Seamless.AI, September 2026). That softens the cost of a bad address on a meter. LeadOcean has no meter, so the question only matters if you keep paying per credit.

Use both: LeadOcean for volume, Seamless.AI for reps

You do not have to drop Seamless.AI. Let LeadOcean do the bulk pulls, and keep Seamless.AI licenses for the reps who use the extension and the dialer. Your credit spend then covers mobile numbers for people you will actually call.

1. Create a free LeadOcean key at app.leadocean.io/register. The free plan needs no card.
2. Pull your audience with POST /v1/people/search and the free count_leads tool. Keep every row whose email_status is verified.
3. Send only the people you will phone to Seamless.AI for mobile numbers. Use the extension, or POST /contacts/research at 1 credit each (Seamless.AI docs, September 2026).

FAQ