OpenCorporates alternatives in 2026

The register entry and everything around it

An OpenCorporates call returns what the register holds: the company number, status, type, address, and the officers and filings the registry publishes. A due diligence or onboarding file needs more than that. On SpecStream, a deep row at $1 holds the register entry, the company's site, its people and its press in one record, and shows where and when each fact was read. Facts from many sites join into one record, and records of two kinds never merge.

Registers we hold, with a count you can open

UK companies: Companies House lists 5,596,581 live companies in its snapshot dated 1 November 2026. France companies: 6,856,512 active companies on the Sirene register. The LEI register: 3,490,409 legal entities in 235 countries. Public companies: the latest annual report of 6,761 SEC filers. New business registrations: 2,400,057 records from 9 city, county and state portals.

Each family is cut into ready lists by industry and place, sold as CSV by card with no account, at 5¢ a row for the first 2,000 rows and 1¢ a row after. The 225,046 live UK companies with SIC code 82990 cost $2,330.46. The full catalog is at specstream.ai/data/lists.

Pay for rows, not a yearly plan

OpenCorporates Essentials asks £2,250 up front for 6,000 calls over a year, and a call over the day's cap of 200 waits for midnight UTC. SpecStream has no yearly commitment and no daily cap on a run: you approve the most a job can cost, and a row left out, a retry or a run that finds nothing is not charged. Rates are on pricing.

Your agent spends under a maximum you approved

Every request gets a quote of the most it can cost, good for 30 minutes. Nothing runs until you approve it, the charge never goes past that amount, and whatever the run does not use goes back to your balance. An API key carries its own limits: total, per run, monthly, and the operations it allows. Agents connect to https://api.specstream.ai/mcp with OAuth or an API key, and people and agents spend from one balance.

The rows stay up to date

Save the request and it reruns hourly to yearly. Each row comes back labeled changed, unchanged or no longer matching. A changed or new row costs half its rate (3¢, 8¢ or 50¢) and an unchanged row costs 1¢, so rechecking 1,000 rows that did not change costs $10. Changes arrive by signed webhook or through the API, and in Sheets, HubSpot, Salesforce or Slack with no code.

The most accurate web search API, in the same account

The Search API answers one question from the live web from $1 per 1,000 searches of up to 10 results. It scores a 97.9 F-score on all 1,000 official SimpleQA Verified questions (978 correct), and 64.0 item F1 and 43.4 row F1 on all 200 official WideSearch tasks. The Extract API reads pages for $0.80 per 1,000 and scores 0.908 F1 on WCXB. Scores and method are on benchmarks.

SpecStream

The live web data engine for teams and agents. One request in plain words, through the API or MCP, returns every company that meets your conditions as a typed row, at 5¢, 15¢ or $1 a delivered row, with the registers we hold on specstream.ai/data as ready lists from 1¢ a row. New accounts get $10 of credit, no card.

Companies House API

The UK register's own API is free, with up to 600 requests in a 5 minute period, and it covers UK companies only. SpecStream reads the Companies House data every month into UK companies, and joins each company to its site, people and press in one row.

Coresignal

Company, employee and job records sold by the credit. Mini is $49 a month for 2,500 credits, and a full company record takes 20. Datasets start from $1,000. SpecStream bills a delivered row at 5¢, 15¢ or $1, and a run that finds nothing costs nothing. Compare SpecStream and Coresignal.

People Data Labs

Company records from a database, with company plans from $100 a month for 1,000 records. SpecStream reads the live web for each request, so a company the database never collected still comes back as a row. Compare SpecStream and People Data Labs.