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Harmonic alternatives in 2026

New startups as rows, at 5¢ a company.

Harmonic prints no price: its console, API and bulk data plans each sit behind a Get pricing button. Prospeo estimates a minimum commitment of about $25,000 a year, about $10,000 a seat with a 3 seat minimum, for its database of 40 million companies.

SpecStream is the live web data engine for teams and agents. Describe the founders and companies you back in plain words, and get each one on the live web as a structured row, at 5¢ for 5 facts, under a maximum you approve.

New accounts get $10 of credit, no card.

SpecStream and Harmonic side by side

SpecStreamHarmonic
What you sendThe companies or founders you want in plain words, with the conditions every row must meetSearches and Scout, its AI assistant, over Harmonic's own database, in the console on mobile or in the browser
What you get backStructured rows, one record per company or founder, with facts from many sites joined. Source URL and read time on every valueCompany and people records from its database, with CSV export and network mapping
Companies coveredAny company on the live web that meets your conditions, found on its own site. Public databases read every morning at specstream.ai/data, with every company that filed a Form D since 2023 and its filing history. Signals such as funding rounds, new executives and layoffs at specstream.ai/signals40 million companies, 200 million people and 250 thousand investors, as its pricing page listed them on Nov 9, 2026
How fresh the data isRead from the live web when you ask, with the read time on every valueBulk data refreshed weekly, delivered through S3, BigQuery or Snowflake
The unit you pay forA delivered row: 5¢, 15¢ or $1 by how much the row needs, plus 5¢ for an email and 15¢ for a phone. The same rate on every plan, and no seatsA plan by quote: console, API access and bulk data each say Get pricing. Prospeo estimates a minimum commitment of about $25,000 a year, about $10,000 a seat with a 3 seat minimum (2026)
The cost cap and refundsThe most the run can cost, quoted before it starts. Nothing runs until you approve it, and there are no automatic overages. What a run does not use goes back to your balanceIts terms say Harmonic may change its fees at any time, and refunds are issued only at its sole discretion or when the law requires
What you can do with the dataEvery delivered row goes to your CRM, sheet or agent. Exporting and sharing cost nothing, and rows you already own are never charged againInternal business purposes only, never shared with a competitor of Harmonic. Harmonic keeps all rights in its data, including in your work product
A list you already haveImport a CSV, Excel file, Google Sheet or Airtable base of up to 20,000 rows. SpecStream fills in or checks each row and matches it to one identity, with any namesakes shown alongside their evidence. Import is free. A row that matches pays its rate, and a row that does not costs 5¢Record enrichment through the API access plan, priced by quote
Reruns and change labelsHourly to yearly. Each row comes back labeled changed, unchanged or no longer matching. A changed or new row costs half its rate, an unchanged row 1¢Automatic triggers on the API access plan
MCP and APIMCP server, REST API, Python and TypeScript SDKs, a CLI and A2A. An agent can buy one request with no account, by card or in USDCTrial MCP credits on the console plan. Full MCP access, the API and Scout through the API on the API access plan, by quote
Where the data goesAffinity, HubSpot, Salesforce, Pipedrive, Attio, Google Sheets, Excel, Airtable, Notion, Slack, Teams, Zapier, Make, n8n and signed webhooksCSV export, the API, a no-code CRM sync as an add-on, and bulk delivery to S3, BigQuery or Snowflake

Why Harmonic buyers move to SpecStream

Other Harmonic alternatives

How SpecStream scores

The same numbers as the benchmarks page, from the official tasks and scorers.

How to switch from Harmonic

Write the companies or founders you want in plain words, or import the companies you exported from Harmonic, up to 20,000 rows, and SpecStream fills in or checks each row. Sign up and you get $10 of credit, no card. At 5¢ a row, that is up to 200 companies.

Or send the request from code. This call spends nothing: the 402 reply shows how SpecStream read the request, the columns and the most it can cost.

curl -i https://api.specstream.ai/v1/agent/lists \
  -H "Content-Type: application/json" \
  -d '{"request": "US startups founded in the last 12 months by people who left OpenAI, Anthropic or Google DeepMind, with the founders, what they are building, any round raised and a work email", "count": 25}'

Approve that maximum by card through Stripe's Link agent wallet, or in USDC on Base, Arbitrum or Polygon, and you pay for the rows found. On an account, your agent uses the MCP server at https://api.specstream.ai/mcp and your team uses the workspace, from the same balance.

Frequently asked questions

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How much does Harmonic cost?
Harmonic publishes no price: each plan says Get pricing. Prospeo estimates a minimum commitment of about $25,000 a year, about $10,000 a seat a year with a 3 seat minimum (2026). On SpecStream 1,000 companies with 5 facts cost $50, with no seats.
What is the best Harmonic alternative?
SpecStream, at 5¢ to $1 a delivered row. You describe the founders and companies you back in plain words, approve the most the run can cost, and get each one from the live web as a structured row in Affinity, your CRM or your sheet. A founder's email adds 5¢.
How many companies does Harmonic track?
40 million companies, 200 million people and 250 thousand investors, as its pricing page listed them on Nov 9, 2026. SpecStream reads the live web when you ask, so a company that launched this week is found on its own site.
Does Harmonic have an API?
Yes, on its API access plan, sold by quote, with full MCP access and Scout through the API. SpecStream's API and MCP server are open to every account at 5¢, 15¢ or $1 a delivered row, spent from the same balance as your team.
Can I share Harmonic data outside my firm?
Not without Harmonic's prior written approval: its terms limit Company Data to internal business purposes and bar sharing it with a competitor of Harmonic. On SpecStream exporting and sharing a delivered row cost nothing.
Can SpecStream find startups that raised this week?
Yes. 494 operating companies filed a Form D in the week of November 2, 2026, and SpecStream reads each filing the day it is filed. Ask for the cut you want, such as one industry or first raises above an amount, at 5¢ a row.
Does SpecStream have an API?
Yes. The Search API costs $5 per 1,000 searches and scores 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. Deep Search costs 5¢, 15¢ or $1 a delivered row through the REST API, the Python and TypeScript SDKs, a CLI and the MCP server at https://api.specstream.ai/mcp. The scores are on benchmarks.

Sources

SpecStream wrote this page. Harmonic's plans, counts and terms come from its own pages. Harmonic publishes no price, so its figure is Prospeo's estimate, and the PitchBook figure is Multiples', named where they appear.

  1. SpecStream pricingspecstream.ai/pricing, read Nov 9, 2026
  2. SpecStream for agentsspecstream.ai/agents.md, read Nov 9, 2026
  3. SpecStream benchmarksspecstream.ai/benchmarks, read Nov 9, 2026
  4. SpecStream Form D dataspecstream.ai/data/form-d, read Nov 9, 2026
  5. Harmonic pricingharmonic.ai/pricing, read Nov 9, 2026
  6. Harmonic terms of serviceharmonic.ai/terms-of-service, read Nov 9, 2026
  7. Prospeo, Harmonic pricing (2026)prospeo.io/s/harmonic-pricing-reviews-pros-and-cons, read Nov 9, 2026
  8. Dealroom pricingdealroom.co/pricing, read Nov 9, 2026
  9. Multiples, PitchBook alternatives (facts verified Aug 14, 2026)multiples.vc/compare/pitchbook-alternatives/md, read Nov 9, 2026
  10. DiscoLike pricingdiscolike.com/pricing, read Nov 9, 2026
  11. Tracxn pricingtracxn.com/pricing, read Nov 9, 2026