> SpecStream is the live web data engine for teams and agents. This is the Markdown copy of https://specstream.ai/alternatives/harmonic. Every page, with what SpecStream does and costs: https://specstream.ai/llms.txt # Best Harmonic alternatives in 2026 | SpecStream Compared on Nov 9, 2026. # 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. [Describe your data](https://specstream.ai/signup?src=alternatives-harmonic&utm_source=alternatives&utm_campaign=harmonic&returnTo=%2Fworkspace%2Fask%3Fq%3DUS%2520startups%2520founded%2520in%2520the%2520last%252012%2520months%2520by%2520people%2520who%2520left%2520OpenAI%252C%2520Anthropic%2520or%2520Google%2520DeepMind%252C%2520with%2520the%2520founders%252C%2520what%2520they%2520are%2520building%252C%2520any%2520round%2520raised%2520and%2520a%2520work%2520email) New accounts get $10 of credit, no card. ## SpecStream and Harmonic side by side | | SpecStream | Harmonic | | --- | --- | --- | | What you send | The companies or founders you want in plain words, with the conditions every row must meet | Searches and Scout, its AI assistant, over Harmonic's own database, in the console on mobile or in the browser | | What you get back | Structured rows, one record per company or founder, with facts from many sites joined. Source URL and read time on every value | Company and people records from its database, with CSV export and network mapping | | Companies covered | Any company on the live web that meets your conditions, found on its own site. Public databases read every morning at [specstream.ai/data](https://specstream.ai/data?utm_source=alternatives&utm_campaign=harmonic), 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/signals](https://specstream.ai/signals?utm_source=alternatives&utm_campaign=harmonic) | 40 million companies, 200 million people and 250 thousand investors, as its pricing page listed them on Nov 9, 2026 | | How fresh the data is | Read from the live web when you ask, with the read time on every value | Bulk data refreshed weekly, delivered through S3, BigQuery or Snowflake | | The unit you pay for | A 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 seats | A 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 refunds | The 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 balance | Its 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 data | Every delivered row goes to your CRM, sheet or agent. Exporting and sharing cost nothing, and rows you already own are never charged again | Internal 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 have | Import 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 labels | Hourly 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 API | MCP server, REST API, Python and TypeScript SDKs, a CLI and A2A. An agent can buy one request with no account, by card or in USDC | Trial 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 goes | Affinity, HubSpot, Salesforce, Pipedrive, Attio, Google Sheets, Excel, Airtable, Notion, Slack, Teams, Zapier, Make, n8n and signed webhooks | CSV 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 ### The founders you back, described your way A Harmonic search runs over the records Harmonic collected, the same records every other Harmonic customer filters. On SpecStream you write what you back: "US startups founded in the last 12 months by people who left OpenAI, Anthropic or Google DeepMind, with what they are building and any round raised". SpecStream reads the request back as parts you can edit, then searches the live web, reads each page and joins what it finds into one record per company. A company that fails one of your conditions is not delivered and not billed. ### Companies that raised this week In the week of November 2, 2026, 494 operating companies filed a Form D reporting $29.51 billion sold. SpecStream reads each filing from SEC EDGAR the day it is filed, at [specstream.ai/data/form-d](https://specstream.ai/data/form-d?utm_source=alternatives&utm_campaign=harmonic), so a company that just raised reaches you that week. Ask for your own cut: one state, one industry, or first raises above an amount. ### A price you see before you spend Harmonic quotes each plan, and Prospeo estimates a minimum commitment of about $25,000 a year. SpecStream prints its rates: 5¢ for a row with up to 5 facts, 15¢ for up to 15 facts and one set of related records, and $1 for a deep row with no limit, plus 5¢ for a founder's email. 1,000 companies with 5 facts cost $50. 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. A run that finds nothing costs nothing. ### The search behind every row leads two public benchmarks SpecStream's search API scores 97.9 F-score on SimpleQA Verified, on all 1,000 official questions (978 correct), and 64.0 item F1 and 43.4 row F1 on WideSearch, on all 200 official tasks. The scores and the method are on [benchmarks](https://specstream.ai/benchmarks?utm_source=alternatives&utm_campaign=harmonic). ### New companies reach your CRM on a schedule 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 and an unchanged row costs 1¢. New matches and changes land in Affinity, HubSpot, Salesforce, Sheets, Slack or Teams with no code, or in your agent through the MCP server. Rows you already own are never charged again. ## Other Harmonic alternatives ### SpecStream The live web data engine for teams and agents. One request in plain words returns every company or founder that fits a thesis as a structured row at 5¢, 15¢ or $1, with $10 of credit on sign-up and no card. A saved request reruns on your schedule with every change labeled. ### Dealroom A startup and funding database priced per seat, billed annually, with a minimum of 3 seats. 10 Premium seats cost €30,000 a year, with 10,000 export credits per seat. On SpecStream exporting a delivered row costs nothing. ### PitchBook A database of deals, funds and contacts sold by annual contract. Multiples reports users paying $25,000 to $40,000 a year for standard team licenses, with a 2 to 3 seat minimum (August 2026). On SpecStream 1,000 companies with 5 facts cost $50. ### DiscoLike A company search with an API and MCP, sold as monthly usage credits. Starter costs $79 a month billed annually at $950, and Pro $159 a month billed annually at $1,910. SpecStream bills only the rows that meet every condition you wrote. ### Tracxn A private company database listing 8.4M+ companies. Its free Lite plan has strict usage limits, exports require credits, and Premium is sold through sales. SpecStream quotes the whole run before it starts. ## How SpecStream scores The same numbers as the benchmarks page, from the official tasks and scorers. ResultsWideSearchCostSimpleQA Verified | | SpecStream | ![](https://specstream.ai/images/benchmarks/parallel.svg)Parallel | ![](https://specstream.ai/images/benchmarks/exa.svg)Exa | ![](https://specstream.ai/images/benchmarks/tavily.svg)Tavily | ![](https://specstream.ai/images/benchmarks/perplexity.svg)Perplexity | | --- | --- | --- | --- | --- | --- | | **Web research**WideSearch, GPT-5.6 Luna | 60.9 | 45.5 | 53.0 | 47.9 | 47.0 | | **Factual accuracy**SimpleQA Verified, GPT-5.6 Luna | 96 | 94 | 91 | 94 | 94 | | **Factual accuracy**SimpleQA Verified, GPT-5.6 Sol | 99 | 97 | 91 | 92 | 95 | ## 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. [Describe your data](https://specstream.ai/signup?src=alternatives-harmonic&utm_source=alternatives&utm_campaign=harmonic&returnTo=%2Fworkspace%2Fask%3Fq%3DUS%2520startups%2520founded%2520in%2520the%2520last%252012%2520months%2520by%2520people%2520who%2520left%2520OpenAI%252C%2520Anthropic%2520or%2520Google%2520DeepMind%252C%2520with%2520the%2520founders%252C%2520what%2520they%2520are%2520building%252C%2520any%2520round%2520raised%2520and%2520a%2520work%2520email) ## Frequently asked questions Something we didn't answer? [Talk to a human](https://specstream.ai/talk-to-a-human.md) 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](https://specstream.ai/benchmarks?utm_source=alternatives&utm_campaign=harmonic). ### 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 pricing](https://specstream.ai/pricing)specstream.ai/pricing, read Nov 9, 2026 2. [SpecStream for agents](https://specstream.ai/agents.md)specstream.ai/agents.md, read Nov 9, 2026 3. [SpecStream benchmarks](https://specstream.ai/benchmarks)specstream.ai/benchmarks, read Nov 9, 2026 4. [SpecStream Form D data](https://specstream.ai/data/form-d)specstream.ai/data/form-d, read Nov 9, 2026 5. [Harmonic pricing](https://harmonic.ai/pricing)harmonic.ai/pricing, read Nov 9, 2026 6. [Harmonic terms of service](https://harmonic.ai/terms-of-service)harmonic.ai/terms-of-service, read Nov 9, 2026 7. [Prospeo, Harmonic pricing (2026)](https://prospeo.io/s/harmonic-pricing-reviews-pros-and-cons)prospeo.io/s/harmonic-pricing-reviews-pros-and-cons, read Nov 9, 2026 8. [Dealroom pricing](https://dealroom.co/pricing)dealroom.co/pricing, read Nov 9, 2026 9. [Multiples, PitchBook alternatives (facts verified Aug 14, 2026)](https://multiples.vc/compare/pitchbook-alternatives/md)multiples.vc/compare/pitchbook-alternatives/md, read Nov 9, 2026 10. [DiscoLike pricing](https://discolike.com/pricing)discolike.com/pricing, read Nov 9, 2026 11. [Tracxn pricing](https://tracxn.com/pricing)tracxn.com/pricing, read Nov 9, 2026