Happenstance vs The Swarm
The Swarm calls itself the relationship data company, and it means it literally. That's the comparison: an ingredient you build with, or an answer you can act on.
By Jerry Feng, Growth at Happenstance. Updated September 1, 2026.
The short version
The Swarm, if you're building on relationship data and want the dataset and the API; Happenstance, if you want the question answered inside the product. The Swarm pools a team's networks through connectors and layers a 500M-profile dataset over them: free up to 10 connectors with no API, then Premium at $99 per company per month for 50 connectors, the whole database and the full API. Happenstance connects seven sources per person, pools teams through free unlimited groups, and its free plan includes the API and MCP server.
The Swarm details from theswarm.com, its pricing page, its data API page and its help and developer documentation.
Choose Happenstance if
- You want the question answered where you ask it, not in a tool you wire up afterwards
- The tie has to be evidenced: an email answered, a meeting attended, a follow, a saved connection
- You're one person, or a team that won't budget for connector seats
- Calendar, Google Contacts, Twitter and Instagram belong in the graph
- You want an API and MCP server without a platform fee
Consider The Swarm only if
- You're building a product on relationship data and want it as a documented API
- Coverage of people nobody on the team has met is the point of the purchase
- Daily job-change tracking across 100M+ monitored profiles drives your motion
- Your pipelines run through Clay, HubSpot, Attio or Airtable
- Per-company pricing beats per-person pricing at your headcount
The two products, priced and sourced
The Swarm publishes enough for a full comparison, including the connector caps that decide what its plans are worth.
| Happenstance | The Swarm | |
|---|---|---|
| Company | ||
| Funding | Backed by Y Combinator | $8M raised; $4M seed led by 500 Global, backed by HubSpot Ventures |
| Users | 500,000+ | Not published |
| Security | SOC 2 compliant, DTI Trust Level 2; email read as headers only | Not published |
| Pricing | Free (the whole product, usage limits on chat and web search); Pro $30/mo or $24/mo yearly | Free (10 connectors, no API); Premium $99 per company per month, or $2,990 per company per year; Enterprise custom |
| Pricing axis | Per person, and only on Pro | Per company, capped by connectors |
| Prices checked | August 2026 | August 2026 |
| Where the graph comes from | ||
| Built from | The accounts each person connects, plus the friends and groups who pool with them | Connector imports, plus a 500M+ profile external dataset |
| External dataset | Profile enrichment from external providers; web search beyond your network | 500M+ profiles, 50M+ companies with fundraising data, 50+ data points per profile |
| Coverage of people nobody has met | Web search, without inferring a relationship | Network mapper over work-experience correlations and common investors |
| Job-change tracking | No | Daily, across 100M+ monitored profiles |
| Evidence behind a tie | An email answered, a meeting, a follow, a saved connection | Imported connections plus dataset correlations |
| Connected sources | ||
| Email and calendar | Gmail, Outlook, Google Calendar | Not published as connector sources |
| Address books | Google Contacts | Google Contacts |
| Yes | Yes | |
| Twitter and Instagram | Yes | No |
| CRM import | No | Yes |
| Pooling a team | ||
| How pooling works | Groups: free, unlimited, mutual, no seat required | Connectors: 10 on Free, 50 on Premium, custom on Enterprise |
| Cost of adding one more person | Nothing | A connector against the cap |
| Largest pooled network | 380,000+ people searchable | Not published |
| Search and answers | ||
| Plain-English questions in the product | Yes | Mainly through its MCP in Claude or ChatGPT |
| Paths ranked by relationship strength | Ranked on recorded interaction | Mapped and ranked over combined data |
| AI research on a person | Yes | Live enrichment, 3 credits, Enterprise |
| Export | CSV export on Pro | CSV up to 10,000 people on Premium |
| API and integrations | ||
| Public API | Every plan, credit-metered | Paid tiers only; 12,000 credits a month on Premium, $0.10 per credit over |
| MCP server | Every plan, credit-metered | Claude, ChatGPT and any MCP client |
| ChatGPT app, Claude, CLI | Yes | MCP clients, including Cursor |
| RevOps integrations | No | Clay, HubSpot, Attio, Airtable |
The Swarm sells the data, Happenstance answers the question
The Swarm's own description is the most useful sentence either company has written about this comparison: the relationship data company. Teams import networks through connectors, a 500M-profile dataset with daily job-change tracking sits underneath, and the output is data. In the app, in a CSV, through a documented API, through one of the better MCP servers in the category. When you want a plain-language answer, you bring a tool that can produce one, and Claude, ChatGPT or Clay is the intended path.
Happenstance is built from the other end. You type the question and get the answer, with the people ranked and the introducer named under each one. Nothing has to be piped anywhere first, which is why it works for a founder with no data stack as well as a team with one.
Who on my team knows an engineering leader at Snowflake?
Example4 engineering leaders at Snowflake are in the team's network; two run platform groups.
| Person | Mutuals |
|---|---|
ML Mei LinEngineering Manager at Snowflake | |
AF Adam FoleyDirector of Engineering at Snowflake | |
FH Farah HaidarHead of Engineering, Data Cloud at Snowflake |
Neither approach is a substitute for the other. If you're building a sourcing product, an answer engine is the wrong shape and you want fields, timestamps and a credit meter. If you're trying to get into an account this week, a dataset is the wrong shape and you want a name.
What The Swarm's connector caps cost
The Swarm's team model is the connector: an active connector is a teammate who logs in and imports from LinkedIn, Google Contacts or a CRM, and a passive connector is a person added by hand. The connector count is also the price: 10 on Free, 50 on Premium, custom above that. It is a coherent model, and it means the quality of your warm paths is a function of how many connectors you've paid for and how many teammates connected an account.
Groups work the other way around. A group is free, unlimited, and mutual: everyone in it searches everyone else's network, and each person's connections stay visible only to them, their friends and their groups. Nobody counts against a cap, which is why groups fill up with the people a seat-based tool never covers. Advisors, angels, portfolio founders, alumni, the former colleague who now runs sales somewhere useful. The largest groups make 380,000+ people searchable.
For a fifty-person company the two models can land at similar money, since $99 per company per month is cheap and Happenstance is free until someone wants Pro. For a five-person startup, or a group of founders who don't work at the same company at all, only one of the two models works.
Where The Swarm is ahead: the API
The Swarm is API-first by design: enrichment, the network mapper, autocomplete, job-change tracking and fundraising data, documented for builders, with 12,000 credits a month on Premium and overage at ten cents. If your job is to put relationship data inside your own product, that's a serious offering.
What Happenstance ships is a public API and an MCP server over an answer engine, included on the free plan, with a ChatGPT app, Claude and Claude Code integrations and a CLI beside them. You call it and get ranked people with paths, not rows to score yourself. Different product, same protocol. The developer docs show what comes back.
The free plan is where the two split. The Swarm gives no API access at all on Free, so a developer evaluating it is evaluating the app. Happenstance's API and MCP server are on the free plan, which makes the evaluation cost nothing.
Running both, and what each one is for
Keep The Swarm if it is already feeding Clay, HubSpot or Attio, if the job-change feed drives your outbound, or if an engineer on your team is building on the Data API. The Commsor acquisition in July 2026 folded more community and network features in, so the data surface is getting broader, not narrower.
Add Happenstance for the question the dataset does not answer: which of the people we know well would make this introduction. It's free, it needs no connector budget, and it reads sources the connector model does not, including calendar, Google Contacts, Twitter and Instagram. 500,000+ people use it.
Move off The Swarm when you were only ever using the search box: a small team on the free plan bounded by ten connectors, a founder who wanted warm paths rather than a dataset, a recruiter who needs the person and not the export. You lose the external coverage, job-change tracking and the RevOps pipelines, and you gain the sources, free pooling and answers in the product. Search your network free.
“As a recruiter, thank you. [Happenstance] is better than the Swiss Army knife of OSINT tools we rely on.”
What Happenstance can see
Email is read as headers only. Message content and attachments never reach our servers. Yes. Your connections are searchable only by you, the friends you accept, and the groups you join, and sharing is always mutual. Your public profile shows a constellation of named people you know by default, which you can turn off anytime. We never share, sell, or use your data to train AI models. Happenstance is SOC 2 certified and DTI Trust Level 2; the full list of what is stored and for how long is on the security page.
Frequently asked questions
The difference
What's the difference between Happenstance and The Swarm?
Where the question gets answered. The Swarm assembles relationship data, your team's imported networks plus a 500M-profile external dataset, and hands it to you through the app, exports, an API and an MCP server, so the plain-language asking usually happens in Claude, ChatGPT or Clay. Happenstance is the asking: you type the question, and it returns ranked people with the path and the evidence behind each one.
Is The Swarm a data provider or a product?
Both, with the emphasis on data. It calls itself the relationship data company and sells a documented Data API alongside the app, with 500M+ profiles, daily job-change tracking, 50M+ companies with fundraising data and per-field timestamps. The app is where a team browses and exports that data; the API is the product it leads with.
Does Happenstance find people nobody on the team has met?
Through web search, yes, but not by inferring a relationship. Happenstance ranks paths only where there's a record of the tie, and runs web search beyond the network when nothing fits. The Swarm's network mapper explores extended networks around a company using work-experience correlations, common investors and its own signals, which covers people your team has never met. That coverage is The Swarm's.
Pricing
How much does The Swarm cost?
Free is $0 for up to 10 connectors with no API access. Premium is $99 per company per month, or $2,990 per company per year, for 50 connectors, 12,000 API credits a month, overage at $0.10 per credit, the entire database, the full API and CSV exports up to 10,000 people. Enterprise is custom.
Is The Swarm free?
There is a free plan, and its ceiling is the thing to read. Free gives up to 10 connectors, combined network access, enriched profiles and community support, with no API access at all. Since the API is the product, the free plan is a preview of the data model rather than a working developer tier.
Is Happenstance free?
Yes. The free plan is the whole product, Sidedoor included, with unlimited connected accounts, friends and groups, and the public API, MCP server, ChatGPT app, Claude integrations and CLI on every plan. The limits are on chat usage and on web searches beyond your network, and API and MCP calls use credits. Pro at $30 a month, or $24 a month billed yearly, raises them.
Connectors and teams
What are The Swarm's connectors?
People whose professional histories feed the team graph. Active connectors are team members with logins who import from LinkedIn, Google Contacts and CRMs; passive connectors are people added manually. The connector count is the pricing axis: 10 on Free, 50 on Premium, custom on Enterprise. Happenstance's equivalent is friends and groups, which are unlimited and free; sharing is always mutual.
Is Happenstance or The Swarm better for a team?
For a RevOps team piping relationship data into Clay, HubSpot or Attio, The Swarm, and its per-company pricing is cheap at scale. For a team that wants to ask who we know and get an answer, Happenstance, where a group pools every member's network for free with no connector cap and no seat to buy. The largest groups make 380,000+ people searchable.
Data and coverage
Which has more data, Happenstance or The Swarm?
The Swarm publishes the bigger dataset: 500M+ profiles, 100M+ monitored for job changes, 50M+ companies with fundraising data and 50+ data points per profile. Happenstance's graph is what you, your friends and your groups connected, enriched from external providers, with web search beyond it. The two aren't the same asset: one is coverage, the other is evidence that a relationship exists.
Does The Swarm track job changes?
Yes, daily, across 100M+ monitored profiles, with fundraising data on companies and timestamps on individual fields. Happenstance enriches every profile so a person's current title and company show in the result; a sales or recruiting team that runs on a job-change trigger keeps The Swarm's feed for it.
Developers
Which has the better API, Happenstance or The Swarm?
The Swarm's is built for builders and is API-first: enrichment, network mapper, autocomplete, job-change tracking and fundraising data, documented for builders, with 12,000 credits a month on Premium and no API at all on Free. Happenstance's public API and MCP server are included on the free plan and query an answer engine over relationships that happened rather than a dataset you assemble.
Do Happenstance and The Swarm both have an MCP server for Claude and ChatGPT?
Yes. The Swarm's MCP works with Claude, ChatGPT and any MCP client, exposes profile, company and warm-path tools, and charges one credit for three of its data-retrieval tools. Happenstance ships an MCP server, a ChatGPT app, Claude and Claude Code integrations and a CLI on the free plan, so neither side can claim MCP as a differentiator.
Can I use The Swarm and Happenstance together?
Yes; they overlap little. Keep The Swarm for the dataset, the job-change feed and the RevOps pipelines into Clay, HubSpot and Attio. Run Happenstance for the question of who your team already knows well enough to ask, which is free and needs no connector budget; nothing syncs between them.
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