Cornersight vs TheirStack
An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.
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The short answer
Both sides assessedCornersight compared with TheirStack
TheirStack reads job postings to qualify accounts by the technology and hiring they reveal, from $49 a month. Cornersight finds the named people at those accounts who are engaging on LinkedIn. Use TheirStack to choose the accounts and Cornersight to find who to contact first.
TheirStack compared with Cornersight
Cornersight captures the named people engaging with relevant LinkedIn posts, enriched and routed into a CRM or HeyReach from $99 a month. TheirStack reads institutional signals from job postings at the company level. TheirStack gives you a qualified account and the technical reason it fits; Cornersight gives you the people there who are paying attention. The two combine well and neither substitutes for the other.
Choose Cornersight if
Outbound teams and GTM agencies selling into markets where buyers are active on LinkedIn, who want a steady list of people engaging with competitors, industry voices or relevant topics delivered into their own sequencer or CRM, and technical operators who want those leads available to scripts or AI agents through an API or MCP.
Choose TheirStack if
Vendors selling back-office, infrastructure, or developer software whose product never appears on a customer's website, recruiters and staffing firms who need hiring signal at scale, and technical GTM operators who would rather hit an API or an MCP server than click through a dashboard.
Side by side
13 attributes| Attribute | Cornersight | TheirStack |
|---|---|---|
| Category | Signals | Signals |
| Starting price | $99 per month (Starter, 15,000 credits) (free trial) | Free tier on signup, then $49 per month for 1,500 credits or $109 once for 1,000 credits |
| Pricing model | Self-serve monthly plans metered in credits, where one credit is one unique person per monitor, with a free trial on every plan and spend caps per source, per search, per team and for the Engagement Agent. | Credit-based, sold either as a monthly subscription or as one-time packs with no subscription; unlimited team members and no per-seat charge. |
| Free plan | No | Free credits on signup with access to job search, company search, company lookup, enrichment, exports, and email alerts, at low volume. |
| Free trial | Free trial on every plan; length not published. Trial teams get up to 2 keyword searches of 250 leads each and 1,000 Agent checks | Not a time-limited trial; a free credit allowance is included on signup |
| Best for | Outbound teams and GTM agencies selling into markets where buyers are active on LinkedIn, who want a steady list of people engaging with competitors, industry voices or relevant topics delivered into their own sequencer or CRM, and technical operators who want those leads available to scripts or AI agents through an API or MCP. | Vendors selling back-office, infrastructure, or developer software whose product never appears on a customer's website, recruiters and staffing firms who need hiring signal at scale, and technical GTM operators who would rather hit an API or an MCP server than click through a dashboard. |
| Setup time | Minutes to the first source: sign in with Google, paste a LinkedIn profile, company page or post URL, or enter keywords, and leads appear progressively during the first sync. Tuning ICP filters and caps takes a few days of watching what comes in. | Twenty minutes to a first list. Sign up, spend free credits on a query against your best-guess ICP, and read the source postings to see whether the extraction is catching what you expected. API integration is another afternoon. |
| Learning curve | Low. Most of the value comes from choosing sources whose audience matches your ICP, and the Engagement Agent can set those up from a list of topics. | Low for the app, moderate for the judgement. The filters are straightforward; the skill is learning which technology mentions actually indicate ownership rather than aspiration, and building filters that exclude recruitment agency postings. |
| Platforms | Web application, REST API, MCP server, Command line interface | Web application, REST APIs for jobs, companies, technographics, and buying intents, MCP servers, CSV export |
| Compliance | GDPR obligations apply to enriched personal data, No publicly advertised SOC 2 attestation | Job posting data is published business information rather than personal data, which keeps privacy exposure low, No publicly advertised SOC 2 attestation |
| Founded | 2026 | 2021 |
| Headquarters | Not published | Barcelona, Spain |
| Ownership | Bootstrapped | Privately held |
Strengths and limitations
Cornersight
Strengths
- Engagement-based lists reach people who are active on LinkedIn right now, which a filter on recent posters misses because most users react far more than they post.
- No LinkedIn account connection, so there is no session to hand over and no restriction risk on the buyer's own profile.
- A credit model tied to unique people per source, with free fetching and free failed lookups, keeps the bill tied to prospects rather than activity.
- Daily re-syncs capture engagement that arrives days after a post goes live, not just a snapshot at the moment of tracking.
Limitations
- LinkedIn only; buyers who are quiet there, or active elsewhere, produce no signal.
- No job-change, funding, hiring or website-visitor signals, so it covers one slice of the intent landscape.
- Launched in January 2026 and rebuilt in May, so the track record is months long and the product is still changing quickly.
- No published SOC 2, SSO or data-residency options, which rules it out for formal enterprise procurement.
TheirStack
Strengths
- The job posting source sees software that no website crawler ever will, which makes TheirStack the only practical technographic option for back-office, data, and infrastructure vendors.
- Every extracted signal links back to the source posting, so claims are verifiable rather than a black box, and a rep can quote the actual requirement on a call.
- Ingestion of roughly 300,000 postings a day means the freshness ceiling is about a day, far better than the weekly or opportunistic crawls elsewhere in this category.
- The API is included in the same credit balance as the app rather than priced separately, and MCP servers are available, which is a genuinely developer-friendly posture at this price.
Limitations
- Everything is inference. A technology mentioned in a posting is strong evidence, not proof, and companies routinely list tools they are migrating away from, tools a single team uses, and tools copied from a stale template.
- Companies that do not advertise roles publicly are effectively absent, which skews coverage toward larger and faster-growing organisations and away from small established businesses.
- Recruitment agency postings are a persistent noise source: the hiring company in the record may be the agency rather than the end employer, and filtering that out takes deliberate work.
- No storefront or consumer-web technographics, so ecommerce app vendors get nothing useful here.
Pricing compared
Cornersight
Self-serve monthly plans metered in credits, where one credit is one unique person per monitor, with a free trial on every plan and spend caps per source, per search, per team and for the Engagement Agent.
- Starter$99
- Growth$169
- Pro$329
- Scale$599
Cornersight is good value for a team whose buyers live on LinkedIn. $99 a month buys 15,000 unique, enriched engagers, with every delivery route included on every plan, and the per-person credit definition means heavy repeat engagement does not inflate the bill. Against a manual workflow of exporting post engagers and enriching them separately, it pays for itself in hours saved within the first week. The limits are scope and maturity rather than price: one network, no company-level events, and a product less than a year old.
TheirStack
Credit-based, sold either as a monthly subscription or as one-time packs with no subscription; unlimited team members and no per-seat charge.
- Free$0
- Monthly API subscription, entry$49
- Monthly API subscription, mid$169
- Monthly API subscription, high volume$400
- One-time credit packs$109
Model it at two volumes. A founder validating a market buys the $109 one-time pack, pulls 1,000 company records with their inferred stacks, and never pays again; at roughly 11 cents a record that is cheap for data nobody else has. A vendor running continuous outbound sits on the $169 monthly plan for 10,000 credits, or around 1.7 cents a credit, and pulls a few thousand qualified companies a month with the API doing the work. At $400 for 50,000 the unit cost falls under a cent. The pricing is the most honest in the category: no seats, no separate API bill, no annual lock-in, and a free tier that actually lets you check whether your buyers appear in job ads before you spend anything.
Editorial verdict on each
Cornersight
Best ValueCornersight is the tool to buy if your buyers are active on LinkedIn and you want the people engaging with your competitors, your category voices or your own content as enriched leads every morning. It does one signal thoroughly, re-syncs daily so late engagement is not lost, charges per unique person rather than per interaction, never touches your LinkedIn account, and delivers into HeyReach, a CRM or an AI agent on every plan from $99 a month. Its limits are clear: one network, no company-level events, and a product less than a year old with no compliance paperwork. With Trigify closing, it is the most direct replacement in this category for a LinkedIn engagement motion, and the free trial makes testing it on a handful of competitor profiles a low-risk afternoon.
Read the full Cornersight profileTheirStack
TheirStack is the best-priced serious signal tool in this category and the only sensible option if the software you sell lives somewhere a crawler cannot reach. Reading job ads rather than websites is not a clever workaround, it is a structurally better view of a company's internal stack, and 300,000 new postings a day gives it a freshness advantage that weekly-crawl vendors cannot close. Buy the $109 one-time pack first and check whether your buyers actually post job ads, because if they do not, nothing else about the product matters. If they do, the $169 monthly plan with unlimited seats and the API included is a genuinely cheap foundation for an account-selection motion. Just build the verification habit early: this is inference, every record links to the posting it came from, and the teams that read the source before dialling get very different results from the ones that trust the label.
Read the full TheirStack profileCornersight profile last reviewed 2026-10-11; TheirStack last reviewed 2026-08-22. Pricing is compiled from public sources and can change without notice. See our methodology.
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Frequently asked questions
6 questionsWhat is the difference between Cornersight and TheirStack?
TheirStack reads job postings to qualify accounts by the technology and hiring they reveal, from $49 a month. Cornersight finds the named people at those accounts who are engaging on LinkedIn. Use TheirStack to choose the accounts and Cornersight to find who to contact first.
Is Cornersight or TheirStack cheaper?
Cornersight starts at $99 per month (Starter, 15,000 credits) (free trial). TheirStack starts at Free tier on signup, then $49 per month for 1,500 credits or $109 once for 1,000 credits. The billing models differ, so the entry price is rarely the whole cost. Cornersight pricing model: Self-serve monthly plans metered in credits, where one credit is one unique person per monitor, with a free trial on every plan and spend caps per source, per search, per team and for the Engagement Agent. TheirStack pricing model: Credit-based, sold either as a monthly subscription or as one-time packs with no subscription; unlimited team members and no per-seat charge.
Does Cornersight or TheirStack have a free plan?
Cornersight has no free plan. Trial terms: Free trial on every plan; length not published. Trial teams get up to 2 keyword searches of 250 leads each and 1,000 Agent checks. TheirStack has a free plan. Free credits on signup with access to job search, company search, company lookup, enrichment, exports, and email alerts, at low volume. Trial terms: Not a time-limited trial; a free credit allowance is included on signup.
Who should choose Cornersight?
Outbound teams and GTM agencies selling into markets where buyers are active on LinkedIn, who want a steady list of people engaging with competitors, industry voices or relevant topics delivered into their own sequencer or CRM, and technical operators who want those leads available to scripts or AI agents through an API or MCP.
Who should choose TheirStack?
Vendors selling back-office, infrastructure, or developer software whose product never appears on a customer's website, recruiters and staffing firms who need hiring signal at scale, and technical GTM operators who would rather hit an API or an MCP server than click through a dashboard.
What are the best alternatives to Cornersight and TheirStack?
SaaSTracker profiles 18 products in Buying Signals & Intent. The Summer 2026 awards in the category went to Crunchbase (Category Leader), Unify (Momentum), WhiteWhale (Innovation). Every profile is compiled from primary sources, so a shortlist can be built from pricing, limitations, and fit rather than from star ratings.
