Cornersight vs Syften
An independent, review-free comparison compiled by the SaaSTracker editorial team. Both products are profiled in full, and neither can pay for placement here.
Still shortlisting? Browse the best in Buying Signals & Intent for every option we track, with award winners called out.
The short answer
Both sides assessedCornersight compared with Syften
Syften listens to Reddit, Hacker News, Stack Exchange, public Slack communities, GitHub and podcasts from $29.95 a month, but does not list LinkedIn and stops at the alert. Cornersight covers only LinkedIn and turns each engager into an enriched lead. The two cover different networks and pair well: Syften for replying in community threads, Cornersight for building outbound lists from LinkedIn.
Syften compared with Cornersight
Cornersight covers the network Syften does not list, LinkedIn, capturing everyone who engages with tracked posts, profiles or keyword searches and enriching them into leads from $99 a month. Syften covers far more of the developer and startup web, including Hacker News, Stack Exchange, public Slack communities, GitHub, and podcasts, from $29.95, but stops at the alert. Pick Cornersight when the next step is an outbound message to a named buyer; pick Syften when the next step is replying in the thread where the question was asked.
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 Syften if
Founders, developer tool companies, indie software businesses, and small B2B teams whose buyers ask for recommendations and complain about competitors in public technical and startup communities, and who want those conversations in Slack or email for a few dollars a day rather than through an enterprise signal contract.
Side by side
16 attributes| Attribute | Cornersight | Syften |
|---|---|---|
| Category | Signals | Signals |
| Starting price | $99 per month (Starter, 15,000 credits) (free trial) | $29.95 per month (Entry) (14 days trial) |
| 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. | Flat monthly subscription per account with no seats, tiered by the number of filters, daily result caps, archive depth, and feature access; X and YouTube are paid add-ons. |
| Free plan | No | No |
| 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 | 14 days on the PRO plan, no credit card required |
| 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. | Founders, developer tool companies, indie software businesses, and small B2B teams whose buyers ask for recommendations and complain about competitors in public technical and startup communities, and who want those conversations in Slack or email for a few dollars a day rather than through an enterprise signal contract. |
| 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. | Minutes to a first alert: register, enter your product name or domain, and the trial shows matching mentions from the last 60 days. A tuned filter set with AI rules and Slack routing is a few hours of iteration spread over the first week. |
| 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 to start, moderate to master. The skill is filter design: scoping by site and type, excluding common false matches, and writing AI accept rules in the documented "true if ...; false otherwise" form. The documentation has worked examples per source and a guide to good filters. |
| Platforms | Web application, REST API, MCP server, Command line interface | Web application, Email alerts, Slack, RSS, Atom, and JSON feeds, REST JSON API, Webhooks, MCP endpoint |
| Compliance | GDPR obligations apply to enriched personal data, No publicly advertised SOC 2 attestation | No SOC 2 or ISO attestation published, Paddle acts as merchant of record for billing and tax |
| Founded | 2026 | 2019 |
| Headquarters | Not published | Kraków, Poland |
| Ownership | Bootstrapped | Bootstrapped |
| Starting price | $99 per month (Starter, 15,000 credits) | $29.95 per month (Entry), billed monthly |
| Free trial | On every plan; length not published | 14 days on PRO, no credit card |
| API access | REST API, MCP server and CLI on every plan; 120 reads and 60 writes per minute per team | Standard ($49.95/mo) and PRO; webhooks and MCP on PRO only |
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.
Syften
Strengths
- The cheapest credible listening tool in this category, with a $29.95 entry, a $49.95 plan that includes AI filtering and Slack, and no per-seat charge at any tier.
- Coverage of venues that broader social listening suites skip: public Slack communities, Stack Exchange, GitHub comments, Lobsters, Indie Hackers, and podcast transcripts.
- A documented, precise filter language with domain matching that catches links and obfuscated mentions, not only names.
- AI filtering keeps rejected matches visible with a reason, so precision can be tuned without silently discarding leads.
Limitations
- LinkedIn is not a listed source, so markets where B2B conversation happens there are poorly served.
- No enrichment, scoring, or CRM task creation. You receive a username, a link, and text, and anything beyond that is your own integration work.
- X and YouTube cost extra and are unavailable on Entry, so the headline price does not include two major networks.
- Scraped sources can disappear: the changelog records the Facebook Groups scraper shut down in 2024 and the Quora scraper in 2025.
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.
Syften
Flat monthly subscription per account with no seats, tiered by the number of filters, daily result caps, archive depth, and feature access; X and YouTube are paid add-ons.
- Entry$29.95
- Standard$49.95
- PRO$119.95
- Tailor madeCustom
At $49.95 a month, Standard buys continuous monitoring of every subreddit, Hacker News, Stack Exchange, public Slack communities, GitHub comments, podcasts, and the web, with an AI filter in front of it and Slack delivery, for a whole team. That is less than a single seat of most tools in this category. The value is highest for developer and startup-facing products, where one well-answered recommendation thread can pay for a year, and lowest for anyone whose buyers are not publicly active in these venues. Because there is no enrichment, budget for a contact tool if you intend to reach people off-platform, but for teams that reply in the thread itself, the subscription is the whole cost.
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 profileSyften
Syften is the most cost-effective way in this category to hear people ask, in public, for the thing you sell. It covers the developer and startup web more completely than tools several times its price, including Hacker News, Stack Exchange, public Slack communities, GitHub comments, and podcasts, and its filter language and auditable AI rules keep the feed readable. Standard at $49.95 a month, with no seats, is the plan to buy for a small team. What it does not do is just as clear: no LinkedIn, no enrichment, and no CRM tasks, so it suits teams that respond in the conversation rather than teams that want a lead list. If your buyers are publicly active in technical and startup communities, start the free trial, look at the 60 days of backlog it shows on day one, and you will know within an afternoon whether the signal exists for you.
Read the full Syften profileCornersight profile last reviewed 2026-10-11; Syften last reviewed 2026-09-26. Pricing is compiled from public sources and can change without notice. See our methodology.
The best in Buying Signals & Intent
18 trackedBuying signal platforms watch public and first-party events, job changes, hiring, funding, technology adoption, community activity, and product usage, then surface the accounts that just became worth contacting.
The funding round is the buying signal, and Crunchbase is where it gets recorded first.
Starter at $99 a month captures and enriches 15,000 LinkedIn engagers, charged once per person per source, with HeyReach, webhook, API and MCP delivery on every plan.
Signal fires, agent researches, sequence sends: Unify collapsed the intent stack into one product and grew like it.
Write the signal in plain English and get the answer every morning with the quote attached, turning monitoring into a language interface.
Follow your accounts, pick from 25 alert categories, and the first digest arrives next morning; Owler has no query language and nothing to configure.
Frequently asked questions
6 questionsWhat is the difference between Cornersight and Syften?
Syften listens to Reddit, Hacker News, Stack Exchange, public Slack communities, GitHub and podcasts from $29.95 a month, but does not list LinkedIn and stops at the alert. Cornersight covers only LinkedIn and turns each engager into an enriched lead. The two cover different networks and pair well: Syften for replying in community threads, Cornersight for building outbound lists from LinkedIn.
Is Cornersight or Syften cheaper?
Cornersight starts at $99 per month (Starter, 15,000 credits) (free trial). Syften starts at $29.95 per month (Entry) (14 days trial). 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. Syften pricing model: Flat monthly subscription per account with no seats, tiered by the number of filters, daily result caps, archive depth, and feature access; X and YouTube are paid add-ons.
Does Cornersight or Syften 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. Syften has no free plan. Trial terms: 14 days on the PRO plan, no credit card required.
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 Syften?
Founders, developer tool companies, indie software businesses, and small B2B teams whose buyers ask for recommendations and complain about competitors in public technical and startup communities, and who want those conversations in Slack or email for a few dollars a day rather than through an enterprise signal contract.
What are the best alternatives to Cornersight and Syften?
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.
