GLG vs AlphaSights: which expert network should you choose?

GLG and AlphaSights are the two most recognized expert networks, and the core difference is simple: GLG is built for enterprise scale and breadth, while AlphaSights is built around a high-touch, service-led model that curates a shorter list of experts for each request. If you need the widest possible reach across industries and geographies, GLG is usually the default answer. If you want a relationship manager to hand-pick and manage experts for you, AlphaSights is the name buyers reach for.

That framing covers most decisions, but it hides a lot of nuance around speed, compliance, and cost, and it leaves out a third option that has changed how many strategy, product, and investment teams source primary research. This guide compares GLG and AlphaSights fairly, then explains where a modern on-demand platform like CleverX fits.

What expert networks actually do

An expert network connects you with practitioners who have first-hand experience in a market, product category, or function, and arranges paid conversations, usually one-hour phone or video calls. Consultants use them to pressure-test hypotheses, private equity teams use them for commercial due diligence, and corporate strategy teams use them to fill knowledge gaps before a decision. If you are new to the model, our primer on how companies connect with industry specialists walks through the mechanics, and our complete walkthrough of expert network services covers how requests, screening, and calls actually work day to day.

The value is speed to insight. Instead of spending weeks recruiting a former category manager or a hospital procurement lead on your own, you brief a network and get relevant experts within days. GLG and AlphaSights both do this well. The differences show up in how they do it, and what it costs you.

GLG: the enterprise scale option

Gerson Lehrman Group, almost always called GLG, is generally regarded as the largest expert network by network size and revenue. Its main advantage is breadth. Across sectors, functions, and regions, GLG can usually surface relevant experts for even obscure requests, which matters when your research spans many verticals or moves into hard-to-reach markets. Our overview of the largest expert networks by size and market share puts GLG’s scale in context alongside the rest of the field.

Beyond one-on-one calls, GLG has expanded into surveys, events, learning and development, and other research products, so larger enterprises often use it as a broad research partner rather than a single-purpose vendor. For a global consultancy or a large corporate that runs hundreds of expert interactions a year across many teams, that breadth and the ability to consolidate spend under one contract is a real draw.

The trade-offs follow from the scale. Because the network is so large, the experience can feel more transactional than boutique competitors, and the quality of curation can depend on which account team you work with. GLG is typically structured around enterprise subscriptions, which favor high-volume buyers over teams that only need a handful of calls.

GLG tends to fit when you:

• Run high volumes of expert calls across many industries
• Need deep coverage in niche or emerging markets
• Want a single vendor for calls, surveys, and events
• Have the budget and volume to justify an enterprise agreement

AlphaSights: the high-touch service option

AlphaSights built its reputation on service. Rather than positioning itself as the biggest network, it emphasizes responsiveness and curation, with client-facing associates who interpret your brief, recruit or screen experts specifically for it, and manage scheduling closely. For many buyers, that hands-on layer is the product. You are paying not just for access but for someone to do the sourcing legwork and give you a tight, relevant shortlist.

This model tends to appeal to consultants and investors who value a consistent, responsive point of contact and who would rather delegate the recruiting and coordination than run it themselves. The curation can mean fewer, more relevant experts per request instead of a long list you have to filter. When your questions are senior or specialized, that white-glove screening can save meaningful time, which is why AlphaSights is a common choice for the kind of expert interviews that support investment and consulting research.

The trade-offs mirror the strengths. High-touch service is priced accordingly, and like GLG, AlphaSights typically works through negotiated agreements rather than transparent per-call pricing. The service-led model also means you are somewhat dependent on the account team’s speed and network depth for any given request, and coverage in very obscure niches may not match the largest network.

AlphaSights tends to fit when you:

• Want an account team to curate and manage experts for you
• Value responsiveness and a tight, screened shortlist
• Run senior or specialized interviews where screening matters
• Prefer to delegate scheduling and coordination

GLG vs AlphaSights: side-by-side comparison

The table below summarizes how the two networks generally compare. Treat it as a directional guide rather than a spec sheet, since both companies negotiate terms privately and adapt to each client.

Dimension	GLG	AlphaSights
Positioning	Largest network, enterprise scale	High-touch, service-led curation
Core strength	Breadth across industries and regions	Responsiveness and hand-picked shortlists
Reach	Very broad, strong in niche and emerging markets	Broad, curated per request
Service model	Account teams plus self-serve at scale	Associate-led, hands-on coordination
Products	Calls, surveys, events, learning	Primarily expert calls and research support
Speed	Fast for common profiles	Fast, with curation before delivery
Compliance	Established enterprise compliance program	Established enterprise compliance program
Cost model	Enterprise subscription or retainer	Negotiated agreement, service-led
Best for	High-volume, multi-vertical enterprises	Teams that want managed, curated sourcing

For a wider view of how both stack up against other providers, our complete comparison of expert network platforms covers the broader market, including newer on-demand entrants.

How they compare on the factors that matter

Reach and coverage

If sheer coverage is your priority, especially in obscure or emerging markets, the largest network has an edge simply because more experts are already in the system. AlphaSights closes much of that gap through active recruiting per request, so in practice you often get relevant experts either way. The difference shows up at the extremes: unusual geographies, very rare roles, or research that spans dozens of unrelated categories at once.

Speed

Both networks are fast for common profiles and can often schedule calls within a day or two. Speed is governed less by brand and more by how niche your request is. When you need a former VP of supply chain at a specific competitor, or a C-level executive who is hard to reach, timelines stretch for everyone because the expert has to be found, screened, and scheduled. Curation-heavy models add a screening step, which can slow first delivery slightly but often reduces the time you spend filtering irrelevant profiles.

Service model

This is the clearest dividing line. GLG offers account support but is large enough that the experience can vary and lean self-serve at scale. AlphaSights leans into hands-on service as its differentiator. If you want to offload sourcing and coordination, the service-led model earns its premium. If you would rather move quickly on your own, heavy service can feel like overhead you are paying for.

Compliance

Both maintain compliance programs that regulated investors rely on, including expert screening, terms that restrict material non-public information, and audit trails. This is a major reason established networks remain the default for public-market and private-equity due diligence. Remember that compliance is shared: your firm still owns its own policy, chaperoning where required, and record keeping, no matter which vendor you choose.

Cost model

Neither company publishes pricing, and we will not invent numbers here. What is well understood in the market is that both typically work through negotiated annual agreements, often built around a committed number of expert interactions with overage fees beyond that. That structure rewards high-volume buyers and can be hard to justify for a team that needs occasional access or a single project’s worth of calls. This is exactly the gap that on-demand platforms have moved to fill.

Where a modern on-demand platform fits

Both GLG and AlphaSights are excellent at what they do, and for large enterprises running continuous, high-volume research across verticals, a full-service network is often the right home for that spend. But a growing number of strategy, product, and investment teams do not need a retainer. They need a few of the right verified experts, quickly, without committing to an annual contract or waiting on an account team’s queue.

That is the problem CleverX was built to solve. CleverX is an on-demand B2B research platform with more than 8 million professionals verified through both work email and LinkedIn, across 150-plus countries. Instead of routing every request through an account manager, you target the exact experts you need, whether that is procurement leaders, clinicians, engineers, or C-suite decision makers, and reach them directly. Typical delivery runs about two to five days.

The commercial model is the other difference. CleverX uses pay-as-you-go credits with no retainer, so a lean team can run one project without an enterprise commitment, and a larger team can scale usage up or down without renegotiating a contract. For research that goes beyond interviews, CleverX also supports surveys and AI Interview Agents that can run structured conversations at scale, which is useful when you want both qualitative depth and a larger sample.

Verification is the point that matters most for research quality. Because every professional is verified by work email and LinkedIn, you know the person you are talking to actually holds the role they claim, which reduces the risk of misrepresented experts that any network has to guard against. If you want to see how on-demand access compares with traditional networks in detail, our guide to the best expert network platforms lays out the options side by side.

None of this makes the traditional networks obsolete. It gives you a third lane. Use a full-service network when you want white-glove management and very high volume across many verticals. Use an on-demand platform when you value speed, cost control, and direct access to verified experts. Many teams end up using both, matching the tool to the project.

How to choose

Start with your real constraints rather than the brand. If you run continuous, multi-vertical research and want a partner to manage it, GLG’s scale is compelling. If you want curated, hand-managed sourcing and responsive service, AlphaSights is a natural fit. If your priority is verified experts fast, without a retainer, an on-demand platform like CleverX is worth a serious look.

It also helps to be clear about the research itself before you pick a vendor. Knowing your questions, your target profiles, and how you will use the answers makes any network more effective. Our market research methodology guide is a good starting point for structuring that work, and if the goal is sharper product calls, our guide on turning product research into better product decisions shows how to move from raw interviews to decisions.

The best choice is the one that matches your volume, your budget, and how much service you actually want to pay for. For many modern teams, that increasingly means a mix: a traditional network for the heavy, managed work, and an on-demand platform for the fast, targeted research that used to get stuck in a contract negotiation.

Ready to try the on-demand approach? Start recruiting verified experts on CleverX and run your next project without a retainer.

Frequently asked questions

What is the main difference between GLG and AlphaSights?

GLG is the largest expert network and is built for enterprise scale and breadth across many industries and geographies. AlphaSights is known for a high-touch, service-led model where relationship managers curate a shorter list of experts around each request. In short, GLG optimizes for reach and volume, while AlphaSights optimizes for hands-on service and curation.

Which expert network is faster for sourcing experts?

Both can turn around requests quickly, often within a day or two for common profiles, because both rely on account teams to screen and schedule calls. Speed depends more on how niche your request is than on the brand. For rare or senior profiles, timelines can stretch as the team recruits new experts to fit your brief.

Do GLG and AlphaSights charge a retainer?

Most enterprise expert network relationships are structured around annual subscriptions or retainers that bundle a set number of expert interactions, with overage fees beyond that. Pricing is negotiated and not published publicly, so exact figures vary by client size, usage, and contract term. Smaller teams sometimes find these commitments hard to justify.

Are expert networks compliant for regulated investors?

Established networks like GLG and AlphaSights maintain compliance programs, including screening, terms that restrict material non-public information, and audit trails, which is why they are widely used by regulated investors. You still carry responsibility for your own compliance policy, call chaperoning where required, and record keeping on your side.

What is a good alternative to GLG and AlphaSights?

Teams that want verified experts quickly without an annual retainer often use an on-demand platform. CleverX gives direct access to more than 8 million professionals verified by work email and LinkedIn, with pay-as-you-go credits, so you can run interviews or surveys without a long-term contract.

When should I use a full-service network instead of an on-demand platform?

Choose a full-service network when you need heavy white-glove support, want an account team to manage scheduling and compliance for you, or run very high volumes of calls across many verticals. Choose an on-demand platform when you value speed, cost control, and direct access to verified experts without a retainer.