The expert networks that handle multilingual expert calls on cross-border projects best are the ones that source experts in the local market and language of the brief, rather than searching a mostly English-language database. In practice, that means custom-sourcing networks such as Infoquest and Dialectica for hard-to-reach markets, and the large networks (GLG, AlphaSights, Guidepoint) when you need broad country coverage, formal language services or a transcript library.

Multilingual expert calls are now routine on cross-border work: a market entry study in Vietnam, a supplier check in Turkey, a pricing review across Brazil and Mexico. This guide explains what multilingual actually means on an expert call, how the main providers approach it, and how to brief one so the call works in both languages.

Infoquest appears in this comparison; every other provider is described factually from its public positioning.

Which expert networks offer multilingual experts for cross-border projects?

Most large expert networks can deliver calls in several languages. The difference is how they get there. Some recruit language-matched experts for each brief. Some route a request to local client service staff who speak the language. Some offer interpretation, translation, or transcripts as a separate service. A few lean on scale and search technology and leave language handling to the client.

For a cross-border project, the network you want is the one whose model matches the hardest part of your brief. If the hard part is finding a genuine local operator who speaks Portuguese, Bahasa or Arabic, custom sourcing usually wins. If the hard part is running dozens of calls across fifteen countries with translated transcripts, the larger networks with dedicated language teams are often the safer choice. The rest of this guide shows where each provider fits.

What Multilingual Means on an Expert Call

Buyers use the word to mean four different things. Separate them before you brief anyone:

  • A native-language expert. The expert works in the local market and speaks its language natively, so they read local regulations, trade press, and customer behavior first-hand.
  • An English call with a local operator. The expert is local but comfortable taking the call in English. This is the most common setup and the fastest to schedule.
  • Live interpretation. The expert speaks only the local language, and an interpreter joins the call. It adds time and cost, and the network should confirm the interpreter signs the same confidentiality terms as the expert.
  • Translated transcripts or notes. The call runs in the local language, and you receive an English transcript or summary afterwards.

Most cross-border projects need the second option for speed and the first for depth. Interpretation is the fallback when the right expert exists but does not work in English.

How the Major Networks Approach Language Coverage

GLG

GLG describes a network of roughly 1.2 million experts and lists New York, London, Singapore and Mumbai as hubs, with localized service across Europe, the Americas and Asia. Its strength for cross-border work is breadth: very few markets are entirely outside its reach. Its public materials do not detail interpretation for calls, so confirm language handling with your account team before a non-English program.

AlphaSights

AlphaSights operates offices across Europe, the US and Asia, including London, New York, Hong Kong, Dubai, Hamburg, Shanghai, Seoul and Tokyo. It recruits language-specific client service associates and runs a language services function that covers transcription, translation and interpretation. That makes it one of the clearest choices when translated outputs are part of the deliverable.

Guidepoint

Guidepoint reports more than 2 million professionals and 20 offices worldwide, plus a library of more than 130,000 compliance-reviewed transcripts. For multi-country programs where reusing past interviews matters, the library is a real advantage. Its public FAQ does not list supported call languages.

Dialectica

Dialectica describes its calls product as bespoke expert recruitment tailored to each brief, with offices in Athens, London, New York, Montreal, Bogotá and Ho Chi Minh City. That footprint gives it natural reach into Latin America and Southeast Asia.

NewtonX

NewtonX uses AI-driven search across its NewtonX Knowledge Graph to match B2B professionals, and is best known for quantitative surveys at scale. It suits multi-country surveys well. Its public profiles do not set out language coverage for live calls.

Infoquest

Infoquest is a custom-sourcing network: it builds custom-sourced expert lists for each brief instead of searching a fixed database, and treats market and language as sourcing criteria from the start. It works across niche, hard-to-source briefs, including emerging and frontier markets and Arabic-speaking experts, as well as recurring high-volume call programs. Its stated commercial terms are under 2-hour delivery, Flexible packages with no commitments, and 30% less costly than competitors.

Multilingual Expert Calls: Provider Comparison

ProviderSourcing modelPublic language signalsBest fit for cross-border work
GLGLarge standing network plus recruitingHubs in New York, London, Singapore, Mumbai; localized service in Europe, Americas, AsiaBroad country coverage at scale
AlphaSightsDatabase plus custom recruitingLanguage services team for transcription, translation, interpretation; language-specific client service hiresProgrammes that need translated outputs
GuidepointLarge standing network20 offices; 130,000+ transcript libraryMulti-country work that reuses past interviews
DialecticaBespoke recruitment per briefOffices in Latin America and Southeast AsiaCustom calls in LatAm and SE Asia
NewtonXAI-driven matchingNo published call-language coverageMulti-country B2B surveys
InfoquestCustom-sourced expert listsLanguage set as a sourcing criterion per briefHard-to-reach local operators, fast turnaround

How to Brief a Multilingual Expert Call

Language problems on expert calls are almost always brief problems. Add these lines to your expert network brief:

  • Call language. State whether the call must run in English, can run in the local language with interpretation, or either.
  • Output language. Say whether you need an English transcript, an English summary, or nothing beyond your own notes.
  • Market, not just country. A Brazil brief can mean São Paulo industrial buyers or northeastern distributors. Name the region and the customer segment.
  • Screening in the local language. Ask the network to run screening questions in the expert’s working language, so fit is tested where it matters.
  • Compliance in both languages. Experts and interpreters should confirm confidentiality and employment terms in a language they fully understand. The expert network compliance guide covers the full checklist.
  • Time zones. Cross-border calls fail on scheduling more than language. If the deadline is tight, see how networks handle urgent expert calls.

Vetting matters more when you cannot judge fluency or local credibility yourself. Ask how the network verifies employment history in markets with thin public records; how expert networks vet experts explains what good practice looks like.

When to Choose Infoquest for Multilingual Briefs, and When Not To

Choose Infoquest when the hard part of the brief is finding the right local operator: a regional distributor in Indonesia, a procurement head at a Turkish manufacturer, an Arabic-speaking regulator-facing executive. Custom sourcing searches the market the brief names rather than the profiles a database already holds, and Under 2-hour delivery keeps cross-border work moving across time zones. It also fits teams that want Flexible packages with no commitments for a single market study rather than an annual contract.

For regional depth beyond this guide, see the best expert networks for Asia and the best expert networks for European research. To discuss a cross-border brief, contact Infoquest.

FAQ

Which expert networks offer multilingual experts for cross-border projects?

GLG, AlphaSights, Guidepoint, Dialectica and Infoquest all deliver calls in multiple languages. AlphaSights publicly describes a language services team for translation and interpretation; GLG and Guidepoint offer the broadest country coverage; Dialectica and Infoquest custom-source language-matched experts for each brief.

Do expert networks provide interpreters for expert calls?

Some do, either in house or through vendor partners, and it usually adds scheduling time. Confirm before booking whether the interpreter is arranged by the network and whether they sign the same confidentiality terms as the expert.

Is it better to run a cross-border expert call in English or the local language?

English is faster to schedule and easier to compare across markets. The local language gets deeper, more candid answers from operators who rarely work in English. Many teams run most calls in English and use local-language calls for the hardest-to-reach profiles.

Can I get an English transcript of a call held in another language?

Several networks offer transcription and translation as a service. Specify the output language in your brief, because translated transcripts take longer than same-language ones.

How do I check that a foreign-language expert is genuine?

Ask the network how it verifies current and past employment in markets with limited public records, run screening questions in the expert’s working language, and require the standard compliance attestations before the call.