Every company running teams across more than one country hits this question sooner or later: which corporate language training provider is actually worth the investment?
According to the World Economic Forum, 39% of the skills we use at work today will change or become obsolete within the next five years, and communication remains among the most-cited skills essential to business. And the gap isn’t just theoretical: in our 2026 Global Benchmark Survey, conducted with 377 HR and L&D leaders across six continents, 74% of respondents said additional languages are very or fairly important to their business, but only 26% think most of their team has an adequate level today.
It’s no surprise that language training budget has become a leadership meeting topic, not just an HR one.
If you’re comparing options right now, the short answer is: it depends on what your team needs most. Throughout this guide, you’ll find a summary of each of the ten most-searched providers on the market (goFLUENT, Open English, EF, Preply, Rosetta Stone, Berlitz, Busuu, Speexx, Slang, and Dexway), what each one offers, which company profile each was built for, and where Voxy fits into the conversation. We’ll keep this comparison updated every year, so save the link for when it’s time to review the budget again.
How we evaluated each provider
We compared the ten providers using four criteria that genuinely affect the outcome of a corporate language program:
- Teaching methodology and format: live classes with a teacher, self-study, or a mix of both.
- The role of artificial intelligence: whether AI replaces the teacher or works alongside them.
- Content and personalization: whether the content is generic or can be built from the company’s own material.
- Service and outcome measurement: whether the provider delivers just the platform, or also manages the program and shows ROI.
The 10 corporate language training providers most compared with Voxy
goFLUENT
goFLUENT has a self-study catalog covering nearly 50 languages and caters mainly to very large multinationals.
Live conversation classes, however, are offered in six core languages, and in one-on-one classes the teacher is assigned based on schedule availability rather than the learner’s choice, so students can get a different teacher each session. It’s a fit for companies that prioritize broad global language coverage over having a program customized to individual learner and company needs.
Open English
Open English is strong in Latin America and offers corporate English with unlimited drop-in live classes.
The program follows eight CEFR (Common European Framework of Reference for Languages) levels, currently capped at B2 (no C1 or C2), and includes the “Jenny” AI assistant supporting hybrid classes. Because classes are drop-in, learners get a different teacher each session, and Open English teaches English only. It’s a fit for companies that need English up to an upper-intermediate level in Latin America, not the more advanced fluency that strategic roles often require.
EF (EF Corporate Learning)
EF is a legacy corporate language training provider, founded in 1965, with the proprietary Efekta Method and more than 70 languages available.
Over time the operation has scaled up and layered AI into its platform, adding 24-hour group classes, Hyperclass for business simulations, and an AI copilot that analyzes the learner’s speech in real time during class. It’s the option most familiar to multinationals that already have a relationship with the EF brand. All content is produced by EF itself, so there’s no option to turn your company’s internal materials into lessons.
Preply
Preply operates as a marketplace with more than 10,000 freelance tutors, giving learners the freedom to choose (and switch) teachers whenever they want, in more than 50 languages.
Because it’s a marketplace, quality and methodology vary from tutor to tutor, and there’s no company-wide standard applied across the program. It’s a fit for small teams that prioritize pure 1:1 tutoring and are comfortable giving up a centralized program.
Rosetta Stone
Rosetta Stone has more than 30 years in the market, with a method built on imagery and repetition, paired with unlimited group tutoring in 24 languages.
It’s a fit for large companies looking for broad language coverage from a familiar brand. Content isn’t built from your company’s own materials, and there’s no structured one-on-one class format with teacher choice.
Berlitz
Berlitz was founded in 1878 and is built around teacher-led classes, in person or online, using the Berlitz Method of full immersion in the target language, in more than 50 languages.
It’s a fit for small leadership groups that prioritize high-touch, in-person instruction. Proficiency assessment is sold separately, and the platform doesn’t have AI built into the learning experience the way other options on this list do.
Busuu
Busuu is used by more than 600 brands, blending self-paced microlearning with live classes and community practice, in 14 languages.
It can build role- or industry-specific content (retail, pharma, automotive, logistics), but as a paid add-on, not included by default. It’s a fit for companies with a leaner budget that are comfortable starting with self-study, with live classes as a complement.
Speexx
Speexx doesn’t sell language alone: it’s a people-development platform that combines language training with business coaching, mentoring, and intercultural programs, with AI running on its own servers, without third parties.
It offers more than 500 live classes a week, but one-on-one coaching sessions are reserved for the premium plan. It’s a fit for companies that prefer language to be one piece within a larger development package, rather than the main focus of the investment.
Slang
Slang was born out of MIT research and is strong in the Latin American market, with self-paced business English courses combined with level-grouped live classes and AI speaking practice.It teaches English only, with classes organized by level, six to eight learners in the standard format.
It’s a fit for companies that only need English and prioritize cost per seat over multilanguage coverage or measurable ROI.
Dexway
Dexway provides AI-powered e-learning content (virtual tutor, role-play, automatic speech and writing correction) from CAE, strong among educational institutions in Spain, for the institution to deliver with its own teachers, in eight languages.
Without an in-house language teaching team to run the program, Dexway alone doesn’t cover the full process.
Where Voxy fits into this comparison
Voxy pairs language learning with the development of the skills an employee’s role genuinely demands: communication, project management, AI fluency, and leadership all enter the curriculum alongside the language. Live classes are taught by certified teachers the learner chooses and keeps throughout the program, with an average of seven years of experience and coming from more than 50 countries, working alongside a proprietary, pedagogically-trained AI that personalizes the learning path and is reviewed by language-teaching specialists before it ever reaches the learner.
Content can also be built from your company’s real materials (procedures, product training, safety manuals, sales scripts), turned into lessons inside the platform. And unlike most providers on this list, proficiency assessment (the VPA, or Voxy Proficiency Assessment, mapped to CEFR, TOEFL, IELTS, TOEIC, and PTE) already comes built into every program.
Every Voxy client, from the smallest to the largest, has a dedicated Customer Success team managing the program end to end, including engagement and outcome reporting. That shows up in the numbers: 90% of Voxy learners significantly improve proficiency within three months, and Maxion Wheels, which runs the program with more than 10,000 employees across 24 factories and 12 countries, reached 83% active engagement and 71% reported productivity gains.
Among the providers on this list, Voxy is the only one that combines a fixed teacher chosen by the learner, content built from the company’s own materials, built-in proficiency assessment, and a dedicated Customer Success team, all in the same program.
Quick comparison between providers
| Provider | Best fit for |
| Voxy | Companies that want to measure ROI and build leadership and communication skills alongside the language |
| goFLUENT | Very large multinationals that need language coverage at scale |
| Open English | Latin American companies that only need English up to an upper-intermediate level, with unlimited live classes |
| EF | Multinationals that already have a relationship with the EF brand |
| Preply | Small teams that prioritize pure 1:1 tutoring over a centralized program |
| Rosetta Stone | Large companies looking for broad language coverage from a familiar brand |
| Berlitz | Small leadership groups that prioritize high-touch, in-person classes |
| Busuu | Companies with a leaner budget, in a self-study-first model with live classes as a complement |
| Speexx | Companies that want language inside a larger coaching and development package |
| Slang | Companies that only need English and prioritize cost per seat |
| Dexway | Educational institutions that already have their own teachers and just need content |
Frequently asked questions about corporate language training
What’s the best corporate language training provider in 2026?
There’s no single answer, because it depends on what the company needs most. Providers like Voxy cover, in the same program, continuity with the same teacher, content built from the company’s materials, and built-in proficiency assessment. For global language coverage at scale or lower cost per seat, goFLUENT, EF, or Slang tend to be the most common points of comparison, depending on region and budget.
What’s the difference between a corporate language provider and a personal language app?
A corporate provider is built for a company to manage learning for dozens, hundreds, or thousands of employees at once, with progress reporting, HR system integration, and, in most cases, work-related content. A personal app focuses on the individual and rarely has these management and measurement layers.
Does AI replace human teachers in corporate language training?
In most of the providers evaluated here, no. AI adds extra practice, corrects exercises, or personalizes the course pace, but real fluency gains still depend on conversation practice with a human teacher. That’s why providers like Voxy, EF, and Berlitz keep live classes at the core of the program.
How many languages does a global company typically need to offer?
It depends on the operation’s profile, but most global companies concentrate their investment in three to six core languages, usually English, Spanish, Portuguese, and one or two local languages, even when a provider’s catalog offers many more options on paper.
How do you measure the return on a corporate language training program?
The metrics that matter most to leadership go beyond the proficiency score: active engagement, meaning how many people actually use the program, and the practical effect on the job, like promotions and productivity.
In our 2026 Global Benchmark Survey, only 11% of companies said they formally calculate ROI — most still measure satisfaction or performance reviews, which are easier to track but don’t show the real effect on the business.
Providers with proficiency assessment built into the program, like Voxy with the VPA, deliver that before-and-after at no extra cost.
Finally…
What decides the choice of corporate language training provider is what your company will be able to show after six months on the program: more people promoted, smoother communication across teams, a project that didn’t stall because of language. That’s what growth and competitiveness across borders actually look like. Which of these matters most to your team right now?
Voxy offers language training designed to reflect real corporate life, with courses tailored to different industries, departments, and roles. Our content helps professionals gain confidence in real work situations—from writing clear emails to participating in global meetings. Powered by AI and microlearning, our digital solution enhances team communication and unlocks your workforce’s full potential. Schedule a demo today.
