Multilingual AI red teaming

Adversarial human evaluation of model behaviour: native speakers write and run attack prompts in each target language, then rate what comes back against the safety policy — harmful output, bias, refusal failures, and the culturally specific attacks an English-only test never produces.

Safety-review delivery records show reviewers trained on the risk taxonomy language by language, category boundaries rewritten from recurring edge cases rather than assumed, and native judgment applied to cultural context automated filters pass over.

Adversarial board What an AI red-teaming engagement has to settle before the first probe is written.

The hard part of red teaming is not thinking of attacks. It is agreeing, in advance and in every language, what counts as a failure — so a finding is something a team can fix rather than something it can argue with.

01 The policy and its categories

The safety or content policy the model is being tested against, broken into categories, each pinned to worked examples of what does and does not breach it. Without that, severity is a matter of opinion.

02 Behaviour, not infrastructure

This is testing what the model can be persuaded to say. Probing the systems, APIs and access control around it is security work with different staffing and different evidence, and it is scoped separately or elsewhere.

03 Which languages, and why those

Guardrails are usually trained on data that is overwhelmingly English, so refusals hold unevenly elsewhere. The language list is chosen from where the model is exposed, not from where testing is easiest.

04 Handling the material and the reviewers

Attack prompts and harmful output are sensitive in both directions. Access rules, retention and reviewer rotation on distressing material are agreed before testing rather than improvised during it.

Categories fixed on worked examplesProbes written in the target languageFindings tied to the policy they breach

What is AI red teaming?

AI red teaming is deliberately adversarial testing of an AI system: rather than confirming it behaves as intended, testers try to make it fail and record what got through. The term covers two jobs needing different people. One targets the systems around a model, meaning infrastructure, APIs and access control, and is security engineering. The other targets the behaviour of the model itself, through direct requests, indirect instructions, role-play framings, and prompt injection. Behavioural red teaming is largely a language problem: guardrails are typically trained on overwhelmingly English data, so a refusal that holds in English can be weak or absent in a low-resource language answering the same request. MoniSa works on the behavioural side and does not perform penetration testing, infrastructure assessment or exploit development. It supplies native speakers who write and run attack prompts in each confirmed target language, and operates under ISO 9001 and ISO 27001 certification. Standard scope: ISO 9001:2015 — Quality management systems — Requirements (2015 edition); ISO/IEC 27001:2022 — Information security management systems (2022).

When to use it

When a model has been safety-tested in English and nobody has tried to break it in the other languages it answers in.

Testing model responses and documenting failures

Reviewers use worked examples to agree what counts as harmful, acceptable or unclear before testing. This gives the team a defined basis for assessing borderline responses.

A red-team finding is worth having only when someone can tell it apart.
A content-safety review queue with every item carrying a state — pending review, flagged, approved, escalated, in progress, archived — so a judgement on a model response leaves a record instead of a verdict.
  1. 01

    Defining risk categories with examples

    Before testing, each policy risk category is linked to examples of what does and does not breach it in each language. Reviewers examine the cultural context where category boundaries can lead to disagreement.

  2. 02

    Writing tests in the target language

    Native speakers write test prompts in the target language, accounting for its idiom, script, language mixing and taboo. Translating English attacks alone can miss these language-specific failures.

  3. 03

    Clarifying recurring borderline cases

    Recurring disagreements are grouped and resolved by a senior reviewer. The decisions become clearer category examples for the next round of testing.

  • Risk categories defined before testing
  • Test prompts written in the target language
  • Borderline cases used to clarify the categories

Project requirements and deliverables

What we need from you, how the work is reviewed, and what you receive.

Typical inputsThe safety or content policy and its risk categories, the target languages and dialects, how the model is reached for testing, worked examples of what counts as a failure in each category, any attack taxonomy already in use, the reporting format expected, and the handling rules for the material produced
Review pathRisk-taxonomy training per language, category boundaries fixed on worked examples, independent reviewers, edge cases escalated and folded back into the taxonomy, senior adjudication on disputed findings, reviewer wellbeing and rotation on harmful material, NDA-bound reviewers inside access-controlled handling
Strongest fitAI red teaming and adversarial evaluation, multilingual safety and harmful-content testing, jailbreak and refusal-failure probing, bias and stereotype testing, guardrail and policy datasets, trust-and-safety review in languages a moderation stack cannot read
How the work runsTaxonomy and failure definitions agreed on worked examples, a probe set run and reviewed before volume, then rounds of adversarial testing with findings categorised and returned against the policy they breach

Quality starts before the first batch moves

MoniSa uses a three-layer system: pre-production gates, in-production controls, and post-delivery review.

Screen

Profile review, nativity verification, domain questionnaire, screening call, sample task.

Calibrate

Every assigned team works against the same calibration items before production volume starts.

Pilot

The first batch is reviewed deeply so instruction drift is caught before scale.

Review

Sampling, senior review, agreement checks, and same-day feedback loops run during production.

Escalate

Critical errors trigger pause, recalibration, replacement, or operations-lead escalation.

Learn

Client feedback feeds back into resource profiles, glossary rules, and the next batch.

Proof that matches AI red teaming services, not generic language work

Explore the project records for scope, review method and delivered results.

Discuss a similar project

Start a project

Adversarial testing rarely arrives on its own

Red teaming finds the failures. Scoring what the model produces the rest of the time, and building the datasets that repair a guardrail, are separate pieces of work. Use the routes below to scope them.

LLM evaluation services

Use this when the job is to score output against a rubric rather than to break the model.

DataOps platform

See the workspace review queues, escalation states, and reviewer permissions are run in.

Company-wide language coverage

Availability and specialist fit are confirmed for each project.

110,000+ native linguists and AI data contributors Founder-reported combined network · 4 Oct 2026
300+ languages across active service lines
4,500+ dialects and regional variants
1,000+ organizations served since 2015

AI Red Teaming questions

Which AI is best for red teaming?

A named answer would be out of date within a quarter, and the framing hides the choice that matters: automated adversarial tooling and human red teaming find different failures, and neither substitutes for the other. Automated probing runs a known attack library at volume, repeats cheaply for regression, and is the right way to check that a fix stayed fixed. It is bounded by what is already in the library — which means it is weakest on the attacks nobody has written down yet, and weakest of all outside English, where public attack sets are thin to non-existent. Human red teaming is what produces novel attacks, culturally specific ones, and the borderline outputs where a judgement call is the whole finding. If you are choosing tooling, judge it on how much of its attack library exists in the languages you actually ship in, whether it lets you add your own probes, and how findings are categorised against your policy rather than a generic one. MoniSa supplies the human layer: native speakers writing and running attack prompts in the target language and rating what comes back.

What is AI red teaming?

AI red teaming is deliberately adversarial testing of an AI system: instead of checking that it works as intended, testers try to make it fail, and record what got through. For a language model that means attempting to elicit harmful, biased, false or policy-breaking output — through direct requests, indirect and layered instructions, role-play framings, prompt injection, and the ordinary manipulations a determined user reaches for. The output is a categorised set of findings tied to the policy each one breaches, which is what makes it useful for fixing guardrails rather than merely alarming. The term is borrowed from security, where a red team simulates an attacker, and the discipline now covers two fairly different jobs under one name: probing the infrastructure and software around a model, and probing the behaviour of the model itself.

Is AI red teaming the same as penetration testing?

No, and the distinction decides who you should be talking to. Penetration testing targets systems: infrastructure, APIs, access control, the software around the model, and it is done by security engineers. Red teaming a model targets behaviour: what the model can be persuaded to say, to whom, in what language, and how far a guardrail can be talked around. The two share a mindset and almost nothing else in method, staffing or evidence. MoniSa works on the behavioural side only. It does not perform penetration testing, infrastructure assessment or exploit development, and does not present itself as a security firm. What it supplies is the part of behavioural red teaming that is a language problem: native speakers who can construct a plausible attack in their own language and judge whether the response that came back is genuinely harmful in that culture.

Why does AI red teaming have to be run separately in each language?

Because most of what makes an attack work is language-specific, and most published safety testing is not. An attack translated out of English carries English assumptions about idiom, indirection, politeness and taboo, and drops the ones the target language actually has — code-switching between scripts, transliteration that slips past a filter, dialect-specific slurs, religious or regional sensitivities with no English equivalent, and phrasing that reads as harmless in one country and as incitement in another. Safety behaviour is uneven for a structural reason too: guardrails are usually trained on data that is overwhelmingly English, so a refusal that holds firmly in English can be weak or absent in a low-resource language answering the same request. Testing that language separately, with a native speaker writing the probes, is the only way to find out which.

What does MoniSa need before quoting an AI red teaming project?

The safety or content policy and its risk categories, with worked examples of what counts as a breach in each; the target languages and dialects; how testers will reach the model; whether an attack taxonomy is already in use or has to be built; the volume and the number of rounds; the format findings should come back in; the handling and retention rules for the material produced; and the date. Say early if the categories are not yet defined against examples — agreeing them is the first piece of work and is what separates findings a team can act on from a disagreement about severity. Rare pairs are confirmed against actual reviewer availability before a date is agreed.

Send the policy, and say what counts as a breach

A useful first brief for AI red teaming names the safety policy and its risk categories, the languages in scope, how testers reach the model, and the handling rules for the material the testing produces.

Send a brief

Required. We use these details to respond to your request. We don't sell your data. Privacy policy.

Describe the project without confidential content or personal data. We will agree a secure transfer method if samples are needed.