Flowmingo vs Mercer | Mettl

The short answer

Mercer | Mettl covers several different assessment jobs. Its catalog includes technical tests, live coding tools, psychometric instruments and remote examination proctoring. The value of that breadth depends on which instrument and delivery method your hiring process actually needs^[6].

Flowmingo starts with spoken evidence from the applicant. The AI asks the configured interview questions, follows up and returns a recording, transcript and criterion-based evaluation. Recruiters can add Technical Tests for executable coding work, then review the candidate’s evidence within the hiring pipeline.

2 more differences worth knowing

• Coding is available on both sides

  Mettl offers coding assessments and live coding interviews. Flowmingo offers Technical Tests with executable questions. Compare the actual task, runtime and review evidence instead of using a coding checkbox^[2,3].

  See the detail

• The assessment instrument matters

  A psychometric test has a different purpose from an AI interview scored against job requirements. Ask for evidence supporting the particular instrument and use case^[4].

  See the detail

Pricing: what each one costs you

Request a quote for the exact battery and delivery conditions.

Mettl’s public pricing asks buyers to choose products and request personalized pricing. A price taken from an unrelated test package cannot establish the cost of a complete hiring workflow^[1].

What	Mettl
Published employer price	Custom quote[1]	Free $0; Starter US$49/month; Growth US$99/month. AI interviews stay unlimited
Purchase scope	Selected assessment products and customization[1]	Unlimited AI interviews on Free; paid options separately
Trial	Free-trial invitation on coding product page; confirm scope[2]	Ongoing Free AI interviewing
Live coding	Include live-interview tool requirements[3]	Technical Tests assessed separately from spoken interview
Proctoring	Specify AI, human or secure-browser configuration[5]	Review requirements for the selected Flowmingo assessment
Report and video access	Include retention, sharing and exports in the quote	Standard links on Free; paid downloads and longer retention

Build one comparable hiring path. Suppose applicants complete a first interview, a coding exercise and a later technical discussion. List which product serves each stage, how many applicants reach it and what evidence returns. Request a quote for that sequence rather than comparing a single test price with a complete interviewing process.

For a supervised assessment, also specify who supplies the proctor, what happens when a session is interrupted and whether an additional attempt is chargeable. For a psychometric battery, include any interpretation or implementation support the team needs. Those are meaningful parts of the purchase even when they are not shown as a separate button on the product page.

Flowmingo’s interview volume is unlimited, but storage and exports have plan rules. Free retains the latest 300 videos for 30 days and keeps results, scores and transcripts. A team that needs downloadable files or longer video access should include a paid plan. Do not turn that retention limit into an interview-volume limit.

Flowmingo's plans: Free is $0 with unlimited AI interviews. Starter ($49 a month) and Growth ($99 a month) add your brand on what you share, downloads, longer assessments and longer-kept interview videos. See pricing.

The assessment: spoken evidence, executable work or a live technical discussion

Mettl’s coding products distinguish automated tests from a live environment in which an interviewer watches the candidate work. Flowmingo’s AI interview and Technical Tests also serve different assessment purposes^[2,3].

What	Mettl
Spoken first interview	Confirm the exact interview product and whether a person attends	The AI asks aloud and follows up; the applicant records video answers in their own time
Coding evaluation	Prebuilt test cases and automated grading[2]	Executable coding questions and sandbox verification in Technical Tests
Live technical round	Pair programming, whiteboard and notepad[3]	Evaluate the team’s later technical discussion separately
Question preparation	Library and role-specific assessment options[2]	1-30 questions drafted from the job description; edit the questions and criteria before inviting
Evidence interpretation	Review the scoring method for the selected instrument	0-10 per criterion with a written reason; overall score uses the importance you set
Interview duration	Depends on the purchased assessment and round	Set the whole interview up to 60 minutes, depending on your plan

Choose a task that reflects the role. For a backend engineer, a small debugging exercise may reveal more relevant evidence than an unrelated algorithm puzzle. Examine which constraints the candidate must handle, how the test cases distinguish a partial solution and whether the report preserves their approach. A larger question library does not guarantee that the selected question is appropriate.

For a role where judgment and communication matter, use the interview to ask how the applicant handled a real situation and why they chose that action. Use a coding or knowledge test for evidence that needs execution or a defined answer. Combining the methods can be useful; averaging unrelated scores without a clear interpretation is not.

What your applicants experience

The candidate’s preparation depends on the selected assessment. A short browser interview and a supervised coding examination should not arrive under the same vague invitation.

Test the complete candidate setup before a hiring campaign. Check the device requirements, permissions, allowed resources and support path. If a browser restriction blocks an accessibility tool or a legitimate work environment, the team needs a clear alternative. A failed setup should not silently become a low ability score. Keep spoken interview language, interface translation and programming language as separate requirements.

What	Mettl
Interview entry	Explain whether the activity is a test or scheduled live round	Invitation to an asynchronous AI interview
Delivery	Confirm channels for the purchased assessment	Email invitations and reminders; eligible paid WhatsApp invitations with credits
Device controls	Secure Browser supports Windows and Mac; configuration matters[5]	A phone or laptop browser, with a camera and microphone check before the interview
Monitoring	AI, human and record-and-review options described[5]	Explain the monitoring relevant to the selected assessment
Language	Confirm the specific test language and validation population	60+ spoken interview languages; applicants choose from the languages you allow

60+ interview languages

What comes back after each interview

The report must explain the evidence produced by the chosen method. Mettl’s coding tools describe test-based evaluation and code playback, while Flowmingo’s interview report links the role’s requirements to spoken evidence^[2,3].

What	Mettl
Coding report	Automated test results and technical analytics[2]	Technical Test results alongside other candidate assessments
Live coding review	Code playback and earlier screening data[3]	Keep the relevant technical evidence with the hiring decision
Spoken interview	Confirm recording and transcript for the selected module	Video recording and transcript, with the answer available alongside its evaluation
Criterion evaluation	Instrument-specific scoring; inspect the sample report	0-10 per criterion with a written reason; overall score uses the importance you set
Human decision	Reviewer interprets the selected assessment	Recruiters review the evidence and decide who moves forward

Overall score

Ask reviewers to explain a borderline result. A candidate may solve the main coding problem but miss an edge case, or give a strong example without addressing one requirement. A useful report makes that distinction visible. For psychometric output, ask what the scale measures, which comparison group applies and what inference the assessment provider considers appropriate. Do not treat a percentile from one instrument as equivalent to an interview rating.

Integrations and workflow

What	Mettl
Assessment catalog	Hiring, development and examination products[6]	AI interviewing, Technical Tests and supporting hiring assessments
Hiring record	Confirm candidate-record and ATS handoff for the selected products	Built-in hiring stages, applicant records, notes and team ratings on every plan
Developer connection	Specify the required integration and result events	REST API, webhooks and MCP for custom integrations on every plan
Team access	Confirm administrator, interviewer and reviewer permissions	Unlimited team members, with Owner, Admin and Member roles
Branded sharing	Confirm product and contract-specific presentation options	Paid report branding and career-page customization

A broad suite still needs a clear handoff. Identify which system invites the applicant, which holds the results and which records the final decision. Confirm that the report belongs to the correct person and role, and that a reviewer can access only the evidence they need. A successful test launch does not prove that downstream ATS updates or access removal work.

Scoring, oversight and candidate data

Check evidence for the instrument and the monitoring configuration

Mettl describes assessments developed by psychologists, psychometricians and data scientists, as well as AI and human proctoring. Evaluate those claims for the exact product and intended candidate population^[4,5].

Match the claim to the evidence. A security certification concerns a defined control scope; it does not establish that a hiring score predicts performance. A proctoring flag identifies an event to review; it is not automatically proof of misconduct. A psychometric instrument needs an interpretation appropriate to its validation, language and population. Keep each of those questions separate during procurement.

What	Mettl
Psychometric basis	Request the selected instrument’s validity and reliability evidence[4]	AI interview rates the job requirements supplied by the team
Proctoring	AI flags, human invigilation and secure-browser options[5]	Inspect relevant assessment evidence before drawing conclusions
Security documentation	Published standards; request current evidence and scope[1]	Request current certification evidence. A published DPA is a data contract, not a certification
Data terms	Confirm hosting, retention and deletion for the contract	Published Data Processing Agreement and Privacy Policy; confirm retention and deletion requirements

Which should you choose?

Moving from Mettl: test one role first

Evaluate one hiring stage before replacing an assessment program.

1. Define the evidence neededSeparate spoken examples, executed work, psychometric measures and live technical discussion.
2. Select the actual productRequest the relevant Mettl module or configure Flowmingo’s interview and Technical Test.
3. Review a borderline candidateInspect the source evidence and the meaning of the score, not only the ranking.
4. Verify the complete processTest candidate setup, reviewer access, result transfer, retention and total contracted scope.

The full comparison, point by point

For the procurement checklist: all 31 points, with a source on each. Open a group.

Price and plan limits6 points

What	Mettl
Published employer price	Custom quote[1]	Free $0; Starter US$49/month; Growth US$99/month. AI interviews stay unlimited
Purchase scope	Selected assessment products and customization[1]	Unlimited AI interviews on Free; paid options separately
Trial	Free-trial invitation on coding product page; confirm scope[2]	Ongoing Free AI interviewing
Live coding	Include live-interview tool requirements[3]	Technical Tests assessed separately from spoken interview
Proctoring	Specify AI, human or secure-browser configuration[5]	Review requirements for the selected Flowmingo assessment
Report and video access	Include retention, sharing and exports in the quote	Standard links on Free; paid downloads and longer retention

The interview6 points

What	Mettl
Spoken first interview	Confirm the exact interview product and whether a person attends	The AI asks aloud and follows up; the applicant records video answers in their own time
Coding evaluation	Prebuilt test cases and automated grading[2]	Executable coding questions and sandbox verification in Technical Tests
Live technical round	Pair programming, whiteboard and notepad[3]	Evaluate the team’s later technical discussion separately
Question preparation	Library and role-specific assessment options[2]	1-30 questions drafted from the job description; edit the questions and criteria before inviting
Evidence interpretation	Review the scoring method for the selected instrument	0-10 per criterion with a written reason; overall score uses the importance you set
Interview duration	Depends on the purchased assessment and round	Set the whole interview up to 60 minutes, depending on your plan

Candidate experience5 points

What	Mettl
Interview entry	Explain whether the activity is a test or scheduled live round	Invitation to an asynchronous AI interview
Delivery	Confirm channels for the purchased assessment	Email invitations and reminders; eligible paid WhatsApp invitations with credits
Device controls	Secure Browser supports Windows and Mac; configuration matters[5]	A phone or laptop browser, with a camera and microphone check before the interview
Monitoring	AI, human and record-and-review options described[5]	Explain the monitoring relevant to the selected assessment
Language	Confirm the specific test language and validation population	60+ spoken interview languages; applicants choose from the languages you allow

Reports and evaluation5 points

What	Mettl
Coding report	Automated test results and technical analytics[2]	Technical Test results alongside other candidate assessments
Live coding review	Code playback and earlier screening data[3]	Keep the relevant technical evidence with the hiring decision
Spoken interview	Confirm recording and transcript for the selected module	Video recording and transcript, with the answer available alongside its evaluation
Criterion evaluation	Instrument-specific scoring; inspect the sample report	0-10 per criterion with a written reason; overall score uses the importance you set
Human decision	Reviewer interprets the selected assessment	Recruiters review the evidence and decide who moves forward

Integrations and team5 points

What	Mettl
Assessment catalog	Hiring, development and examination products[6]	AI interviewing, Technical Tests and supporting hiring assessments
Hiring record	Confirm candidate-record and ATS handoff for the selected products	Built-in hiring stages, applicant records, notes and team ratings on every plan
Developer connection	Specify the required integration and result events	REST API, webhooks and MCP for custom integrations on every plan
Team access	Confirm administrator, interviewer and reviewer permissions	Unlimited team members, with Owner, Admin and Member roles
Branded sharing	Confirm product and contract-specific presentation options	Paid report branding and career-page customization

Oversight and candidate data4 points

What	Mettl
Psychometric basis	Request the selected instrument’s validity and reliability evidence[4]	AI interview rates the job requirements supplied by the team
Proctoring	AI flags, human invigilation and secure-browser options[5]	Inspect relevant assessment evidence before drawing conclusions
Security documentation	Published standards; request current evidence and scope[1]	Request current certification evidence. A published DPA is a data contract, not a certification
Data terms	Confirm hosting, retention and deletion for the contract	Published Data Processing Agreement and Privacy Policy; confirm retention and deletion requirements

Questions buyers ask

Sources and method

This comparison was updated on 4 Oct 2026. Competitor claims link to Mettl's own pages or a named third party; ratings carry their own checked dates. Flowmingo facts come from our pricing, the AI Interviewer page, a sample report, our Data Processing Agreement and our Privacy Policy. Spotted something out of date? Tell us below and we fix it.