How many translation vendors should I evaluate?

Evaluate 3-5 vendors for a meaningful comparison. Fewer than 3 gives insufficient data points; more than 5 creates evaluation fatigue without proportional insight. Include at least one traditional LSP, one technology-forward vendor, and one specialized in your industry vertical.

What is a fair per-word translation rate?

Rates vary significantly by language pair, content type, and quality level. Professional human translation: $0.10-0.30/word. MTPE (light): $0.04-0.08/word. MTPE (full): $0.06-0.12/word. AI-powered with quality assurance: $0.01-0.05/word. Always compare TCO, not just per-word rates.

Should I require ISO 17100 certification?

ISO 17100 is valuable as a process baseline — it ensures the vendor has qualified translators and a revision workflow. However, it doesn't guarantee output quality. Complement ISO 17100 requirements with MQM-based quality measurement on actual deliverables. Process certification plus output measurement gives the most complete quality picture.

How do I test translation quality before committing?

Request a paid pilot project using your actual content — not vendor-selected samples. Provide 2,000-5,000 words of representative content across your key content types. Evaluate the output using MQM annotation by an independent reviewer (not the vendor). Compare scores across vendors using the same evaluation criteria.

What red flags should I watch for?

Major red flags: no structured quality framework, inability to share historical quality data, pricing that seems too good to be true (usually means corners are cut), no NDA or data protection policy, reluctance to do a paid pilot, claiming 100% accuracy (no translation achieves perfection), and no clear revision/escalation process.

Guides

Enterprise Translation Buyer's Checklist: 15 Criteria for Vendor Evaluation

A comprehensive checklist of 15 evaluation criteria for enterprise translation buyers, covering quality, technology, compliance, and total cost of ownership.

TL;DR — Key Takeaways

1.Choosing translation capacity is really choosing where your standards, reviewer time, and sign-off history will live.
2.Evaluate any vendor or platform across four questions: who controls approved language, who carries review accountability, how security and compliance are handled, and what the operating cost becomes after revisions and handoffs.
3.Ask suppliers to run your real files, not showcase samples, and show exactly where reviewers would focus, how terminology is enforced, and how sign-off is documented.
4.The cheapest per-word rate rarely wins in the end. Recurring coordination, rework, and lost internal knowledge usually cost more than the initial quote.

Quality Assurance Criteria (1-5)

1. Review discipline: Can the vendor show a repeatable way to decide whether a file is safe to release? Ask how they classify issues, who resolves them, and what blocks approval. If they cannot explain that clearly, your team will end up carrying the uncertainty later.

2. Proof over promises: Ask for real examples of what was flagged, what changed, and how a file eventually cleared review. Historical scores can help, but what matters more is whether the vendor can show a visible trail from issue detection to approval.

3. Revision and Escalation Process: What happens when quality falls below threshold? Ask for their revision workflow, turnaround time for corrections, and escalation procedures. A robust vendor has clear SLAs for revision cycles and doesn't charge extra for fixing their own errors.

4. Translator Qualification: How do they vet and qualify translators? Look for subject matter expertise verification, quality-based translator ranking systems, and ongoing performance evaluation. The best vendors maintain domain-specialized translator pools.

5. Reference Material Handling: How do they manage termbases, translation memories, and style guides? Your domain-specific terminology and brand voice should be consistently applied. Ask about their terminology management workflow and how reference materials are updated.

Technology and Integration Criteria (6-10)

6. File Format Support: Can the vendor handle your actual file formats — XLIFF 2.0, TMX, HTML, XML, InDesign, PDF, Markdown? Ask specifically about formats you use. Vendors who require you to convert to plain text or DOCX are adding unnecessary overhead to your workflow.

7. CAT Tool and TMS Integration: Does the vendor integrate with your translation management system (TMS) or content management system (CMS)? API-based integration reduces manual file handling and speeds up delivery. Ask about REST API availability, webhook notifications, and batch processing capabilities.

8. Terminology Management: How does the vendor enforce term consistency? Look for automated terminology checking, glossary management capabilities, and the ability to import/export industry-standard TBX files. Inconsistent terminology across a large content set erodes reader trust.

9. Translation Memory Leverage: Does the vendor use translation memory (TM) effectively? Ask about TM match thresholds, how fuzzy matches are handled, and whether you retain ownership of the TM. Good TM leverage reduces cost and improves consistency for repetitive content.

10. Scalability and Turnaround: Can the vendor scale to handle volume spikes? Ask about their capacity for surge demand, typical turnaround times by volume tier, and how they maintain quality at scale. A vendor that delivers fast but drops quality under pressure isn't truly scalable.

Compliance and Economics Criteria (11-15)

11. Data Security and Privacy: How does the vendor handle your data? Ask about encryption (at rest and in transit), data retention policies, GDPR/CCPA compliance, and whether your content is used for training MT models. For sensitive content, verify SOC 2 compliance or equivalent certification.

12. NDA and Confidentiality: Does the vendor provide comprehensive NDA coverage? This should extend to all subcontractors, freelance translators, and technology partners who may access your content. Ask specifically about sub-processor agreements.

13. Industry Certifications: Does the vendor hold relevant certifications? ISO 17100 (translation services), ISO 27001 (information security), and ISO 9001 (quality management) are the most relevant. Certifications demonstrate commitment to systematic processes, though they don't guarantee output quality.

14. Pricing Transparency: Is pricing clear and predictable? Ask for a complete price breakdown including: per-word rates by language pair, minimum charges, rush fees, project management fees, technology fees, and revision charges. Hidden fees are a red flag — they indicate a vendor that profits from your confusion.

15. Total Cost of Ownership: What's the real cost beyond per-word pricing? Calculate TCO including: revision cycles (how many rounds before acceptable quality?), internal review time, project management overhead, technology integration costs, and the cost of quality failures (customer complaints, legal exposure, brand damage). The cheapest per-word rate often has the highest TCO.

Frequently Asked Questions

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