Lokalise vs Phrase vs Smartling: Real AI Localization Cost per Language
Short answer
All three vendors went through real pricing restructuring recently, so any comparison older than mid-2026 is likely describing plans that no longer exist. Lokalise now publishes three clear self-serve tiers ($144–999/month) with unlimited seats and unlimited hosted words, billing instead on processed words. Phrase quietly narrowed its self-serve options to two plans at the edges (a $27/month single-seat option and a $525/month option) and pushed everything in between behind a sales conversation. Smartling isn't fully quote-only the way it's sometimes described — it publishes real starting per-word rates for translation services — but its platform subscription fee itself remains a custom quote, and Vendr's own transaction data shows Smartling contracts running 2–3x higher than Lokalise for comparable volume.
Pricing at a glance
| Lokalise | Phrase | Smartling | |
|---|---|---|---|
| Entry self-serve tier | Explorer — $144/month | Freelancer — $27/month (single seat) | Core (free-to-start) |
| Mid tier | Growth — $375/month | Developer — $525/month | Not published — sales conversation |
| High self-serve tier | Advanced — $999/month | Not self-serve — requires sales | Not published — sales conversation |
| Enterprise | Custom-quoted | Custom-quoted | Custom-quoted |
| Billing unit | Processed source words (not stored/hosted words), plus metered "advanced" seats for managers/developers | Processed words (as of the 2025–2026 restructure, moved away from seats/hosted keys) | Per-word translation-service rates, plus a separate, quote-based platform fee |
| Seats | Unlimited translator/reviewer seats on all paid plans; hosted words unlimited on all paid plans | Not itemized in currently available public pricing | Not itemized in currently available public pricing |
| Published translation-service rates | Not separately itemized — bundled into the processed-word plan price | Not separately itemized | Machine Translation from $0.0075/word; AI Translation from $0.06/word; AI Human Translation from $0.12/word; Human Translation from $0.20/word |
What headline pricing excludes
Both Lokalise and Phrase restructured their billing model in the same general direction during 2025–2026: from seats-and-hosted-keys to processed words. This is a meaningful shift for any team with high machine-translation volume — a workflow that re-translates or re-processes content frequently now meters against usage in a way it didn't under the old seat-based plans. A company evaluating either vendor based on an old seat-count budget should re-model its actual word-processing volume instead.
Phrase's self-serve pricing now has a real gap in the middle. The old Start ($120/mo), Essential ($230/mo), and Pro ($825/mo) tiers are gone. What's left publicly is a $27/month single-seat Freelancer plan and a $525/month Developer plan — a team that outgrows the $27 tier but doesn't fit the enterprise sales motion has no self-serve middle option anymore, and has to enter a sales conversation to find out what sits between $525/month and full Enterprise.
Smartling's published per-word rates are for translation services specifically — not the platform subscription itself. A company budgeting only the $0.0075–$0.20/word range and assuming that's the whole bill will be surprised by a separate, quote-based platform fee that Smartling doesn't publish anywhere.
Hidden costs
- Lokalise caps API usage at 6 requests per second across every plan, including the top self-serve Advanced tier — a heavily automated CI/CD localization pipeline should confirm this doesn't bottleneck a high-frequency deployment workflow before committing.
- Lokalise distinguishes "basic" and "advanced" seats — translator and reviewer seats are unlimited and free on paid plans, but seats for people doing more than translation (managers, developers, content creators) are limited per tier and cost extra beyond that.
- Neither Lokalise's nor Phrase's publicly available pricing states the exact processed-word allowance included in each named tier — the $144/$375/$999 figures for Lokalise and the $27/$525 figures for Phrase are the plan prices, but how many processed words each plan actually includes before triggering an overage or an upgrade prompt isn't confirmed anywhere in public materials for this article. Treat the scenarios below accordingly.
Worked scenarios
Because exact processed-word allowances per named tier aren't published for Lokalise or Phrase, the scenarios below use the published plan-level list prices as the primary comparison point, with word volumes stated as explicit scenario assumptions rather than vendor-confirmed allowances.
Startup localizing into 3 languages
Assumption: roughly 50,000 words of source content per language, translated primarily via AI/machine translation with light human review — 150,000 total processed words/month across all three languages.
| Estimated monthly cost | |
|---|---|
| Lokalise Explorer | $144/month flat (assuming this volume fits within Explorer's unstated word allowance) |
| Phrase Freelancer | $27/month (single-seat; likely insufficient once more than one person needs access) |
| Smartling (translation services only, AI Translation tier) | 150,000 × $0.06 = $9,000 — plus an unpublished platform fee on top |
At this scale, Smartling's per-word translation-service cost alone dwarfs Lokalise's or Phrase's flat plan price — Smartling's pricing model is built around translation-service volume and managed workflows, not a flat software subscription, which makes it a structurally different (and likely more expensive) choice for a startup with modest word volume.
SaaS product localizing into 10 languages
Assumption: roughly 100,000 words of source content per language, translated via a mix of AI and human review — 1,000,000 total processed words/month.
| Estimated monthly cost | |
|---|---|
| Lokalise Growth | $375/month flat (assuming this volume fits within Growth's unstated word allowance; may require Advanced if not) |
| Phrase | Likely requires a sales conversation at this scale — no confirmed self-serve tier covers this cleanly |
| Smartling (AI Human Translation tier, a more realistic quality bar for customer-facing SaaS content) | 1,000,000 × $0.12 = $120,000 — plus an unpublished platform fee |
Enterprise localizing into 25 languages
Assumption: roughly 200,000 words of source content per language — 5,000,000 total processed words/month.
| Estimated monthly cost | |
|---|---|
| Lokalise | Almost certainly requires Enterprise (custom-quoted) at this scale — Advanced's $999/month price point is a self-serve ceiling, not necessarily sufficient volume |
| Phrase | Enterprise, custom-quoted |
| Smartling (Human Translation tier, appropriate for many enterprise/regulated content types) | 5,000,000 × $0.20 = $1,000,000 — plus an unpublished platform fee |
At enterprise scale, all three vendors converge on custom-quoted pricing, and Smartling's own per-word rate for full human translation makes clear that translation-service cost, not platform software cost, dominates the total bill at this volume — the platform fee, whatever it turns out to be, is very likely the smaller of the two numbers.
Normalizing across billing units
Cost per language is difficult to state cleanly for Lokalise and Phrase, because their pricing is volume-based (processed words) rather than per-language — adding an 11th language with modest content costs very little if it doesn't push total word volume into the next tier, and a lot if it does. Cost per 100,000 translated words is the more natural unit for Smartling, given its published per-word rates, but remains only the translation-service portion of Smartling's bill, not the full platform cost.
Break-even and crossover
The clearest structural crossover in this article isn't between specific dollar figures — it's between pricing philosophies. Lokalise and Phrase price the software platform with translation execution largely bundled in (at least for AI/machine translation); Smartling separates the two, pricing translation-service volume explicitly and the platform separately. A team doing high-volume, mostly-automated translation is likely to find Lokalise's or Phrase's bundled-word pricing cheaper; a team needing extensive human and AI-human hybrid translation at scale may find Smartling's transparent per-word rates easier to forecast, even if the total is larger, precisely because the translation-service cost is stated rather than hidden inside a platform tier.
Who pays more, and when
- A startup or small team with light localization needs is almost certainly better served by Lokalise's or Phrase's flat, lower-tier plans than by Smartling's per-word translation-service model, which is priced for volume Smartling itself doesn't expect a startup to have.
- A team that specifically needs Smartling's managed translation-service workflows and human-in-the-loop quality control should expect to pay a real premium over Lokalise or Phrase — Vendr's own transaction data puts this at roughly 2–3x for comparable volume — and should budget for both the per-word service rate and a separate platform fee.
- A team choosing between Lokalise and Phrase specifically is choosing between two vendors that both moved to processed-word billing recently; the deciding factor is more likely to be workflow fit (Lokalise's developer-first CI/CD integrations vs. Phrase's broader enterprise workflow features) than a clean price difference, since neither vendor's exact word allowances per tier are confirmed here.
Limitations and uncertainty
Lokalise's and Phrase's exact processed-word allowance per named tier is not stated in any publicly available source found for this article — the plan prices above are confirmed, but the volume each plan actually covers before requiring an upgrade is not, and the worked scenarios' cost estimates for these two vendors should be treated as directional rather than precise. Phrase's pricing between its $27/month Freelancer plan and its $525/month Developer plan is not publicly itemized at all — anything a team needs in that gap requires a direct sales conversation. Smartling's platform subscription fee is entirely custom-quoted; only its translation-service per-word rates are public, and the worked scenarios above price only that component, explicitly excluding the unknown platform fee.
Official sources
- lokalise.com/pricing, docs.lokalise.com (Lokalise Help Center pricing documentation)
- phrase.com (current public pricing pages)
- smartling.com/pricing