How much a simultaneous interpreter costs (and when AI pays off)

How much does a simultaneous interpreter cost? The honest answer is: it depends. The price varies a lot by language, region, duration and type of event — and there’s almost always a minimum number of hours. In this guide we explain how billing usually works and when AI voice translation truly pays off.

How a simultaneous interpreter is usually billed

Rather than nailing down market rates (which change constantly), it helps to understand the billing logic:

• By the hour or by the day, usually with a minimum number of hours — a 30-minute meeting can be charged as half a day.
• Rare language pairs cost more, because fewer professionals are available.
• True simultaneous (real-time, no pauses) often requires two interpreters taking turns over long sessions, doubling the cost.
• There can be extra costs: travel, equipment (booth, headsets, receivers), booking and cancellation.

The upshot is that short, frequent or last-minute meetings get expensive — the minimum hours don’t match your real need.

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How much it costs to translate a meeting with AI

With Langless the model is transparent: subscription from US$ 25/month + BYOK (your own OpenAI or Gemini key), paying for the minutes directly to the AI provider from ~US$ 0.03/min, with no markup.

In practice, a ~60-minute meeting comes to ~US$ 1.80 in AI minutes, on top of the monthly subscription. There’s no minimum hours, no travel and no booking. See the plans and run the numbers with the per-minute calculator.

Billing model side by side

The difference isn’t just the price, but how each option bills. The interpreter fields are illustrative, because the real price varies a lot by language, region, duration and type of event.

Example of a Langless bill in a month

Suppose 8 one-hour meetings in a month. That’s ~480 AI minutes. At ~US$ 0.03/min, that comes to ~US$ 15 in minutes, paid directly to the provider with your key. Adding the US$ 25 subscription, the month lands around ~US$ 40 for the whole team (seats are shared — you pay for concurrent use).

Compare that to the interpreter model: by the hour or day, with minimum hours, a single long meeting can already cost more than that entire month of AI — not counting travel and booking. These are estimates: the exact price of the minutes depends on the provider and the model you choose, and interpreter fees vary widely. Run the numbers with the per-minute calculator.

When AI pays off (and when it doesn’t)

AI pays off when volume is the problem: lots of meetings, varied languages, unpredictable hours, business conversations, sales, support and interviews. The per-minute cost with no markup and 24/7 availability make the difference.

When NOT to use Langless

Be honest about the risk. In legal, diplomatic or very high-risk contexts — hearings, contracts where every word carries legal weight, sensitive negotiations of state — a human interpreter is still the right choice, for the nuance, culture and professional accountability. For those, hire a professional. For everyday business, AI handles it. See the full comparison in human interpreter or AI.