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Best AI for…

Best AI for translation and languages

Translating text and learning a language.

Best overallToo close to call

1st and 2nd of 14 models for this task

Best for $25 a month or less

Claude Opus 5.5

Get it with Claude Pro, $20 a month

Top of 14 models for this task

Best freeToo close to call

4th and 5th of 14 models for this task

Based only on people's votes. The picks follow a fixed rule using the charts below and each app's plans.

Already paying for one? See what each plan gives you here
App and planPriceBest model on it for thisPosition
ChatGPT FreefreeGPT-5.6 Luna13th of 14
ChatGPT Go$8 a monthGPT-5.6 Luna13th of 14
ChatGPT Plus$20 a monthGPT-5.6 Sol8th of 14
ChatGPT Pro$100 a monthGPT-6 Astra
Called GPT-6 Pro in the app
9th of 14
Claude FreefreeClaude Sonnet 511th of 14
Claude Pro$20 a monthClaude Opus 5.51st of 14
Claude Max$100 a monthClaude Opus 5.51st of 14
Gemini FreefreeGemini 3.1 Pro
Limited use
4th of 14
Google AI Plus$4.99 a monthGemini 3.1 Pro
Twice the free plan's use
4th of 14
Google AI Pro$19.99 a monthGemini 3.8 Flash3rd of 14
Google AI Ultra$99.99 a monthGemini 3.8 Flash3rd of 14
Kimi FreefreeKimi K36th of 14
Kimi Moderato$19 a monthKimi K36th of 14

Norm's guide

What I'd tell a friend who asked.

What AI is good at

  • Everyday translation of emails and documents.
  • Explaining grammar and phrases.
  • Practising conversation.

Where it trips up

  • Idioms and local expressions.
  • Less common languages.
  • Formal or legal documents where the exact wording matters.

How to get a good result

  • Tell it who the translation is for and how formal it should be.
  • Ask a native speaker to check anything important.
  • When learning, ask it to correct you gently as you go.

How the models compare

Every model we could score for translation and languages, combining the tests below.

Overall for translation and languages

Position on a combined score from 1 test. The longer the bar, the further ahead · Higher is better

On the tests we have, Claude Opus 5.5 comes out on top, followed by Claude Fable 5.1 and Gemini 3.8 Flash.

Claude Opus 5.5 · Anthropic1st
Claude Fable 5.1 · Anthropic2nd
Gemini 3.8 Flash · Google DeepMind3rd
Gemini 3.1 Pro · Google DeepMind4th
Gemini 3.6 Flash · Google DeepMind5th
Kimi K3 · Moonshot AI6th
DeepSeek V4.1 Flash · DeepSeek7th
GPT-5.6 Sol · OpenAI8th
GPT-6 Astra · OpenAI9th
DeepSeek V4 Pro · DeepSeek10th
Claude Sonnet 5 · Anthropic11th
Gemini 3.5 Flash-Lite · Google DeepMind12th
GPT-5.6 Luna · OpenAI13th
Claude Haiku 4.5 · Anthropic14th

The evidence

People's votes on questions in other languages

Tests this task · People compared two anonymous answers to questions asked in languages other than English. · Higher is better

Claude Opus 5.5 and Claude Fable 5.1 are neck and neck at the top, followed by Gemini 3.8 Flash and Gemini 3.1 Pro; Claude Fable 5.1 costs about 3 times as much.

Claude Opus 5.5 · Anthropic1st
Claude Fable 5.1 · Anthropic2nd
Gemini 3.8 Flash · Google DeepMind3rd
Gemini 3.1 Pro · Google DeepMind4th
Gemini 3.6 Flash · Google DeepMind5th
Kimi K3 · Moonshot AI6th
DeepSeek V4.1 Flash · DeepSeek7th
GPT-5.6 Sol · OpenAI8th
GPT-6 Astra · OpenAI9th
DeepSeek V4 Pro · DeepSeek10th
Claude Sonnet 5 · Anthropic11th
Gemini 3.5 Flash-Lite · Google DeepMind12th
GPT-5.6 Luna · OpenAI13th
Claude Haiku 4.5 · Anthropic14th
Source: LMArena · votes as of 25 Sept 2026

If you build with it

What the makers charge developers who use the models directly. Using an app? The plans above are what you pay.

Cost per 1,000 typical requests

List price, about 1,500 words in and 500 out per request · Lower is better

GPT-6 Luna is cheapest, followed by DeepSeek V4.1 Flash and GPT-5.6 Luna.

GPT-6 Luna · OpenAI$0.55
DeepSeek V4.1 Flash · DeepSeek$0.72
GPT-5.6 Luna · OpenAI$1.24
DeepSeek V4 Pro · DeepSeek$1.48
Gemini 3.5 Flash-Lite · Google DeepMind$2.35
Gemini 3.8 Flash · Google DeepMind$4.13
Gemini 3.6 Flash · Google DeepMind$4.13
Claude Haiku 4.5 · Anthropic$5.50
Claude Sonnet 5 · Anthropic$11
GPT-6 Sol · OpenAI$11
Gemini 3.1 Pro · Google DeepMind$12
Kimi K3 · Moonshot AI$17
GPT-5.6 Sol · OpenAI$22
Claude Opus 5.5 · Anthropic$22
GPT-6 Astra · OpenAI$55
Claude Fable 5.1 · Anthropic$55
Source: models.dev · MIT
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