Best AI for translation
As of 2026-07-18, Anthropic: Claude Opus 4.8 (Fast) is the strongest model for this task in our daily benchmark, where over 350 AI models are evaluated and the best are presented.
Translation is where the gap between models is widest for Scandinavian languages. A model can write excellent English and still produce stiff, English-flavoured Norwegian with the wrong word order and obvious anglicisms.
For translation we rank by how well the model actually lands in the target language. Ranked by language score, from today’s benchmark.
Today’s ranking
| Model | Provider | Score | Language | Speed | Input price/1M |
|---|---|---|---|---|---|
| Anthropic: Claude Opus 4.8 (Fast) | anthropic | 8.3/10 | 9.3/10 | 131 t/s | $10.00 |
| Anthropic: Claude Haiku 4.5 | anthropic | 8.0/10 | 9.3/10 | 113 t/s | $1.00 |
| Google: Gemma 3 4B | 8.0/10 | 9.3/10 | 237 t/s | $0.05 | |
| Cohere: Command R+ (08-2024) | cohere | 7.5/10 | 9.3/10 | 160 t/s | $2.50 |
| Perplexity: Sonar Pro | perplexity | 7.7/10 | 9.0/10 | 68 t/s | $3.00 |
| Meta: Llama 3.1 8B Instruct | meta-llama | 5.2/10 | 9.0/10 | 392 t/s | $0.05 |
| Mistral: Mistral Small 3 | mistralai | 7.8/10 | 8.7/10 | 234 t/s | $0.05 |
| IBM: Granite 4.0 Micro | ibm-granite | 5.4/10 | 8.3/10 | 179 t/s | $0.02 |
What separates a good translator from a bad one?
Weak models translate word by word. The result is grammatically correct but instantly recognisable as machine output: English sentence structure, wrong prepositions and phrases no native speaker would use. Strong models rewrite the sentence the way a native writer would, and hit the right register — formal in a letter, conversational in a chat.
When should you not use AI for translation?
Legal agreements, medical information and marketing copy intended for publication should be reviewed by a human. AI is excellent for first drafts, internal communication and understanding text in a language you do not read — but it can be confidently wrong, and the error is hard to spot precisely because the text reads well.
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