Best AI for email

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.

Email is what most people use AI for at work. The requirement is simple but strict: the text has to sound like you, not like a press release.

For email we rank by language quality, because tone is what decides whether the draft can actually be sent. Ranked by language score, from today’s benchmark.

Top choice

Anthropic: Claude Opus 4.8 (Fast)

anthropic

Score: 8.3/10

Language: 9.3/10

Speed: 131 t/s

$10.00

Runner-up

Anthropic: Claude Haiku 4.5

anthropic

Score: 8.0/10

Language: 9.3/10

Speed: 113 t/s

$1.00

Third choice

Google: Gemma 3 4B

google

Score: 8.0/10

Language: 9.3/10

Speed: 237 t/s

$0.05

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	google	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

How to get email that does not sound AI-generated

The most common mistake is asking for “a professional email”. That gets you clichés. Give the model the raw material as bullet points, say who the recipient is, and ask for a specific length and tone: “three paragraphs, direct, slightly informal”. Pasting in an email you wrote yourself as a style example works even better.

What not to paste in

Customer data, personal information, contract details and internal figures should not go into a free service without a data processing agreement. Rewrite them as anonymised notes, or use a tool your employer has approved.

hvilkenAI is independent. We have no affiliate agreements, sponsored placements or commercial ties to the AI providers we test. Every recommendation rests on test results alone.

Frequently asked questions

Which AI is best at writing email in Norwegian?

The ranking on this page updates daily from our benchmark, where over 350 models are evaluated and the strongest on the language are presented.

Can AI answer email automatically?

Technically yes, but it is rarely advisable. Use AI to draft something you read and send yourself — automatic replies without review produce mistakes you only notice once the recipient does.

How do I make the AI write in my tone?

Give it two or three emails you have written yourself and ask it to imitate the style. That works far better than describing the tone in words.

Is it acceptable to use AI for work email?

Yes, as long as you review before sending and do not paste sensitive information into services your employer has not approved.