Ranking method updated Oct 24, 2026. Claude Opus 5.5 leads on the current signal.
Leads the writing-specific board, with a natural voice that avoids generic AI phrasing. These picks are readable without an account, and the details behind each one are on the card.
Pro is $20/month, or $17/month billed yearly. API is $4 per million input tokens and $20 per million output.
Free tier
Not on the free plan. Opus needs Pro or Max.
Privacy default
Anthropic says Free, Pro, and Max chats are used for training only if you allow it, and you choose at signup. The toggle has been reported as on by default, so check it. Settings, then Privacy. Turn off Help improve Claude. Source
When not to use it
Skip it for high-volume captions. A faster model is enough and much cheaper.
Starter prompt
Rewrite this email so it is shorter, warmer, and still says the same thing.
Google AI Pro is $19.99/month. API is $2/M input and $10/M output tokens until Nov 30, 2026, then $4/$20.
Free tier
Not on the free plan. The free Gemini app keeps Flash-Lite, not Argon.
Privacy default
Yes for adults. Gemini Apps Activity is on by default, and those chats can be used to improve Google AI. Gemini Apps Activity, turn off Keep Activity. Safety review can still apply. Source
When not to use it
Skip it when the draft must sound like you. It still needs your edit and facts.
Starter prompt
Write a LinkedIn post about this launch in a plain, specific voice. No hype.
LMArena Creative Writing not cited. Highest-rated open model on the Artificial Analysis Intelligence Index (46). Source.
Cost
Weights are free under MIT. API is about $0.44 per million input tokens and $0.87 per million output.
Free tier
The weights are free to download. Hosted use depends on Xiaomi's current studio limits.
Privacy default
No, if you download the weights and run them yourself. Hosted Xiaomi apps may differ. Run the open weights on your own machine when chats must stay private. Source
When not to use it
Skip a hosted demo if the draft includes unreleased product details.
Starter prompt
Draft three headline options and one short paragraph for this announcement.
Email
One email when a leader changes. Buttondown is the only service that holds the address, and it uses it only to send these alerts. Open and click tracking stay off. Privacy
Coming soon.
Leader history
Oct 24, 2026. Ranking method updated. Claude Opus 5.5 leads on the new signal. Writing now ranks on LMArena Creative Writing instead of the general text board. Claude Opus 5.5 leads that board (1520).
Oct 23, 2026. Gemini 4 Argon is the first leader on record. LMArena Text overall 1517
A new number one has to show up on two daily checks before it replaces the current leader. Get alerts.
Source: WhichAI.today, Writing leader as of Oct 24, 2026, whichai.today/writing
Questions
Which AI is best for writing & marketing right now?
Claude Opus 5.5 from Anthropic leads, as of Oct 24, 2026. Leads the writing-specific board, with a natural voice that avoids generic AI phrasing. The alternative is Gemini 4 Argon, and the open-weights pick is MiMo-V2.6-Pro.
Where do I get Claude Opus 5.5?
Claude app, Pro plan ($20/month), choose Opus 5.5. Pro is $20/month, or $17/month billed yearly. API is $4 per million input tokens and $20 per million output.
Has this leader changed?
Ranking method updated on Oct 24, 2026. Writing now ranks on LMArena Creative Writing instead of the general text board. Claude Opus 5.5 leads that board (1520).