#1
Claude Opus 4.6
Anthropic
Edges the current instruction-following Arena by displayed score.
Arena score1514±5
- constraint following quality
- structured prompt handling
The model that wins your task, wired into your business.
No single model wins everything. Today the leader in code is not the leader in voice, the best model for documents loses on images, and half of these positions move within a month. That is what the board below is for: the top 3 for each of 26 tasks, rebuilt every 10 days from public leaderboards and independent tests.
Then I build the thing that uses it. Agents that handle support, pipelines that read invoices and contracts, voice that answers the phone, bots that qualify leads while you sleep. It plugs into what you already run — CRM, spreadsheets, Telegram, your own API — and every step calls the model that wins that particular step, whichever provider it belongs to.
Write me on Telegram — @simvimTell me which process eats your week. I answer myself.
Instruction following
Instruction following
For prompts with detailed constraints and required formats.
First and second are practically tied within the reported intervals.
#2
Claude Fable 5
Anthropic
Scores effectively level with first place on constrained prompts.
Arena score1512±7
- complex constraint handling
- strong prompt adherence
#3
Claude Opus 4.7
Anthropic
Maintains a high preference score on detailed instructions.
Arena score1503±6
- detailed prompt handling
- format constraint adherence
How the ranking is built
There is no single “best AI model” here. Every task is judged on its own: public leaderboards, independent tests and official model data, weighed together rather than copied from one board. The whole thing is re-checked every 10 days. Two modes of the same base model never take two places in one top 3. Likes are a separate reader signal — they never move the ranking.