# Arena AI launches Max router for cheaper, better agent tasks

> Max routes requests to the most suitable model, cutting cost by up to 55% while improving performance in chat, code and work tasks.

Oossa · 2026-10-13 · https://oossa.com/en/arena-ai-launches-max-router-for-cheaper-better-agent-tasks

Arena AI announced a new routing system called Max. The router decides which underlying model should handle each user request, based on how hard the task is and how much it will cost. In a live test Max topped the Agent Arena leaderboard with a 14.7% score boost and an average cost of $3.27 per task.

## How Max works

The system looks at more than 2.5 million real‑world sessions to learn each model’s strengths. For code work it sends 67 % of sessions to Astra (Medium). For chat it splits the load between Astra (Max) (49 %) and Fable 5.1 (Max) (42 %). For general work tasks the split is 49 % to Fable 5.1 (Max) and 43 % to Astra (Medium). By matching tasks to the right model, Max moves the performance‑cost “Pareto frontier” upward, meaning better results for the same or lower price.

## Early results and availability

In the same test Max beat the previous top public model, Fable 5.1 (Max), by 0.3 % while costing 37.5 % less. A prior experiment with Fable 5 and Kimi K3 showed a 10.7 % performance gain at a median cost of $1.06 per task, a 54 % saving. To celebrate the launch Arena AI is offering free access to the most capable Max variant (Fable 5.1 + Astra) in agent mode for a limited time. Users can also apply for API access via a signup form.

## The facts

- Max was announced on Oct 12 2026 (Mon Oct 12 2026 02:00:00 GMT+0200).
- The router was trained on over 2.5 million real‑world Agent Arena sessions.
- In live testing Max achieved a 14.7 % higher score than the previous leader.
- Median cost per task during the test was $3.27, 37.5 % lower than the prior top model.
- Routing distribution: 67 % of code sessions to Astra (Medium), 49 % of chat sessions to Astra (Max) and 42 % to Fable 5.1 (Max).

## Why it matters

For developers and businesses using AI agents, Max can lower the price of each task while keeping or improving quality. That means larger projects can stay within budget, and smaller teams can experiment with advanced AI without paying premium rates.

## Sources & references

1. [Introducing Max in Agent Arena](https://arena.ai/blog/max-router-tops-agent-arena) – LMArena, 2026-10-12

Last updated: 2026-10-13