Is Fusion available on FastMetal?

Not at the moment. random-free, from the same lab, is available on the FastMetal API today.

What is the context window of Fusion?

1,000,000 tokens, shared between the prompt and the response.

How does Fusion rank?

#77 on the public arena's Overall board (ELO 938). Ranks move as the leaderboard is updated.

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openrouter/fusion

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Fusion

Fusion turns your prompt into a small multi-model deliberation. A panel of expert models (see below) analyzes your prompt in parallel with web search and web fetch enabled, then a...

6/13/2026

1,000,000 tokens

#77 Text to Image (Overall)

Specifications

Modalities

Input

text

Output

text

Frequently asked questions

Is Fusion available on FastMetal?: Not at the moment. random-free, from the same lab, is available on the FastMetal API today.
What is the context window of Fusion?: 1,000,000 tokens, shared between the prompt and the response.
How does Fusion rank?: #77 on the public arena's Overall board (ELO 938). Ranks move as the leaderboard is updated.

Leaderboard

Text to Image

OverallELO: 938

#77

Models you can use on FastMetal