What is OpenRouter Fusion?
OpenRouter's panel of models plus a judge for hard questions.
Who is OpenRouter Fusion best for?
OpenRouter Fusion is best for developers who want a cross-checked answer from several models on hard research questions.
Deep research questions
Several models research the same question with web search, and a judge lists where they agree, disagree and leave gaps before the final answer is written.
Near-frontier answers on a budget
In OpenRouter's own deep research test, a panel of cheaper models came within 1% of the top single model at half its cost.
Coding agents that need a second opinion
Added as a server tool, it lets your coding model call a panel only on hard calls such as architecture decisions, while routine work stays on one model.
Apps already on OpenRouter
Switching the model name to openrouter/fusion is enough to try it, and a no-code chatroom lets you build a panel without writing code.
How much does OpenRouter Fusion cost?
OpenRouter Fusion has no price of its own: each request is billed as the sum of its panel and judge model calls at list prices, roughly 4 to 5 times one completion with the default 3-model panel, paid from OpenRouter credits.
- 500+ models from 80+ providers
- Budgets, spend controls and prompt caching
- No minimum spend; email support
- EU and US in-region routing
- Up to 1,000 workspaces
- Upgrade in settings, no contract
- Lower platform fees and invoicing
- SSO/SAML and contractual SLAs
- Dedicated support team
Fusion adds no charge of its own: a request costs every panel completion plus one judge call, each at the model's list price, and cost rises in step with panel size (1 to 8 models). The platform fee is taken when you buy credits, never per request. OpenRouter's Free plan covers 25+ free models at 50 requests a day. With your own provider keys, Standard and Business include $25,000 of list-price inference a month with no fee, then 5%. Full pricing on openrouter.ai. We checked these prices on .
How do readers rate OpenRouter Fusion?
No one has rated OpenRouter Fusion yet. Be the first.
Sign in to rate. One rating per account.
What are the best OpenRouter Fusion alternatives?
One tool on Recaply does OpenRouter Fusion's job.
Questions about OpenRouter Fusion
What is OpenRouter Fusion?
OpenRouter's panel of models plus a judge for hard questions.
Who is OpenRouter Fusion for?
OpenRouter Fusion is best for developers who want a cross-checked answer from several models on hard research questions.
Is OpenRouter Fusion free?
No. OpenRouter Fusion is a paid tool.
What are the best OpenRouter Fusion alternatives?
The closest alternatives on Recaply are Sakana Fugu.
Where can I try OpenRouter Fusion?
On its official website, openrouter.ai.
How much does one OpenRouter Fusion request cost?
An OpenRouter Fusion request costs the sum of every panel model's completion plus the judge call, each at its list price. OpenRouter puts the default 3-model panel at roughly 4 to 5 times a single completion, and the cost grows with each model you add.
Is OpenRouter Fusion slower than a single model?
Yes, when it runs. A Fusion call often takes 2 to 3 times as long as a normal call because it waits for every panel model and then the judge. Called through the model name or the server tool, your model only brings in Fusion when it decides a prompt needs it.
Wikis.ai
Claude in Chrome
AI4Chat
ZeroClaw
BoltAI
Pulze.ai