# Spline Arena (/generate/spline-arena)

> Vote blind on 3D scenes that AI models built in Spline from the same prompt, see the public rankings, and claim free AI credits.



**Spline Arena** is a public leaderboard for how well AI models build in 3D.
Two models get the same prompt and each builds a scene in Spline. You look at
both, vote for the better one, and every vote moves the Rankings.

<Video src="https://cdn.spline.design/_assets/_changelog/introducing-spline-arena.mp4" />

<Callout>
  Voting needs a free Spline account, on any plan. Reaching the day's vote goal
  lets you claim free **AI credits**.
</Callout>

***

## Where to find it [#where-to-find-it]

* **Dashboard:** choose **Spline Arena** in the sidebar.
* **New tab:** choose the **Spline Arena** card.
* **Desktop app:** Spline Arena opens in its own tab, so your other tabs stay
  where they are.
* **Browser:** go to [app.spline.design/arena](https://app.spline.design/arena).

The arena has two views, switched at the top: **Vote** and **Rankings**. For an
overview without signing in, see [spline.design/arena](https://spline.design/arena).

***

## Voting [#voting]

<Image src="https://cdn.spline.design/_assets/_changelog/introducing-spline-arena-poster.webp" alt="A battle in Spline Arena: the prompt at the top, scenes A and B side by side, and the four vote buttons under them" />

Each battle shows a prompt at the top and two finished scenes under it, **A**
and **B**. Both were built from that prompt by different AI models.

1. **Read the prompt.** Judge each scene by how well it matches it.
2. **Explore both scenes.** Drag to orbit, scroll to zoom and right-drag to pan.
   The details often decide it. Many scenes are interactive, so try clicking
   what the prompt says you can click.
3. **Vote** with one of the four buttons:
   * **A is better** or **B is better**: one scene matches the prompt better.
   * **Tie**: both are about as good.
   * **Both bad**: neither matches the prompt.

The models stay anonymous, so a model's name never sways your pick. Your vote
is recorded and the next battle loads straight away. To see how the models
compare, open **Rankings**.

***

## Rankings [#rankings]

<Image src="https://cdn.spline.design/_assets/_blog/introducing-spline-arena/rankings-board.webp" alt="An illustration of the Rankings: models ranked by score, with arrows for above and below average" />

**Rankings** lists every model competing, from Anthropic, OpenAI, Google, xAI
and others, ranked by every vote cast so far. The lineup changes as new models
ship.

* **The score** is how much more often a model wins a blind battle than the
  average model would, against the same field. A score of 7% means it wins 57%
  of the time where an average model wins 50%. Green is above average, red is
  below, and near zero is about average.
* **The bars** show each model's win rate. The dashed line is the average
  model's 50%, so a bar past it is above average.
* **Ties and "both bad"** count as half a win for each side.
* **Confidence intervals:** scores come from a Bradley–Terry model fitted to
  every head-to-head vote, and bootstrapping gives each one a range. When two
  models' ranges overlap, the call between them is close.

Below the list, a chart plots each model's score against its average cost per
scene (on a log scale), so you can see which models give the best results for
what they cost.

***

## Daily vote reward [#daily-vote-reward]

The ring in the arena's header counts your votes toward the day's goal. Once you
reach it:

1. Click the ring to open the reward.
2. Click **Claim AI credits**.

Claim them before the day resets. The reward shows the time in your time zone.
Sometimes the day's votes are reviewed before the credits are added; the reward
tells you when that's the case. Then come back the next day for more.

Credits you claim land in your account's AI credits. See
[AI credits](https://docs.spline.design/account/pricing.md#ai-credits) for what they're used for.

***

## Your votes [#your-votes]

Your votes feed the public Rankings and count toward your daily reward. They
may also be shared, de-identified, with AI research partners, to help models
get better at building 3D.

***

## FAQ [#faq]

<Accordions>
  <Accordion title="Do I need an account to vote?">
    Yes, a free Spline account. It lets us monitor voting, and lets you claim
    free AI credits.
  </Accordion>

  <Accordion title="Which models are in the arena?">
    Models from Anthropic, OpenAI, Google, xAI and others. The lineup changes as
    new models ship, and **Rankings** lists every one competing.
  </Accordion>

  <Accordion title="Can I see which model built a scene?">
    No. Battles stay anonymous, before and after you vote, so the pick is about
    the scene, not the name. **Rankings** shows how each model does across every
    vote.
  </Accordion>

  <Accordion title="Why is Spline running Spline Arena?">
    To find out which models build 3D well and where they still fall short, and
    to help them improve, so you get better results in Spline, faster.
  </Accordion>
</Accordions>