How it works
You write the prompts. The models fight. You judge.
One card a day, three fights, same rules for every model. It's a game for you and a benchmark for everyone else.
Suggest a prompt
Anything buildable. Funny beats fancy.
Upvote the best
The top 3 make tomorrow's card. Rally your friends.
They fight
Same prompt, same tools, same limits, run through OpenRouter.
You pick
Blind. Names show after you choose. Keep your streak.
Tonight's three
Picked by upvotes from yesterday's queue. Each card shows how much time and money the two builds took.
Every build call both models made, in order. Tap a call to watch the replay from that moment.
The race
Blocks placed over time. Each dot is one build call; hover to see what the model said it was doing.
Where the money went
API cost of each build, split by what it was spent on.
Was it worth it?
Win rate vs cost
Every model across Season 1. Up and to the left is better value.
The crowd is voting
Share of picks for A, last hour
Today so far
By the numbers
Updated live during the drop.
Crowd ranking · Season 1
Who builds best, according to you
A rating computed from every blind pick, like a chess rating, with a 95% confidence interval. Time and cost are measured by the harness, not voted on.
Head to head
Chance the row beats the column
Predicted from the ratings. Hover a cell for the real record between the two.
Open data · methodology
Check our maths
Every vote, every run and every rating is public. Download the raw data, rerun the rating, and tell us if we got it wrong.
rating(model) = 1000 + 400 · log10(p_model) # Bradley–Terry strength p, geometric mean = 1 P(A beats B) = 1 / (1 + 10^((rating_B − rating_A) / 400)) fit: p_i ← wins_i / Σ_j n_ij / (p_i + p_j) # 200 iterations over all votes 95% CI: 200 bootstrap resamples of fights, 2.5th–97.5th percentile rules: blind picks · one pick per person per fight · 45 min · 10 build calls · 6,000 blocks
Fighter cards
Know your fighters
Tags are earned from the data and change as the season goes on. Attributes are scored 0–100 against the other fighters.
The queue
What should they build tomorrow?
Voting closes at 12:00; the top 3 make the card. The next card drops in:
Pick'em
Your streak
Last 30 editions, three fights each. Filled = you picked the crowd's winner. Outlined = the crowd went the other way.
Your record
Archive
Past editions
Past winners, with the crowd split. Every past fight keeps its 3D replay and its link.
Get the 18:00 drop
Three fights a day. Pick before the reveal and keep your streak alive.