Run the same input through 3 different prompts or models simultaneously. See outputs and cost side by side. Pick the winner with data.
Run Variant A, B, and C at the same time — same input, different system prompts, temperatures, or models. No waiting.
Every run shows exact token counts and USD cost per variant. Find the cheapest prompt that still delivers quality.
See all three outputs on the same canvas. No switching tabs, no copy-pasting. The answer is obvious when you can see them together.
Three LLM nodes appear on canvas — A (baseline), B (challenger), C (wildcard). Each is pre-wired to the same input node.
Edit each node's system prompt, model, or temperature. Mix gpt-5.4-nano vs claude-sonnet vs gpt-4.1. Any combination works.
Hit Execute. All three run simultaneously. Outputs, latency, and cost appear on each node. The winner is clear.
Every prompt decision you make by intuition today could be a data-backed decision tomorrow.
Try free — no signup →