AnthropicMODEL A
Claude Haiku 5.5
A fresh perspective awaits.
Run an enabled comparison to see an official model response.
—billable output tokens—input tokens—first token
Cost confirmed at settlement
THE MODEL ARENA
Explore mock UI demo One prompt. Two perspectives.
Official models via OpenRouter. Independent answers. Credits based on verified OpenRouter charges.
MODEL A
MODEL B
Ready
OpenAIMODEL B
GPT-5.4 nano
A fresh perspective awaits.
Run an enabled comparison to see an official model response.
—billable output tokens—input tokens—first token
Cost confirmed at settlement
A failed or stopped response can still have billable usage. Credits are rounded once for the complete comparison, after both costs are confirmed.