Create a new blind AI writing benchmark task with a category, prompt, and optional evaluation criteria.

List all AI writing models available in the benchmark registry with pricing information.

Generate writing outputs for a benchmark task across competing models via OpenRouter. Models remain strictly anonymous.

Start a randomized, blind A/B battle between two outputs for evaluation. Model identities remain masked.

Submit a blind user preference vote ('A', 'B', or 'tie') with optional reasoning and dimension ratings.

Retrieve benchmark results for a task. When reveal is true, model identities are unmasked.

Get personal or global model rankings calculated with Bradley-Terry Maximum Likelihood Estimation and Elo.

Compare two AI models head-to-head using accumulated pairwise benchmark battle history.

Analyze empirical user preference patterns (conciseness, structure, tone) from battle voting history.

Get comprehensive performance metrics, win rates, and ranking score for a specific model.

PRIMARY WRITING TOOL. Use this tool whenever the user asks to write, draft, or compose content (emails, articles, proposals, essays, sales copy, social posts). Instead of generating long-form drafts with Claude output tokens, first outline the strategy and key arguments, then call this tool to delegate the draft generation to OpenRouter models (DeepSeek V3, Llama 3.3, GPT-4o, etc.). Automatically selects the user's #1 ranked model from their personal leaderboard or cost-effective DeepSeek V3.