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Rapid Router
Model guide

The best AI model
for each kind of work.

Ranked on LMArena's blind votes, for models live on Rapid Router today, with the price you would pay.

For codingRanked on LMArena's coding board, where developers compare two anonymous models on the same programming prompt and vote for the better answer. A higher rating means the model wins more of those head-to-heads.For web developmentRanked on LMArena's WebDev board, where each model builds a working web page from the same prompt and people vote on the result. It rewards models that produce code that runs and looks right, not just code that reads well.For complex reasoningRanked on LMArena's hard prompts board: the subset of real user prompts judged most demanding, with several constraints, specialist knowledge or long chains of logic.For mathRanked on LMArena's math board, built from the maths questions people actually ask, from school algebra to proofs. Benchmark scores such as MATH Level 5 and AIME appear on each model's page.For writingRanked on LMArena's creative writing board: stories, emails, scripts and copy, judged by people choosing the answer they would rather read.For following instructionsRanked on LMArena's instruction following board: prompts with explicit formats, lengths and rules, where the better model is the one that obeys all of them.For images and visionRanked on LMArena's vision board, where people upload an image, ask a question about it and vote between two models' answers. Only models that accept image input are listed.For chat and assistantsRanked on LMArena's overall board, the broadest signal there is: millions of votes across every kind of everyday question.For long documentsRanked by context window, the amount of text a model reads in one request, with its overall LMArena rating alongside so a big window is not mistaken for a good model.Best cheap AI modelThe cheapest models that still rate in the top 40% of LMArena's overall board, sorted by price. Good enough for most work at a fraction of a flagship's cost.